215,264 research outputs found
Platysoma jongwooki M. Ohara et Ahn 2018
No full textPlatysoma jongwooki M. Ôhara et Ahn, 2018 Fig 2 MATERIAL EXAMINED. Russia: Primorsky Krai: Vladivostok, Botanic Garden, 43.2112°N, 131.9954°E, 27.VII 2021, 1 ex., leg. M.E. Sergeev (ISEA); Kravtsovka, 43.3645°N 131.6389°E, ~ 115 m, flight intercept trap, 8.VI 2019, 2 ex. leg. S.A. Kurbatov (CSCA); ~ 8 km NW Zanadvorovka, 43.384° N 131.528° E, ~ 420 m, window trap, 6–8. VI 2021, 2 ex., leg. I. Melnik (CSCA & VNIIKR); Gulf of Peter the Great, Popov Island, oak forest, 42,9558°N, 131.7421°E, 30. V 2021, 1 ex., M.E. Sergeev; Sikhote-Alin Nature Reserve, 20 km to NW from Plastun, Kuruma River floodplain, 44.9152°N, 136.2118°E, 1.VII 2021, 1 ex., M.E. Sergeev (ISEA). NOTES. The Vladivostok specimen was collected under bark of Pinus koraiensis Siebold & Zucc. (windfall from previous winter), in bark beetle galleries, the Sikhote Alin Range specimen – in pine-hardwood forest under bark of Larix sp., in the Ips subelongatus (Motschulsky, 1860) galleries, on Popov Island the specimen was collected in pitfall trap set up in an oak forest. DISTRIBUTION. Russia: Far East (new record). South Korea (Ôhara & Ahn, 2018).Published as part of Tishechkin, A. K., Zinchenko, V. K. & Sergeev, M. E., 2022, New and little known Histeridae species (Coleoptera) from Russia with a synonymy note, pp. 11-16 in Far Eastern Entomologist 467 on page 14, DOI: 10.25221/fee.467.2, http://zenodo.org/record/739965
Diaulota submarina Ahn 2023, sp. nov.
No full textDiaulota submarina sp. nov. (Figs. 1–4) Diaulota uenoi: Ahn, 1996: 284; Frank and Ahn, 2011: 26; Ahn et al., 2017: 306; Park and Lee, 2021: 240 [misidentification]. Description. Small, body length 2.5–2.9 mm. Body more or less narrow but robust, long setae densely pubescent (Fig. 1). Body reddish brown with blackish brown abdominal tergites VI–VII. Head slightly deflexed, 1.2 times as long as wide (Fig. 2A), sculpture reticulate, about 3 pairs of long filiform setae present on each side, infraorbital carina present (Fig. 2B). Antennomeres 4–5 more or less subquadrate, 6–10 transverse. Eye small, 0.2 times as long as head (Fig. 2A), minute setae present between facets. Labrum (Fig. 3A) large, semicircular, 12 long and macrosetae and 4–5 short and microsetae present on each side of midline. Mandibles (Fig. 3B) narrow and elongate, more or less symmetrical, small median tooth present. Maxilla (Fig. 3C) with galea and lacinia elongate, almost equal in length; galea corneous, apex and internal surface densely pubescent with long filiform setae; lacinia more or less acute, internal surface with comb of single row of about 8 well separated spines followed by several setae, a distinctive row of several setae present on mesal half of lacinial surface; maxillary palpus with 4 articles, robust, article 3 incrassate distally and longer than article 2, article 4 narrowed distally. Labial palpi (Fig. 3D) with 3 distinct articles, palpomere 1 slightly longer than wide, palpomere 2 narrower than 1 and almost 2.0 times as long as 1, palpomere 3 narrower than 2 and slightly longer than 1; ligula simple and elongate with 2 minute setae; twin pores, median pore, and distal pore indistinctly present; medial setae absent on prementum, real pores and setal pores present, basal pores absent, pseudopores absent in very narrow median area, about 4 pseudopores present on each side; a pair of indistinct comb-like hypoglossae present. Mentum (Fig. 3D) without v setae, anterior margin shallowly emarginate, several setae present, many punctures present. Submentum with numerous punctures and setae. Neck absent. Pronotum 0.9 times as long as wide, narrowest at base and widest near one third, basal margin almost straight but slightly prolonged posteriorly on median region, apical margin slightly prolonged anteriorly; long setae subparallel, uniformly distributed and apical half directed anteriorly, basal half directed posteriorly in a narrow median strip, others curve correspondingly; about 3 pairs of long filiform setae present, 1 on disc, 1 on lateral margin, and 1 on apico-lateral margin. Hypomeron entirely visible in lateral aspect, with longitudinal carina. Scutellum more or less diamond-shaped. Elytron 1.2 times