829 research outputs found
Gastroserica Ahrens, Liu, Lukic & Bai, 2023, new subgenus
No full text<i>Gastroserica</i> (sbg.) <i>Helioserica</i> Ahrens, Lukic & Liu, new subgenus <p> <b>Type species of the new subgenus:</b> <i>Microserica varians</i> Moser, 1915 (by current designation).</p> <p> <b>Diagnosis.</b> The new subgenus differs from its sister clade (Fig. 1), <i>Gastroserica</i> sensu stricto, by the well-produced and distinctly angled anterior angles of pronotum, as well as by the distinctly emarginated anterior margin of labroclypeus. Furthermore, the apical abdomen is not as robustly developed as in most <i>Gastroserica</i> sensu stricto species, with the pygidium barely protruding under the apex of elytra.</p> <p> <b>Remarks.</b> Given, of being the sister lineage of <i>Gastroserica</i> (Fig. 1; see also Eberle <i>et al.</i> 2017), and thus representing a monophyletic group with the species of <i>Gastroserica</i> sensu stricto, we nevertheless decided to erect a new and separate subgenus for these species, since key diagnostic features of <i>Gastroserica</i> sensu stricto are not present among these species, namely the obsolete anterior angles of pronotum and the straight, non-emarginate anterior margin of labroclypeus.</p> <p> All species so far classified as <i>Gastroserica</i> (Ahrens & Bezděk 2016) are subsequently assigned to the subgenus <i>Gastroserica</i> Brenske, 1897.</p> <p> <b>Etymology.</b> The name of the new subgenus is composed of the Greek word “ <i>helios</i> ” (sun) and the word root <i>Serica</i> (type genus of the tribe Sericini), with reference to the diurnal activity of the species of this subgenus.</p> <p> <b> Key to the species of the <i>Gastroserica</i> (<i>Helioserica</i> new subgenus) (♁♁):</b> </p> <p>1 Dorsal surface mostly dull or iridescent.................................................................... 2</p> <p>- Dorsal surface completely simply shiny................................................................... 14</p> <p> 2 Elytra with multiple dark spots and darker striae.......................................... <b> <i>G. cognata</i> (Frey, 1972)</b> </p> <p>- Elytra without multiple dark spots and striae of the same colour as intervals....................................... 3</p> <p>3 Left paramere with a distinct basal lobe.................................................................... 4</p> <p> - Left paramere without a distinct basal lobe............................................. <b> <i>G. quateorum</i> (Frey, 1972)</b> </p> <p> 4 Left distal portion of phallobase strongly widened (lateral view)............................ <b> <i>G. hiulca</i> (Brenske, 1897)</b> </p> <p>- Distal portion of phallobase at both sides narrowed towards apex (lateral view)..................................... 5</p> <p>5 Left paramere bilobed in distal part....................................................................... 6</p> <p>- Left paramere simple in distal part (with just one lobe or branch)............................................... 8</p> <p>6 Phallobase with a ventral lamellose extension on the left side.................................................. 7</p> <p> - Phallobase without a ventral lamellose extension on the left side......................... <b> <i>G. bisignata</i> (Nomura, 1974)</b> </p> <p> 7 Left paramere robust, as wide as apical phallobase. Both distal lobes of left paramere subequal in length to the right paramere.................................................................... <b> <i>G. nitidipyga</i> (Nomura, 1974)</b> </p> <p> - Left paramere narrower, distinctly more narrow than apical phallobase. External distal lobes of left paramere half of length to the right paramere............................................. <b> <i>G. yuebaensis</i> Ahrens, Lukic & Liu, new species</b> </p> <p>8 Right side of apical phallobase with a small granulate raster area................................................ 9</p> <p>- Right side of apical phallobase without a granulate raster area................................................. 10</p> <p> 9 Left paramere basally wider (lateral view). Right paramere before apex almost straight............................................................................................. <b> <i>G. fumaria</i> Ahrens, Lukic & Liu, new species</b> </p> <p> - Left paramere basally more narrow (lateral view). Right paramere before apex strongly bent externally............................................................................ <b> <i>G. phukradung</i> Ahrens, Lukic & Liu, new species</b> </p> <p>10 Right paramere in basal two thirds strongly widened........................................................ 11</p> <p> - Right paramere in basal half not particularly widened..................................... <b> <i>G. varians</i> (Moser, 1915)</b> </p> <p>11 Left paramere ventrally strongly excavated and bent......................................................... 12</p> <p> - Left paramere ventrally not excavated and straight........................... <b> <i>G. roingensis</i> (Fabrizi & Ahrens, 2016)</b> </p> <p>12 Right paramere at apex strongly bent externally (dorsal view).................................................. 13</p> <p> - Right paramere at apex weakly bent externally (dorsal view)..................... <b> <i>G. dohertyi</i> (Ahrens & Fabrizi, 2009)</b> </p> <p> 13 Elytra colour yellow to dark brown. Basal lobe of left paramere short.......................... <b> <i>G. fukiensis</i> Frey, 1972</b> </p> <p> - Elytra colour blackish, pronotum reddish. Basal lobe of left paramere long..................................................................................................... <b> <i>G. simaoensis</i> Ahrens, Lukic & Liu, new species</b> </p> <p>14 Phallobase ventrally with prominent lateral elevations....................................................... 15</p> <p>- Phallobase ventrally without prominent lateral elevations..................................................... 19</p> <p>15 Prominent lateral elevations of phallobase at apex.......................................................... 16</p> <p>- Prominent lateral elevations of phallobase at middle......................................................... 17</p> <p> 16 Right paramere more than half as long as phallobase. Eyes moderately large, ratio diameter/interocular width: 0.64................................................................. <b> <i>G. piceocoerulea</i> Ahrens, Lukic & Liu, new species</b> </p> <p> - Right paramere less than half as long as phallobase. Eyes very large, ratio diameter/interocular width: 0.93.................................................................................. <b> <i>G. loei</i> Ahrens, Lukic & Liu, new species</b> </p> <p>17 Left paramere with a distinct and subequal ventral and dorsal/basal lobe......................................... 18</p> <p> - Left paramere without a ventral and dorsal/basal lobe, the latter basally reduced in length and developed short and medially........................................................................ <b> <i>G. lucens</i> (Ahrens & Fabrizi, 2009)</b> </p> <p> 18 Dorsal/basal lobe shorter than the ventral one, sharply pointed, simple......... <b> <i>G. ivoi</i> Ahrens, Lukic & Liu, new species</b> </p> <p> - Dorsal/basal lobe as long as the ventral one, rounded at apex, tubuliform with a membranous opening at median apex.............................................................. <b> <i>G. lucidomarginalis</i> Ahrens, Lukic & Liu, new species</b> </p> <p> 19 Left paramere with a distinct and subequal ventral and dorsal lobe....... <b> <i>G. rubropicea</i> Ahrens, Lukic & Liu, new species</b> </p> <p> - Left paramere without a ventral and dorsal lobe, the latter basally reduced in length and developed short and medially.................................................................... <b> <i>G. bannok</i> Ahrens, Lukic & Liu, new species</b> </p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on pages 9-10, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
Gastroserica loei Ahrens, Lukic, new species
No full text<i>Gastroserica loei</i> Ahrens, Lukic & Liu, new species <p>Figs. 6J–M, 24</p> <p> <b>Type material examined.</b> Holotype: Ô “Phu Rua NP (900m alt.), Loei P., NE Thai. 26-30.IV.2006 Takakuwa, M. leg. / 1162 Sericini Asia spec.” (ZFMK). Paratypes: 1 Ô, 3 ♀♀ “Phu Rua NP (900m alt.), Loei P., NE Thai. 26- 30.IV.2006 Takakuwa, M. leg.” (ZFMK).</p> <p> <b>Description of holotype.</b> Length: 4.9 mm, length of elytra: 3.2 mm, width: 2.9 mm. Body oval, yellowish brown, antennal club, frons and margins of elytra blackish, dorsal surface shiny, nearly glabrous.</p> <p>Labroclypeus narrow and almost square, as wide as long, widest at middle, lateral margins convex and weakly convergent to rounded anterior angles; anterior margin moderately emarginated medially, margins weakly reflexed; lateral margins and ocular canthus produce a blunt angle; surface flat, finely and densely punctate, with numerous long, erect setae; frontoclypeal suture finely incised and curved medially. Frons shiny, with dense, fine punctures, beside eyes with a few long setae, otherwise glabrous. Smooth area in front of eyes twice as wide as long. Ocular canthus sparsely finely punctate, narrow and moderately long (1/3 of ocular width), with a terminal seta. Eyes very large, ratio of diameter/interocular width: 0.93. Antenna with ten antennomeres; club composed of four antennomeres, reflexed, 2.2 times as long as remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.</p> <p>Pronotum wide, widest at middle, lateral margins evenly convex and convergent to rectangular and moderately produced and almost blunt anterior angles and blunt posterior angles. Anterior margin of pronotum convex, with robust and complete marginal line; basal marginal line absent; surface finely and densely punctate, glabrous; anterior and lateral anterior margins sparsely setose. Hypomeron carinate, weakly produced ventrally. Scutellum triangular, coarsely and densely punctate, on median base impunctate.