as long as wide; 0.7 times as long as pronotum; long setae uniformly distributed and directed posteriorly; about 2 pairs of long filiform setae present, 1 on disc and 1 on lateral margin. Hind wings absent. Mesocoxal cavities contiguous; mesoventral process short and pointed (Fig. 2C). Metaventrite shorter than width of mesocoxa, expanded apico-basally (Fig. 2C). Metendosternite Y-shaped (Fig. 2C). Tibiae with two thick setae on hind margin. Tarsal formula 4-4-4, tarsus with long setae but spatulate seta absent. Claws narrow, long, sickle-shaped. Abdomen gradually broadening to rounded apex; relatively long numerous setae uniformly distributed, directed posteriorly. Tergites III–VI strongly impressed at base. Sternites not impressed at base. Male sternite VIII (Fig. 4A) prolonged posteriorly as broad triangular projection but female unmodified. Male tergite X slightly truncated at posterior margin (Fig. 4B). Female tergite X rounded at posterior margin (Fig. 4C). Median lobe with complex internal sclerites (Fig. 4D). Paramere (Fig. 4E). Spermatheca (Fig. 4F). Specimens Examined. Holotype: 1♁ (CNUIC), with labels as follows: “ KOREA: Chungnam: Anmyeon Isl., Bangpo Beach, 8 VI 1994, K. J. Ahn, ex rocks in low tide | Holotype Diaulota submarina Ahn, 2023 ”. Paratypes: 7 exx. (4 on slides), same data as holotype; 15 exx., KOREA: Chungnam Prov., Muchangpo, 28 III 1998, K.-J. Ahn, ex inside empty barnacles in low tide. Other specimens: 13 exx. (alcohol collection), Chungnam: Anmyeon Isl., Bangpo Beach, 7 VI 1994, K. J. Ahn, ex rocks in low tide; 10 exx. (alcohol collection, 1 on slide), Jeju Prov., Udomyeon, Yeonpyeong-ri, Udo island, 1 III 2007, KJ Ahn; 1 ex., Gyengnam Prov., Geoje City, Gabae-ri, 1 VII 2000, K.-J. Ahn, H.-J. Kim M.-J. Jeon, ex barnacles. Distribution. Korea (South). Etymology. The adjective submarina refers to the microhabitat of the species. Remarks. There is sexual dimorphism in size (bigger in male) and shape of head (broadening anteriorly in male but more or less parallel in female) in this new species as other Diaulota species (Fig. 1A). This species is similar to D. uenoi and almost indistinguishable by the external morphological characters (see key couplet below). However, it is different from the latter in mouthparts and the external shape and internal structure of the median lobe. Apical process of D. uenoi is broader and more abruptly bent upward (fig. 10L in Sawada, 1971) compared to the new species, narrower and slightly bent upward (Fig. 4D; fig. 40 in Ahn, 1996). Especially, the form of internal sclerites of median lobe are different: apical one larger and polygonal in D. submarina (Fig. 4D; fig. 40 in Ahn, 1996) but smaller and rounded in D. uenoi (fig. 10L in Sawada, 1971). They can be regarded as cryptic species.Published as part of Ahn, Kee-Jeong, 2023, Description of Diaulota submarina sp. nov. (Coleoptera: Staphylinidae: Aleocharinae) on Korean coasts, pp. 141-147 in Zootaxa 5336 (1) on pages 141-142, DOI: 10.11646/zootaxa.5336.1.8, http://zenodo.org/record/826868
Thinobius jejuensis Lee & Yoo & Ahn 2021, sp. n.
No full textThinobius jejuensis Lee & Ahn sp. n. (Figs. 1A, 2–3) Description. Length 1.04–1.30 mm. Body flattened, surface pubescent; dark brown. Head. Almost as long as wide and slightly narrower than pronotum; widest across eyes; clypeus trapezoidal; eye moderate in size and rounded in lateral aspect, with large eye facets and interfacetal setae; temple well developed, about 0.8 times as long as eye length in dorsal view; gular suture fused and broadly divergent in anterior and posterior part; neck well developed, distinctly transversely reticulate sculptures with some short setae (Figs. 2B–C); antenna slender, moderately elongate, and pubescent, antennomere 1 longest, 4 and 6 shortest, 1–2 and 7–11 elongate, 3 and 5 slightly elongate, 4 and 6 transverse (Fig. 2A). Mouthparts. Labrum transverse, semicircula; mandible triangle, apex bifid, with one blunt subapical tooth, prostheca and molar tooth well developed; maxillary palpus with four palpomeres, palpomere 1 transverse and small, 2 slightly dilated to apex, 3 largest, 2–3 with dense setae; apical margin of 3 about 3.0 times as wide as basal margin of 4; labial palpus with three elongate palpus, apex of palpomere 1 with two long setae and one pore, apex of 2 with one pore, 3 with few short sensilla at apex; mentum quadrate with one pair of long macrosetae and many setae. Thorax. Pronotum transverse, width 0.24–0.27 mm, widest about anterior third, surface pubescent; prosternum with few setae (Fig. 2D); scutellum an inverted triangle, anterior margin of scutellum emarginate, posterior part reticulate with many setae (Fig. 2E); elytron elongate and pubescent, posterior margin with membranous lobe; hind wing present; mesoventral process slightly extended and blunted at apex; metaventral carinae incomplete; metaventrite with two pairs of long macrosetae and dense setae (Fig. 2F); all tibiae with one long macroseta in middle. Abdomen. Posterior margin of tergite VII with fringe of setae; postero-lateral margin of tergite VIII slightly convex. Secondary sexual characteristics. Male sternite VIII emarginate, female with linear form; male tergite IX with ventral structs, struts as long as remainder, female tergite IX without ventral struts. Male sternite IX elongate, female sternite IX pentagon. Genitalia. Aedeagus oval (Figs. 3A–B); paramere short; spermatheca as in Fig. 3C. Type material. Holotype, 1 ♂, labeled as follows: KOREA: Jeju Prov., Seogwipo-si, Haye-dong, N33°13'54.45" E126°22'19.81" 2 m, 19 X 2014, KJ Ahn, IS Yoo, JS Lee, 10-20 cm deep under/in gravels on seashore. ‘ Holotype, Thinobius jejuensis Lee and Ahn, Desig. Jae-Seok Lee and Kee-Jeong Ahn 2021 ’ ‘ Deposited in the Chungnam National University Insect Collection, Korea’. Paratypes, 3 exx., labeled as same as Holotype (1 on slide; 1 on CNUIC voucher); 30 exx., same data as former except for ‘ N33°13'54.20" E126°22'18.49" 2 m, 05 VIII 2020, JS Lee, JY Park, YJ Kim, flotation’. 24 exx., same data as former except for ‘Yeraehaean-Ro, N33.232254, E126.371442, 19 X 2020, KJ Ahn, Under pebbles/gravels by flotation’. Distribution. Korea (Jeju island). Remarks. This species is similar to T. marinus, but can distinguished by the length of temple and the shape of antennomeres. Temple is shorter than the diameter of eye in T. jejuensis Lee & Ahn, sp. n. (Fig. 2B), but longer than the diameter of eye in T. marinus (Cameron, 1917). In addition, antennomeres 5 and 7–8 are elongate in the new species (Fig. 2A), but 4–8 are transverse in T. marinus. All specimens were collected on Jeju-do island, KoreaPublished as part of Lee, Jae-Seok, Yoo, In-Seong & Ahn, Kee-Jeong, 2021, Taxonomy of the coastal Thinobius Kiesenwetter (Coleoptera: Staphylinidae Oxytelinae) in Korea, pp. 261-268 in Zootaxa 4985 (2) on pages 263-264, DOI: 10.11646/zootaxa.4985.2.9, http://zenodo.org/record/494358
Atheta (Dimetrota) ovata Lee & Ahn 2022, sp. nov.
No full textAtheta (Dimetrota) ovata Lee & Ahn, sp. nov. (Figs. 1B, 3A–F, 4A–H, 5A–G, 6A–D) Description. Length 2.5–3.2 mm. Body (Fig. 1B) surface glossy, densely pubescent with microsculpture. Body dark brown to black; antennae, elytra and legs paler than other parts, brownish. Head. Slightly transverse (Fig. 4A), approximately 1.1–1.2 times as wide as long, widest across eyes, slightly narrower than pronotum; eyes large and prominent, about 1.5–1.6 times as long as temples; gular sutures moderately separated, more or less diverged basally; cervical carina complete. Antennae (Fig. 4B) long and slender; antennomeres 1–3 elongate, 1 longest, 2 about as long as 3, 4–10 quadrate to subquadrate, 11 about as long as 1, about as long as preceding two combined. Mouthparts. Labrum (Fig. 3A) with 10–11 macrosetae on each side of midline; epipharynx (Fig. 3B) with α-sensillum long and setaceous, about 3.0 times as long as ε-sensillum; β- and γ-sensilla short. Mandibles (Figs. 3C–D) asymmetrical, subtriangular, decurved and pointed apically, about 1.5–1.6 times as long as basal width; very few small denticles present in molar region; right one (Fig. 3C) with small internal tooth, internal margin slightly serrulate; prostheca developed, composed of three portions, second portion slightly longer. Galea and lacinia of maxilla (Fig. 3E) long and slender; maxillary palpus elongate and pubescent; palpomere 1 smallest, 2 about 2.6–2.8 times as long as wide, 3 slightly longer than 2, about 2.5–2.7 times as long as wide, 4 