</p> <p>Elytra short, widest at middle, striae finely impressed, finely and densely punctate, intervals weakly convex, with fine and sparse punctures concentrated along striae, almost entirely glabrous; epipleural edge robust, ending at slightly rounded external apical angle of elytra, epipleura densely setose, apical border chitinous, without a fringe of short microtrichomes (visible at ca 100x magnification).</p> <p>Ventral surface shiny, finely and densely punctate, metasternum sparsely covered with fine, short, or very minute setae; metacoxa glabrous, with a few single setae laterally. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.77. Abdominal sternites finely punctate, with a transverse row of coarse punctures, each bearing a robust seta. Pygidium weakly convex and shiny, with fine and moderately dense punctures, without smooth midline, with numerous short setae and a few longer on apical part.</p> <p>Legs moderately wide; femora finely and sparsely punctate, with two longitudinal rows of longer setae. Metafemur moderately shiny, anterior margin acute, without submarginal serrated line; anterior row of seta-bearing punctures present; ventral posterior margin finely serrate at apex, only weakly widened in apical half, dorsal posterior margin serrate, with a few short setae basally. Metatibia moderately long and wide, widest at middle, ratio width/ length:1/3.1; dorsal margin sharply carinate, with two groups of spines, basal group at one third, apical one at two thirds of metatibial length, in basal third with a few robust single setae; lateral face longitudinally convex, finely and sparsely punctate, along midline smooth, glabrous; ventral margin finely serrate, with three robust equidistant setae; medial face smooth, apex interiorly near tarsal articulation sharply truncate. Tarsomeres with fine, sparse setae ventrally, neither laterally nor dorsally carinate, dorsally impunctate; metatarsomeres in holotype missing. Protibia short, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.</p> <p>Aedeagus: Fig. 6J–L. Habitus: Fig. 6M.</p> <p> <b>Diagnosis.</b> <i>Gastroserica loei</i> Ahrens, Lukic & Liu, new species is in external appearance and shape of aedeagus similar to <i>Gastroserica lucidomarginalis</i> Ahrens, Lukic & Liu, new species and <i>G.</i> <i>ivoi</i> Ahrens, Lukic & Liu, new species <i>Gastroserica loei</i> differs by the very large eyes, the long antennal club, and the (in relation to the phallobase) rather short parameres, while the characteristics of the phallobase are more similar to <i>G. piceocoerulea</i> Ahrens, Lukic & Liu, new species.</p> <p> <b>Etymology.</b> The name of the new species is named after its occurrence in Loei province (noun in apposition).</p> <p> <b>Variation.</b> Length: 4.5–5.4 mm, length of elytra: 3.1–3.8 mm, width: 2.6–3.4 mm. Metatarsomeres glabrous, with a strongly serrated ridge ventrally and a parallel subventral smooth carina immediately beside it; first metatarsomere little shorter than following two tarsomeres combined and twice as long as dorsal tibial spur. Female: antennal club short, composed of three antennomeres, little shorter than remaining antennomeres combined; eyes little smaller than in male, ratio of diameter/interocular width: 0.6.</p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on pages 23-24, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
Microserica namnao Ahrens, Lukic, new species
No full text<i>Microserica namnao</i> Ahrens, Lukic & Liu, new species <p>Figs 18 E-H, 29</p> <p> <b>Type material examined.</b> Holotype: Ô “X-DA5510 / X-DA5510 Thailand Phetchabun Nam Nao NP Hill evergreen forest 16°44.371’N, 101°34.549’E 834m leg. T2429 Leng Jantteab Malaise trap 26.v.-2.vi.2007 Microserica sp. TigerThai09 / 1171 Sericini Asia spec.” (QSBG).</p> <p> <b>Description of holotype.</b> Length: 5.3 mm, length of elytra: 3.5 mm, width: 3.2 mm. Body oval, dark brown, head and pronotum with some greenish shine, antenna yellow, dorsal and ventral surface dull but with iridescent shine; dorsal surface glabrous.</p> <p>Labroclypeus trapezoidal,distinctly wider than long,widest at base, lateral margins weakly convex and convergent to strongly rounded anterior angles; anterior margin weakly emarginate medially, margins weakly reflexed; lateral margins and ocular canthus produce an indistinct blunt angle; surface shiny, weakly convex medially, coarsely and densely punctate, with a few short erect setae; frontoclypeal fine, weakly curved. Frons dull, with dense, fine punctures; with a few single setae beside eyes, otherwise glabrous. Smooth area in front of eyes flat, 1.5 times as wide as long. Ocular canthus wide and short (1/3 of ocular width), its external margin straight, impunctate, with a terminal seta. Eyes small, ratio of diameter/interocular width: 0.53. Antenna with ten antennomeres; club composed of four antennomeres, straight, 1.2 times as long as remaining antennomeres combined, all lamella of club equal in length. Mentum elevated and slightly flattened anteriorly.