digitiform, filamentous sensilla not reaching to basal half. Prementum (Fig. 3F) with two medial setae very narrowly separated; two basal pores contiguous, less than 1.0 times width of basal pore; several medial pseudopores, lateral pseudopores, 1 setal pore and 2 real pores present on each side of midline; labial palpomere 1 largest, about 1.5–1.6 times as long as wide, γ-setula contiguous with b-seta, 2 shortest, about 1.6–1.8 times as long as wide, 3 more or less dilated apically and slightly shorter than 1, about 2.5–3.0 times as long as wide. Mentum (Fig. 3F) trapezoidal, anterior margin slightly emarginate; v-seta relatively long, close to u-seta. Thorax. Pronotum (Fig. 4C) approximately 1.3–1.4 times as wide as long, widest in apical third to half. Prosternum as in Fig. 4D. Metanotal scutum (Fig. 4E) with 1 long seta and about 3–4 short setae on each side of midline. Mesoventral process (Fig. 4F) distinctly pointed at apex, longer than isthmus and metaventral process combined. Scutellum as in Fig. 4G. Elytra slightly longer and wider than pronotum; elytron (Fig. 4H) approximately 1.6 times as long as wide; hind wings fully developed, flabellum (Fig. 4E) composed of about 6–7 long setose lobes. Legs. Length ratio of tarsomeres 22:26:30:76 (protarsus); 30:35:38:35:68 (mesotarsus); 45:44:43:46:96 (metatarsus). Abdomen. Surface glossy and densely pubescent, with transverse and reticulate microsculpture (Fig. 5C); macrochaetal arrangement of tergites II–VI 02-13 (or 23)-23-23-23; male sternites III–VI with many small pores, VII with several small pores in anterior region; male tergite VIII (Fig. 5A) with 4 macrosetae on each side of midline, posterior margin (Fig. 5B) with broad process, slightly emarginate in median region and slightly angled in postero-lateral margins; male sternite VIII (Fig. 5D) with 10 macrosetae on each side of midline, posterior margin with inconspicuous marginal setae; posterior margin of female tergite VIII (Fig. 5E) truncate in median region; female sternite VIII (Fig. 5F) with 8 macrosetae, posterior margin (Fig. 5G) broadly rounded, with conspicuous and long marginal setae, minute setae present in median region. Aedeagus. Median lobe (Figs. 6A–B) narrowly ovate, apical process subtriangular and convergent at apex, apex slightly swollen and globular in ventral aspect. Apical lobe of paramerites (Fig. 6C) subparallel-sided, with 4 setae; b-seta longest, distinctly longer than other setae short and subequal in length, c- and d-setae close together. Spermatheca. Bursa elongate, with slender umbilicus; duct recurved, deflected at apex (Fig. 6D). Type material. Holotype, ♂, labeled as follows: ‘ KOREA: Gangwon Prov., Pyeongchang-gun, Jinbu-myeon, Dongsan-ri, Mt. Odaesan, Sangwonsa, 22 VI–16 VIII 2001, S.-J. Park, C.-W. Shin, ex FIT’. Paratypes, 9 exx., same data as holotype. Material examined. SOUTH KOREA: Chungbuk Prov.: 3 exx., Buyeo-gun, Oesan-myeon, Gaedeok-ri, Mt. Wolmyeongsan, 1 vi 2000, US Hwang, HJ Kim, sifting; 1 ex., Danyang-gun, Mt. Sobaeksan, Cheongdong, 7–9 v 1999, US Hwang, HJ Kim, sifting. Chungnam Prov.: 1 ex., Gongju-si, Banpo-myeon, Sangsin-ri, Mt. Gyeryongsan, 21 v 2000, MS Kim, near stream. Gangwon Prov.: 1 ex., Hongcheon-gun, Naechon-myeon, Mt. Baekamsan, Garyeong fall, 25 v–20 vi 2002, KJ Ahn, SJ Park, JS Park, FIT; 2 exx., Hongcheon-gun, Nae-myeon, Mt. Gyebangsan, Unduryeong, N37° 42.49.9′ E128° 26.40.3′, 1100 m, 11 v 2007, TK Kim, YH Kim, fungus on log; 5 exx., Injegun, Mt. Jeombongsan, Gombaeryeong, 23–30 viii 1999, US Hwang, bait trap; 1 ex., Jeongseon-gun, Gohan-eup, Mt. Hambaeksan, 13 vii 1999, US Hwang, mushroom; 2 exx., Mt. Seoraksan, 23 viii 1996, T. Pierre, mushroom; 21 exx., Pyeongchang-gun, Cheondong-ri, Mt. Sambangsan, 13 vii–15 viii 2001, KJ Ahn, SJ Park, CW Shin, FIT in Pinus forest; 67 exx., Pyeongchang-gun, Jinbu-myeon, Dongsan-ri, Mt. Odaesan, Sangwonsa, 30 iv–4 vi 2001, KJ Ahn, SJ Park, MS Kim, MJ Jeon, FIT; 161 exx., same data as former except for ‘ 4 vi–22 vi 2001 ’; 9 exx., same data as former except for ‘ 18 viii 2000, MH Kim, entirely rotten mushroom (Boletaceae)’; 5 exx., same data as former except for ‘ 22 viii 2000, KJ Ahn, JH Ahn’; 152 exx., same data as former except for ‘ 22 vi–16 viii 2001, SJ Park, CW Shin, FIT’; 15 exx., same data as former except for ‘ 16 viii–15 ix 2001 ’; 5 exx., same data as former except for ‘ 15 ix–14 xi 2001, KJ Ahn, CW Shin, FIT’; 9 exx., same data as former except for ‘ 21 iv–18 v 2002, SJ Park, CW Shin, FIT’; 17 exx., same data as former except for ‘ 18 v–23 vi 2002, SJ Park, JS Park, FIT’; 2 exx., same data as former except for ‘ 23 vi 2002, SJ Park, JS Park, mushroom’; 2 exx., same data as former except for ‘ 13 vii 2004, SM Choi, mushroom’; 6 exx., same data as former except for ‘ 18 vi 2004, SJ Park, FIT’; 27 exx., same data as former except for ‘ 18 vi–22 vii 2004, SJ Park, KM Yang, DH Lee, FIT’; 2 exx., same data as former except for ‘37°47′8.3″ E128°33′54.0″ 880 m, 10 ix 2009, TK Kim, YH Kim, leaf litter’; 17 exx., same data as former except for ‘ N37°47′3.4″ E128°33′44.6″ 930 m, 12 VI 2012, YH Kim, SG Lee, YG Ban, JC Lim, mushroom’; 2 exx., same data as former except for ‘Bukdaesa, 23 viii 2000, MH Kim, mushroom’; 2 exx., same data as former except for ‘Namdae jijangam, 12 ix 2007, HW Kim, YH Kim, mushroom’; 7 exx., Pyeongchang-gun, Jinbu-myeon, Mt. Odaesan, Woljeongsa, 22 viii–20 x 2000, KJ Ahn, FIT; 4 exx., Pyeongchang-gun, Mt. Odaesan, Jeokmyeolbogung, 7–9 vii 1998, KL You, HJ Lim, FIT; 1 ex., Pyeongchang-gun, Bangrim-myeon, Ungyo 2-ri, Mt. Baekdeoksan, 12 vii–16 viii 2001, KJ Ahn, SJ Park, CW Shin, FIT; 1 ex., Taebaek-si, Mt. Taebaeksan, Baekdansa, 16 vii 1999, US Hwang, HJ Kim, sifting; 1 ex., Yangyang-gun, Seo-myeon, Osaek-ri, Hangyeryeong, 16 viii 2000, MH Lim, mushroom; 3 exx., Yangyang-gun, Seo-myeon, Osaek-ri, Mt. Seoraksan, Osaekyaksu, 31 vii–15 ix 2002, SJ Park, CW Shin, JS Park, FIT; 3 exx., same data as former except for ‘Osaekyaksu, 20 vii 2004, SJ Park, KM Yang, KJ Ahn, mushroom’; 2 exx., Yeongwol-gun, Suju-myeon, Mt. Baekdeoksan, Gwaneumsa, 13 vii–15 viii 2001, KJ Ahn, SJ Park, CW Shin, FIT. 2 exx., Yeongwol-gun, Yeongwol-eup, Mt. Taehwasan, 14 viii 2001, MH Kim, mushroom (Boletaceae). Jeonbuk Prov.: 3 exx., Jeongeup-si, Mt. Naejangsan, Naejangsa, Geumseon valley, 15–24 vi 2000, US Hwang, HJ Kim, FIT. Distribution. Korea (South). Remarks. This species is very similar to Atheta (Dimetrota) machonryongica, but can be distinguished by the characters provided in the key and the different shape and structure of aedeagus and spermatheca. Most specimens were collected by FIT and from mushroom in forest. Etymology. Named from Latin ovata meaning “ovate”, which refers to the shape of median lobe of aedeagus.Published as part of Lee, Seung-Gyu & Ahn, Kee-Jeong, 2022, Korean species of the Atheta Thomson subgenus Dimetrota Mulsant & Rey (Coleoptera: Staphylinidae: Aleocharinae) with a description of new species, pp. 401-416 in Zootaxa 5138 (4) on pages 406-411, DOI: 10.11646/zootaxa.5138.4.3, http://zenodo.org/record/657154
Realistic roofs without local minimum edges over a rectilinear polygon
No full textComputing all possible roofs over a given ground plan is a common task in automatically reconstructing a three dimensional building. In 1995, Aichholzer et al. proposed a definition of a roof over a simple polygon P in the xy-plane as a terrain over P whose faces are supported by planes containing edges of P and making a dihedral angle ��/4 with the xy-plane. This definition, however, allows roofs with faces isolated from the boundary of P and local minimum edges inducing pools of rainwater. Very recently, Ahn et al. introduced ��realistic roofs�� over a rectilinear polygon with n vertices by imposing two additional constraints under which no isolated faces and no local minimum vertices are allowed. Their definition is, however, restricted and excludes a number of roofs with no local minimum edges. In this paper, we propose a new definition of realistic roofs over a rectilinear polygon that corresponds to the class of roofs without isolated faces and local minimum edges. We investigate the geometric and combinatorial properties of realistic roofs and show that the maximum possible number of distinct realistic roofs over a rectilinear n-gon is at most 1.3211m(m?m/2?), where m=(n?4)/2. We also present two algorithms that generate all realistic roofs. ? 2017 Elsevier B.V.11sciescopu
Pseudcolenis hoshinai Park & Ahn, new species