</p> <p>Pronotum wide, widest at base, lateral margins moderately convex and convergent to sharp, distinctly produced anterior angles, posterior angles blunt. Anterior margin of pronotum weakly convex, with fine, complete marginal line; basal marginal line absent; surface finely and densely punctate, with minute setae in punctures, lateral anterior margin and lateral margin sparsely setose. Hypomeron weakly carinate, not produced ventrally, not grooved. Scutellum small and triangular, finely and densely punctate, smooth along midline.</p> <p>Elytra oval, widest at middle, striae distinctly impressed, finely and densely punctate, intervals convex, with fine and dense punctures only concentrated along striae, along middle almost impunctate, with minute setae in punctures, odd intervals with a few single, short white, adpressed setae; epipleural edge fine, ending convex external apical angle of elytra, epipleura densely setose; apical border membraneous, with a fine fringe of short microtrichomes (visible at ca 100x magnification).</p> <p>Ventral surface dull, finely and densely punctate, metasternum on disc with long erect setae, otherwise sparsely covered with fine, short, or very minute setae; metacoxa glabrous, with a few single setae laterally. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.88. Abdominal sternites finely punctate, with a transverse row of coarse punctures, each bearing a large, robust seta. Pygidium weakly convex and dull, with fine, dense punctures, without smooth midline, with a few long setae along apical margin, otherwise glabrous.</p> <p>Legs moderately wide and long; femora finely and sparsely punctate, with two longitudinal rows of longer setae. Metafemur shiny, anterior margin acute, without submarginal serrated line; anterior row of seta-bearing punctures reduced; ventral posterior margin distinctly widened in apical half and entirely smooth, dorsal posterior margin also smooth, with a few short setae basally. Metatibia short and wide, widest at middle but only weakly narrowed towards apex, ratio width/length: 1/3.3; dorsal margin carinate, with two groups of spines, basal group at anterior third, apical one at three quarters of metatibial length, in basal third with a few fine, single setae; lateral face longitudinally convex, finely and sparsely punctate on dorsal and basal portion, glabrous; ventral margin finely serrate, with four equidistant setae; medial face smooth and glabrous, apex interiorly near tarsal articulation bluntly truncate. Tarsomeres with fine, sparse setae ventrally, neither laterally nor dorsally carinate, dorsally smooth; metatarsomeres ventrally glabrous, with a strongly serrated ridge ventrally, but without parallel subventral smooth carina; first metatarsomere little shorter than following two tarsomeres combined, little longer than dorsal tibial spur. Protibia short, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.</p> <p>Aedeagus: Fig. 18E–G Habitus: Fig. 18H. Female unknown.</p> <p> <b>Diagnosis.</b> <i>Microserica namnao</i> Ahrens, Lukic & Liu, new species is very similar to <i>Mic. viengvai</i> Ahrens, Lukic & Liu, new species. <i>Microserica namnao</i> Ahrens, Lukic & Liu, new species differs by the more triangular left paramere (lateral view), and the apically less narrowed right one (lateral view) which is broudly rounded at apex.</p> <p> <b>Etymology.</b> The species name is derived from the name of its type locality, Nam Nao (noun in apposition).</p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on pages 51-52, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
Oxyserica schawalleri Ahrens & Liu & Lukic & Bai 2023, new combination
No full text<i>Oxyserica schawalleri</i> (Ahrens, 1998) new combination <p> <i>Microserica schawalleri</i> Ahrens, 1998 a: 43; Ahrens 2004b: 182.</p> <p> <b>Material examined.</b> See Ahrens (1998 a: p. 43; 2004b: p. 182).</p> <p> <b>Aedeagus.</b> See Ahrens (1998 a: p. 44, figs 34–36).</p> <p> <b>Distribution.</b> Western central Nepal.</p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on page 74, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
Moronoserica tenasserimensis Ahrens & Liu & Lukic & Bai 2023, new combination
No full text<i>Moronoserica tenasserimensis</i> (Bohacz & Ahrens, 2020) new combination <p> <i>Microserica tenasserimensis</i> Bohacz & Ahrens, 2020: 271.</p> <p> <b>Material examined.</b> See Bohacz & Ahrens (2020: p. 271).</p> <p> <b>Aedeagus.</b> See Bohacz & Ahrens (2020: p. 269, Fig. 3I–L).</p> <p> <b>Distribution.</b> Myanmar (Tenasserim).</p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on page 62, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
Microserica caiyangheana Ahrens, Lukic, new species
No full text<i>Microserica caiyangheana</i> Ahrens, Lukic & Liu, new species <p>Figs. 13I–L, 28</p> <p> <b>Type material examined.</b> Holotype Ô [China] “ Luoluoxinzhaishan Mountains, Caiyanghe River, Simao, Yunnan,</p> <p>21.V.2000, 1500m, Bu Wenjun leg. / LW-374” (NKU). Paratypes: 1 Ô [China] “ Menghun, Xishuangbanna, Yunnan, 23.V.1958, 1200-1400m, leg. Meng Xuwu ” (IZAS), 1 ♀ [China] “ Meng’e, Xishuangbanna, Yunnan, 23.V.1958, 1050-1080m, leg. Zhang Yiran ” (IZAS).</p> <p> <b>Description of holotype.</b> Length: 5.4 mm, length of elytra: 4.9 mm, width: 3.2 mm. Body oval, body yellowish brown, lateral intervals, frons, two large, pairs of spots on pronotum, and multiple dots on elytra brown, dorsal surface dull and nearly glabrous.</p> <p>Labroclypeus trapezoidal, wider than long, widest at base, lateral margins almost straight and convergent to moderately rounded anterior angles; anterior margin weakly emarginate medially, margins weakly reflexed; lateral margins and ocular canthus produce an indistinct, blunt angle; surface shiny, medially weakly convex, finely and coarsely, densely punctate, with a few long, erect setae anteriorly in transversal row; frontoclypeal suture finely incised and bent medially. Frons dull, with dense, fine punctures, beside eyes with a few single short setae, otherwise glabrous. Smooth area in front of eyes twice as wide as long. Ocular canthus impunctate, narrow and short (1/4 of ocular width), without a terminal seta. Eyes moderately large, ratio of diameter/interocular width: 0.69. Antenna with ten antennomeres; club composed of four antennomeres, strongly reflexed, twice as long as remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.</p> <p>Pronotum wide, widest at base, lateral margins weakly evenly convex and convergent to distinctly produced and sharp anterior angles, posterior angles strongly rounded.Anterior margin of pronotum convex, with fine and complete marginal line; basal marginal line absent; surface finely and densely punctate, with minute setae in punctures, anterior and lateral anterior margins sparsely setose. Hypomeron indistinctly carinate, carina not produced ventrally. Scutellum triangular, finely and densely punctate, on midline impunctate.</p> <p>Elytra short oval, widest at middle, striae distinctly impressed, finely and densely punctate, intervals convex, with fine and sparse punctures concentrated along striae, with very minute setae in punctures, odd lateral intervals with a few short setae; with two incomplete bands of spots on elytra, one anterior with spots on interval 2, 4, and 6, and one posterior behind the middle on intervals 2 to 6; epipleural edge robust, ending at slightly rounded external apical angle of elytra, epipleura densely setose; apical border chitinous, without a fringe of short microtrichomes (visible at ca 100x magnification).</p> <p>Ventral surface dull, finely and densely punctate, metasternum sparsely covered with fine, short, or very minute setae; metacoxa glabrous, laterally with numerous long, yellow, and robust setae. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.62. Abdominal sternites finely punctate, with a transverse row of coarse punctures, each bearing a robust seta. Pygidium moderately convex and dull, with mixed finer and larger punctures, without smooth midline, with minute setae in punctures and numerous short setae along apical margin.</p> <p>Legs moderately wide; femora finely and sparsely punctate, with two longitudinal rows of longer setae. Metafemur moderately shiny, anterior margin acute, without submarginal serrated line; anterior row of seta-bearing punctures present; ventral posterior margin weakly widened in apical half, smooth, dorsal posterior margin also smooth, with a few short setae basally. Metatibia moderately long and wide, widest at middle, ratio width/length: 1/3.22; dorsal margin longitudinally convex, with two groups of spines, basal group at first third, apical one at three quarter of metatibial length, basally almost glabrous; lateral face strongly longitudinally convex, finely and sparsely punctate, partly with minute setae in punctures; ventral margin carinate and finely serrate, with three robust equidistant setae; medial face smooth, apex interiorly near tarsal articulation sharply truncate. Tarsomeres with fine, sparse setae ventrally, neither laterally nor dorsally carinate, dorsally smooth; metatarsomeres glabrous, with a strongly serrated ridge ventrally and a parallel subventral smooth carina immediately beside it; first metatarsomere as long as following two tarsomeres combined, almost twice as long as dorsal tibial spur. Protibia short, bidentate; anterior tarsi missing in holotype.</p> <p>Aedeagus: Fig. 13I–K. Habitus: Fig. 13L.</p> <p> <b>Diagnosis.