No full textPseudcolenis hoshinai Park & Ahn, new species Figs. 2, 5, 9–11, 13, 15, 18 Type series. Holotype, male, labeled as follows: “ KOREA: Jeonbuk Prov., Imsil-gun, Samkye-myeon, Sesim-ri, Gameunsan, 15 IX 2002, M.-H. Kim, ex mushroom; Holotype, Pseudcolenis hoshinai Park and Ahn, Desig. S. -J. Park and K.-J. Ahn 2005 ”. Deposited in CNUIC, Daejeon. Paratypes, 24; 14 males, 10 females: same data as holotype. Deposited in CNUIC, Daejeon. Description. Body length about 1.8–2.0 mm (holotype: 1.9 mm). Body convex, glabrous, almost concolorous, brown to dark brown. Antennomeres 1–6 and 11 light brown, 7–10 darker. Body about 1.6 times longer than wide, widest at about basal one fourth of elytra. Head (Fig. 2) about 1.3 times wider than long, with some fine scattered punctures, very weak dense strigulae present, widest at eyes, sharply narrowed behind eyes. Eyes oval, strongly projected. Mandible asymmetrical, without subapical tooth; prostheca and molar lobe bearing grinding surface present; retinaculum absent. Clypeal line clear. Apical margin of labrum shallowly emarginate, with long and short setae. Antenna (Fig. 5) slender, with antennomeres 7–11 pubescent with long or short setae, others sparser, 3 almost equal to 2 in length, 8 longer than 6. Pronotum about 1.9 times wider than long, widest at base, weakly punctate, with very weak transverse strigulae as dense as those of head. Elytra about 1.1 times longer than wide, as weakly punctate as pronotum, with transverse strigulae finer and sparser than those of head or pronotum, without rows of punctures, with sutural stria extending to near scutellum. Mesosternum impunctate, finely microreticulate, with a blunt and incomplete medial carina. Mesocoxal cavity distantly separated from mesepimeron; metasternum impunctate, without setae except in median region with some long and short setae, not microreticulate medially, finely microreticulate laterally. Legs (Figs. 9–11) slender, tarsal formula 5 - 4 - 4 in both sexes; protibia with short or long spines along outer and apical margins; male protarsi little more dilated than those of female, meso- and metatarsomere 1 longer than 2–3 combined. Hind wings normal. Aedeagus (Figs. 13, 15) slender and elongated; median lobe moderately narrowed and pointed apically in ventral aspect, slightly curved ventrally in lateral aspect, apex moderately pointed in lateral aspect, ventral piece divided, with small projections in ventral and lateral aspects, internal sac complex, apex of central piece of internal sac armature slightly curved ventrally in lateral aspect; parameres (Figs. 13, 15) slender, reaching near apex of median lobe, with two long and flexible setae at apex in ventral and lateral aspect. Spermatheca (Fig. 18) with spermathecal gland, slightly swollen at base. Distribution. Korea. Comparative remarks. Pseudcolenis hoshinai is very similar to P. h i l l e r i in body shape and structure of the aedeagus. However, the new species can be distinguished from P. hilleri by having antennomere 6 wider than long, and the central piece of the internal sac armature long and in lateral aspect slightly curved ventrally at apex. In contrast, in P. h i l l e r i antennomere 6 is longer than wide, and the central piece of the internal sac armature is relatively short and in lateral aspect strongly curved ventrally at apex. The new species is also similar to P. flavicollis Daffner, 1988 a from northern India and P. p i c e a (Hisamatsu, 1964) from Japan in body size and structures of the aedeagus. However, P. hoshinai differs from P. flavicollis in having round-oval body shape (oval in P. flavicollis). Further, in ventral aspect the apex of the median lobe of P. flavicollis is more sharply pointed than that of P. hoshinai. Pseudcolenis hoshinai differs from P. p i c e a in having very weak transverse strigulae on elytra, while elytra of P. p i c e a have clear transverse strigulae.Published as part of Park, Sun-Jae & Ahn, Kee-Jeong, 2007, Two Pseudoliodine genera Dermatohomoeus Hlisnikovský and Pseudcolenis Reitter (Coleoptera: Leiodidae: Leiodinae) in Korea, with a description of Pseudcolenis hoshinai new species, pp. 49-56 in Zootaxa 1427 on pages 53-55, DOI: 10.5281/zenodo.17576
Amblopusa vancouverensis Yoo & Ahn 2020, sp. nov.