</b> <i>Microserica caiyangheana</i> Ahrens, Lukic & Liu, new species is in external appearance and morphology of aedeagus very similar to <i>Mic. avicula</i> (Arrow, 1946) and <i>Mic. paravicula</i> Ahrens, Lukic & Liu, new species. <i>Microserica caiyangheana</i> Ahrens, Lukic & Liu, new species differs by much longer antennal club, the continuous posterior band of spot on the elytra and the shape of the aedeagus: the dorsal phallobasal apophysis is absent; the dorsal lobe of the right paramere is weakly sclerotized and short; the left paramere is strongly curved ventrally.</p> <p> <b>Etymology.</b> The species name, <i>caiyangheana,</i> is derived from the type locality, Caiyanghe River (adjective in nominative singular case).</p> <p> <b>Variation.</b> Length: 5.4–5.6 mm, length of elytra: 4.9–5.0 mm, width: 3.2–3.3 mm. Female: antennal club short, little shorter than remaining antennomeres combined, composed of three antennomeres; pygidium flat.</p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on pages 39-41, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
Gastroserica dohertyi Ahrens & Liu & Lukic & Bai 2023, new combination
No full text<i>Gastroserica dohertyi</i> (Ahrens & Fabrizi, 2009) new combination <p>Fig. 24</p> <p> <i>Microserica dohertyi</i> Ahrens & Fabrizi, 2009b: 268.</p> <p> <b>Material examined.</b> See Ahrens & Fabrizi (2009b: 268).</p> <p> <b>Aedeagus.</b> See Ahrens & Fabrizi (2009b: p. 282, fig. 6G–I).</p> <p> <b>Distribution.</b> India (Assam /Patkai Mts).</p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on page 18, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
Microserica parasimplex Ahrens, Lukic & Liu 2023
No full text<i>Microserica parasimplex</i> Ahrens, Lukic & Liu, 2023 <p> <b>Material examined.</b> 1 ♂ “ LAOS: Sayannakhet Prov. Sayannakhet 15.IV.1967 / Native Collector BIHSOP MUSEUM” (BPBM).</p>Published as part of <i>Ahrens, Dirk & Pham, Phu, 2023, Updates on the taxonomy and distribution of Gastroserica Brenske, 1897, Microserica Brenske, 1894, and Moronoserica Ahrens, Lukic & Liu, 2023 (Coleoptera: Scarabaeidae: Sericinae: Sericini), pp. 551-566 in Zootaxa 5346 (5)</i> on page 561, DOI: 10.11646/zootaxa.5346.5.3, <a href="http://zenodo.org/record/8390721">http://zenodo.org/record/8390721</a>
Gastroserica yuebaensis Ahrens, Lukic, new species
No full text<i>Gastroserica yuebaensis</i> Ahrens, Lukic & Liu, new species <p>Figs. 4I–L, 25</p> <p> <b>Type material examined.</b> Holotype Ô [China] “ Shaanxi, Zhouzhi, Yueba, 2012-VI-30. N: 33.585 -33.572, E: 107.765-107.788, 1139-1573m, daytime / LW1321” (ZFMK).</p> <p> <b>Description of holotype.</b> Length: 6.0 mm, length of elytra: 4.4 mm, width: 3.5 mm. Body oval, dark brown, legs, one longitudinal stripe at middle of the elytra and its lateral margin, margins of pronotum, labroclypeus, apex of scutellum, and antennal funiculus yellowish, antennal club brown, dorsal surface dull and nearly glabrous.</p> <p>Labroclypeus transverse-elliptical, distinctly wider than long, widest at middle, lateral margins strongly convex and convergent to strongly rounded anterior angles; anterior margin widely but not shallowly emarginate medially, anterior margin strongly reflexed, lateral margin weakly reflexed; labrum strongly enlarged; lateral margins and ocular canthus produce a blunt angle; surface shiny, weakly convex, finely, densely punctate, with numerous long, erect setae; frontoclypeal suture finely incised and curved medially. Frons dull, with sparse, fine punctures, beside eyes and behind frontoclypeal suture with a few single short setae in larger punctures, otherwise with minute setae in punctures. Smooth area in front of eyes narrow, as wide as long. Ocular canthus sparsely finely punctate, narrow and moderately long (1/3 of ocular width), with a terminal seta. Eyes small, ratio of diameter/interocular width: 0.49. Antenna with ten antennomeres; club composed of four antennomeres, straight, 1.2 times as long as remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.</p> <p>Pronotum wide, widest at base, lateral margins evenly convex and convergent to blunt but weakly produced anterior angles, posterior angles moderately rounded. Anterior margin of pronotum straight, with fine and complete marginal line; basal marginal line absent; surface finely and densely punctate, with minute setae in punctures, anterior and lateral anterior margins sparsely setose. Hypomeron carinate, weakly produced ventrally. Scutellum triangular, finely and evenly densely punctate.</p> <p>Elytra elongate, widest at middle, striae distinctly impressed, finely and densely punctate, intervals convex, with fine and sparse punctures concentrated along striae, with very minute setae in punctures, odd intervals with a few short setae; epipleural edge robust, ending at slightly rounded external apical angle of elytra, epipleura densely setose, apical border chitinous, without a fringe of short microtrichomes (visible at ca 100x magnification).</p> <p>Ventral surface dull, finely and densely punctate, metasternum sparsely covered with fine, short, or very minute setae; metacoxa glabrous, with a few single setae laterally. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.7. Abdominal sternites finely punctate, with a transverse row of coarse punctures, each bearing a robust seta. Pygidium strongly convex and dull, with large, dense punctures, without smooth midline, with numerous short setae at apex.</p> <p>Legs moderately wide; femora finely and sparsely punctate, with two longitudinal rows of longer setae. Metafemur moderately shiny, anterior margin acute, without submarginal serrated line; anterior row of seta-bearing punctures present; ventral posterior margin finely serrate at apex, only weakly widened in apical half, dorsal posterior margin serrate, with a few short setae basally. Metatibia moderately long and wide, widest at middle, ratio width/length: 1/3.0; dorsal margin sharply carinate, with two groups of spines, basal group at middle, apical one at three quarter of metatibial length, in basal third with a few robust single setae; lateral face longitudinally convex, finely and sparsely punctate, along midline smooth, with minute setae in punctures; ventral edge finely serrate, with three robust equidistant setae; medial face smooth, apex interiorly near tarsal articulation bluntly truncate. Tarsomeres with fine, sparse setae ventrally, neither laterally nor dorsally carinate, dorsally smooth; metatarsomeres glabrous, with a strongly serrated ridge ventrally and a parallel subventral smooth carina immediately beside it; first metatarsomere little shorter than following two tarsomeres combined, a quarter of its length longer than dorsal tibial spur. Protibia short, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.</p> <p>Aedeagus: Fig. 4I–K. Habitus: Fig. 4L. Female unknown.</p> <p> <b>Diagnosis.</b> This new species is very similar to <i>Gastroserica nitidipyga</i> (Nomura, 1974). <i>Gastroserica yuebaensis</i> Ahrens, Lukic & Liu, new species differs from <i>G. nitidipyga</i> by the shorter and narrower left paramere, the narrower right paramere (lateral view).</p> <p> <b>Etymology.</b> The name of the new species is derived from the name of the type locality, Yueba (adjective in nominative singular case).</p> <p> <b>Genbank accessions.</b> Table 1.</p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on page 17, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
Microserica neosimplex Ahrens, Lukic, new species
No full text<i>Microserica neosimplex</i> Ahrens, Lukic & Liu, new species <p>Figs. 11E–H, 27</p> <p> <b>Type material examined.</b> Holotype Ô “ THAILAND bor. Chiang Dao env. 21.5.- 4.6.1995 lgt. Snizek M. / 1110 Sericini Asia spec.” (ZFMK). Paratypes: <b>Thailand:</b> 2 ♀♀ “ THAILAND bor. Chiang Dao env. 21.5.- 4.6.1995 lgt. Snizek M.” (ZFMK), 1 Ô “ Thai, 17.-24.V.1991 Chiang Dao 1000 m 19°25’N 98°52’E Vit Kubáň leg. / Thailand 91 Thanon Thong Chai D. Král & V. Kubáň / Coll. Dirk Ahrens ” (ZFMK), 1 Ô “ THAILAND bor. Chiang Mai 15.5.1997 lgt. M. Snizek ” (CP), 1 Ô “NW Thailand, 25.iv.-7.v. Chiang Mai prov., Ban San Pakia 1996 Sv. Bilý leg., 1700 m / TS 125” (CP), 1 Ô, 4 ♀♀ “ Thai, 17.-24.V.1991 Chiang Dao 1000 m 19°25’N 98°52’E Vit Kubáň leg. / Thailand 91 Thanon Thong Chai D. Král & V. Kubáň ” (ZFMK, NMPC), 1 Ô “839472 / 839472 Microserica spThai_ DE09_3 Thailand L. Dembicky 9.- 13.5.2009 Doi Chiang Dao env. Chiang Mai Prov. 19°24’45’’N 98°51’30’’E 1200m” (ZFMK), 1 Ô, 1 ♀ “ Thai 17-24/6.91 Doi Chiang Dao mts. 19.25N, 98.52E lgt. D. Kral 1000m” (NMPC), 22 ÔÔ, 2 ♀♀ “ Thai, 17.-26.V.1991 Chiang Dao 1000m 19°25’N 98°52’E Vít Kubáň leg. / ex. coll. Milan Nikodym, Praha ” (ZFMK), 5 ÔÔ “NW Thailand, Chieng Dao, Ban San Pakia, 5.-10.v.2004, 1200m, Sv. Bily ” (NME), 3 ÔÔ “ Thai, 9.-14.V.1991 Chiang Dao 350m 19°22’N 98°57’E V. Kuban lg. / coll. Milan Nikodym, Praha ” (ZFMK), 1 Ô, 1 ♀ “ Thai, 10.-16.V.1991 Chiang Dao 600m 19°24’N 98°55’E V. Kuban leg. / coll. Milan Nikodym, Praha ” (ZFMK). <b>China:</b> 1 Ô [China] “ Meng’a, Xishuangbanna, Yunnan, 23.V.1958, 1050-1080m, leg. Zhang Yiran / LW- 386” (IZAS), 1 Ô [China] “ Northern hill of Jingdong, Yunnan, 30.V.1956, leg. Zhao Yi ” (IZAS), 1 Ô [China] “ Menghun, Xishuangbanna, Yunnan, 17.VI.1958, 1200m, leg. Meng Xuwu / LW-391” (IZAS), 1 Ô [China] “ Meng’e, Xishuangbanna, Yunnan, 23.V.1958, 1050-1080m, leg. Zhang Yiran ” (IZAS), 1 Ô, 1♀ “ Mt. Xishan, Xiaguan, Yunnan, 29.Ⅴ.1955, 1800-1900m, leg. Krischanovsknja / LW-439” (IZAS), 1 Ô “ Shunbixiang, Yangbi County, Yunnan, 21.Ⅴ.2004, leg. Yang Xiujuan, Liu Yushuang / LW-468” (HBUM).</p> <p> <b>Description of holotype.</b> Length: 5.1 mm, length of elytra: 3.1 mm, width: 2.9 mm. Body oval, reddish brown, ventral surface including abdomen, frons, anterior central margin of pronotum, and elytral margins blackish brown, antennal club and legs yellowish brown, dorsal surface dull, sometimes partly iridescent shiny, nearly glabrous.</p> <p>Labroclypeus little wider than long, widest at base, lateral margins strongly convex and convergent to strongly rounded anterior angles; anterior margin weakly emarginate medially, margins weakly reflexed; lateral margins and ocular canthus produce a blunt angle; surface shiny, flat, finely and coarsely, densely punctate, with numerous long, erect setae; frontoclypeal suture finely incised and bent medially. Frons dull, with sparse, fine punctures, with minute setae in punctures, otherwise glabrous. Smooth area in front of eyes as wide as long. Ocular canthus narrow and moderately long (1/3 of ocular width), sparsely finely punctate, without terminal seta. Eyes small, ratio of diameter/interocular width: 0.57. Antenna with ten antennomeres; club composed of six antennomeres, straight, 1.5 times as long as remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.</p> <p>Pronotum wide, widest at base, lateral margins evenly convex and convergent to blunt, moderately produced anterior angles, posterior angles blunt.Anterior margin of pronotum weakly convex, with fine and complete marginal line; basal marginal line absent; surface finely and densely punctate, with minute setae in punctures, lateral and lateral anterior margins glabrous. Hypomeron carinate, weakly produced ventrally. Scutellum triangular, finely and densely punctate, on midline impunctate.</p> <p>Elytra short oval, widest at middle, striae distinctly impressed, finely and densely punctate, intervals convex, with fine and sparse punctures concentrated along striae, with minute setae in punctures, penultimate lateral interval with a few sparse short setae; epipleural edge robust, ending at slightly rounded external apical angle of elytra, epipleura densely setose, apical border chitinous, without a fringe of short microtrichomes (visible at ca 100x magnification).</p> <p>Ventral surface dull, finely and densely punctate, metasternum sparsely covered with fine, short, or very minute setae; metacoxa glabrous, with a few single setae laterally. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.67. Abdominal sternites finely punctate, with a transverse row of coarse punctures, each bearing a robust seta. Pygidium moderately convex and dull, with mixed finer and larger punctures, without smooth midline, with numerous short setae and a few longer in the larger punctures.</p> <p>Legs moderately wide; femora finely and sparsely punctate, with two longitudinal rows of longer setae. Metafemur moderately shiny, anterior margin acute, without submarginal serrated line; anterior row of seta-bearing punctures present; ventral posterior margin entirely smooth, distinctly widened in apical half, dorsal posterior margin serrate, with a few short setae basally. Metatibia moderately long and wide, widest at middle, ratio width/ length: 1/2.83; dorsal margin sharply carinate, with two groups of spines, basal group at one third, apical one at three quarter of metatibial length, in basal third with a few robust single setae; lateral face longitudinally convex, finely and sparsely punctate, along midline smooth, with minute setae in punctures; ventral edge finely serrate, with three robust equidistant setae; medial face smooth, apex interiorly near tarsal articulation bluntly truncate. Tarsomeres with fine, sparse setae ventrally, neither laterally nor dorsally carinate, dorsally smooth; metatarsomeres with a strongly serrated ridge ventrally and a parallel subventral smooth carina immediately beside it; first metatarsomere as long as following two tarsomeres combined, one third of its length longer than dorsal tibial spur. Protibia short, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.</p> <p>Aedeagus: Fig. 11E–G. Habitus: Fig. 11H.</p> <p> <b>Diagnosis.</b> <i>Microserica neosimplex</i> Ahrens, Lukic & Liu, new species is in external appearance and shape of aedeagus most similar to <i>Microserica allovarians</i> Ahrens, Lukic & Liu, new species. <i>Microserica neosimplex</i> Ahrens, Lukic & Liu, new species differs by the right paramere having no mesolateral tooth.</p> <p> <b>Etymology.</b> The species name is derived from the combined Greek prefix “neo” (new) and the species name “ <i>simplex</i> ”, with reference to the certain similarity to <i>M. simplex</i>.</p> <p> <b>Variation.</b> Length: 4.3–5.2 mm, length of elytra: 2.9–3.5 mm, width: 2.8–3.1 mm. The species varies from almost entire dark (black) to completely yellow. Female: completely yellow, antennal club short, composed of three antennomeres, little shorter than remaining antennomeres combined; pygidium flat, eyes smaller than in male.</p> <p> <b>Genbank accessions.</b> Table 1.</p>Published as part of <i>Ahrens, Dirk, Liu, Wangang, Lukic, Daniel & Bai, Ming, 2023, A taxonomic review of Microserica Brenske, 1894 from continental Asia (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), pp. 1-115 in Zootaxa 5241 (1)</i> on pages 34-35, DOI: 10.11646/zootaxa.5241.1.1, <a href="http://zenodo.org/record/7639734">http://zenodo.org/record/7639734</a>
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