No full text<i>Amblopusa vancouverensis</i> Yoo & Ahn sp. nov. <p>(Figs. 2, 18–25, 29)</p> <p>urn:lsid:zoobank.org:act: D3C62562-A788-43C1-ABF5-018C30912A48</p> <p> <b>Description.</b> BL 1.7–2.1 mm, elongate, parallel-sided, somewhat flattened dorsally. Body light brown to brown, abdomen except segment VIII darker. <b>Male.</b> Head round, about 1.14 times as long as wide; lateral margin somewhat linear; dorsal surface flattened, evenly pubescent; microsculpture of dorsal surface imbricate, anisodiametric. Occipital carina more or less linear, complete. Eyes very small with about 6 facets, about 0.11–0.12 times as long as temple, about 0.08 times as long as head. Labrum transverse, anterior margin slightly convex. Mandibles (Figs. 19–20) asymmetrical; left and right ones with somewhat different irregular serrations. Labium (Fig. 22) with ligula rod-shaped, entire at apex; ligula shorter than half length of palpomere 1, as long as palpomere 2; labial palpi with 2 articles, substyliform, palpomere 2 shorter than half length of 1; twin pores present, prementum without pseudopores medially and laterally; setal pores present. Maxilla (Fig. 20) with galea shorter and narrower than lacinia; palpomere 3 dilated apically; internal surface of lacinia with large spine apically, 5 short spines more medially and 1 large spine behind these. Memtum (Fig. 22) trapezoidal, about 0.7 times as long as wide; anterior margin broadly and moderately emarginate; seta v absent. Submentum with numerous punctures and setae; punctation on surface slightly denser than those of mentum. Antenna (Fig. 18) short, increasing in width toward apex, not exceeding posterior margin of pronotum when extended posteriorly; antennomere 1 about 1.1 times as long as 2, 4–6 similar in length, last antennomere about 1.5 times as long as the preceding one; antennomere 4 somewhat round, 5–10 transverse. Neck absent. Pronotum subquadrate, as long as wide; lateral margin sinuate; hypomeron broad. Mesoventral process pointed at apex. Mesocoxal cavities contiguous, posterior margin of mesocoxal cavities not carinate. Elytron about 1.7–1.8 times as long as wide, about 0.8–0.9 times as long as pronotum; postero-lateral margin linear, not sinuate. Hind wings absent. Hind tarsus slightly longer than half length of hind tibia. Tarsal formula 4-4-5. One empodial seta present, much shorter than claws. Abdomen flattened dorsally and distinctly convex ventrally, widened posteriorly; abdominal tergites III–VII strongly impressed at base; abdominal sternite III with basal carina abruptly V-shaped; abdominal tergite VIII with 4 macrosetae on each side of midline, posterior margin straight; abdominal sternite VIII with 5 macrosetae on each side of midline, posterior margin prolonged medially. Median lobe (Fig. 23) of aedeagus with apical lobe strongly curved. Paramere of aedeagus as in Figs. 24–25. <b>Female.</b> Posterior margin of abdominal sternite VIII less prolonged than male. Spermatheca (Fig. 29) with short duct and not coiled.</p> <p> <b>Type series.</b> Holotype ♂, labeled as follows: CANADA: British Columbia, Vancouver Island, Ucluelet, Wild Pacific Trail, N48°55′39.23″ E125°32′22.74″ 6 m, 16 XI 2018, JH Song, JS Lee, 0–20 cm deep, near log on gravel beach, flotation; Holotype, <i>Amblopusa vancouverensis</i> Yoo & Ahn, Desig. I. -S. Yoo & K.-J. Ahn 2019. Paratypes 20, same data as holotype (8 exx.; 1♂ 1♀ on slides; 10 exx. in 100% EtOH).</p> <p> <b>Distribution.</b> Canada (Vancouver Island).</p> <p> <b>Remarks.</b> <i>Amblopusa vancouverensis</i> is similar to <i>A. brevipes</i> but can be easily distinguished by: smaller body, longer head with linear lateral margins, shorter antennomeres, and different shapes in both median lobe and spermatheca.</p> <p>The specimens were collected in 0–20 cm deep, near log on gravel beach in Vancouver Island by flotation method (Figs. 5–6).</p>Published as part of <i>Yoo, In-Seong & Ahn, Kee-Jeong, 2020, Discovery of a new intertidal species, Amblopusa vancouverensis from Vancouver Island, Canada with notes on Amblopusa brevipes Casey (Coleoptera, Staphylinidae Aleocharinae), pp. 505-514 in Zootaxa 4803 (3)</i> on pages 511-513, DOI: 10.11646/zootaxa.4803.3.6, <a href="http://zenodo.org/record/3920511">http://zenodo.org/record/3920511</a>
Liogluta changwhani Lee and Ahn, sp. nov.
No full textLiogluta changwhani Lee and Ahn, sp. nov. (Figs. 1 A, 2–3) Description. Length 2.5–2.8 mm. Body (Fig. 1 A) parallel-sided; surface fairly glossy and densely pubescent, with microsculpture. Body dark brown to black; head almost black; pronotum and abdomen darker than elytra; legs paler, yellowish brown. Head. Subquadrate, about 1.0–1.1 times as wide as long, widest across eyes, slightly narrower than pronotum; eyes large and prominent, about 1.4–1.5 times as long as temples; gular sutures moderately separated, more or less diverged basally; infraorbital carina complete; cervical carina complete. Antennae (Fig. 3 A) long and slender; antennomeres 1–3 elongate, 1 longest, 2 about as long as 3, 4–10 subquadrate to slightly transverse, 11 longer than wide, about as long as preceding two combined. Mouthparts. Labrum (Fig. 2 A) transverse, slightly emarginate in anterior margin, with ε-sensillum and about 9–10 macrosetae on each side of midline; epipharynx (Fig. 2 B) with several sensilla, including 2 lateral sensory rows on each side of midline; αsensillum long and setaceous, about 2.0 times as long as ε-sensillum, β-sensillum short, convergent apically, γsensillum reduced. Mandibles (Figs. 2 C–D) asymmetrical, subtriangular, decurved and pointed apically, about 1.5–1.6 times as long as basal width; minute denticles present in molar region; right one (Fig. 2 C) with small internal tooth, internal margin slightly serrulate; prostheca developed, composited three portions, second portion slightly longer. Galea and lacinia of maxilla (Fig. 2 E) long and slender; lacinia having seven spines in distal comb region, contiguous with two isolated spines; maxillary palpus elongate, with pubescence and long setae; palpomere 1 smallest, 2 about 2.8–3.0 times as long as wide, 3 slightly longer than 2, about 2.7–2.9 times as long as wide, 4 digitiform, filamentous sensilla reaching to basal half. Labium (Fig. 2 F) with ligula divided into 2 lobes in basal half; prementum with two medial setae widely separated; two basal pores narrowly separated, about 1.0–2.0 times width of basal pore; several medial pseudopores, 1 setal pore and 2 real pores present on each side of midline; labial palpus with many setulae; palpomere 1 largest, about 2.0 times as long as wide, γ-setula contiguous with bseta, 2 shortest, about 1.4–1.6 times as long as wide, 3 subparallel-sided, slightly shorter than 1, about 3.0–3.5 times as long as wide. Mentum (Fig. 2 F) trapezoidal, anterior margin emarginate; v-seta short, close to u-seta. Thorax. Pronotum slightly transverse, approximately 1.3 times as wide as long, widest in apical third; hypomera fully visible in lateral aspect. Metanotal scutum with 1 long seta and about 4–5 relatively short setae on each side of midline. Mesocoxal cavities narrowly separated, mesoventral process pointed at apex, slightly longer than isthmus and metaventral process combined; isthmus slightly longer than metaventral process. Elytra longer and slightly wider than pronotum; elytron approximately 1.5–1.6 times as long as wide, pubescence directed posteriorly and postero-laterally; postero-lateral margin almost straight; hind wings fully developed, flabellum composed of about 5–6 long setose lobes. Legs. Slender and long, with pubescence and macrosetae; meso- and metatibiae with different length of two spurs at apex; tarsal formula 4-5-5, length ratio of tarsomeres 25:27:30:67 (protarsus); 31:36:38:39:68 (mesotarsus); 48:46:44:42:80 (metatarsus); one empodial seta present, about as long as claw. Abdomen. Parallel-sided; surface distinctly glossy and densely pubescent, with reticulate microsculpture; macrochaetal arrangement of tergites II–VI 01-21-13 -13-13; male tergite VIII (Fig. 3 B) with 4 macrosetae on each side of midline; broad process present in median region and posterior margin crenate; male sternite VIII (Fig. 3 C) with 9 macrosetae on each side of midline, posterior margin slightly convex, subtriangular, with long marginal setae; posterior margin of female tergite VIII (Fig. 3 D) subtruncate; female sternite VIII (Fig. 3 E) with 7 macrosetae, posterior margin slightly emarginate in median region, with conspicuous marginal setae and minute setae. Aedeagus. Median lobe (Figs. 3 F–G) narrowly ovate and widest in basal fourth, apical process elongate and convergent at apex in ventral aspect; internal sac developed. Apical lobe of paramerites (Fig. 3 H) with four setae; a-seta slightly longer than b- and d-setae subequal in length, c-seta very short and close to d-seta. Spermatheca. Bursa dilated apically and conical shaped umbilicus; duct loosely coiled (Fig. 3 I). Type material. Holotype, ♂, labeled as follows: ‘ KOREA: Chungnam Prov., Daejeon-si, Seo-gu, Jangandong, Mt. Jangtaesan, N36°13′03.3″ E127°20′36.2″ 258 m, 28 III 2012, DH Lee, TK Kim, SG Lee; HOLOTYPE Liogluta changwhani Lee and Ahn 2016 ’. Desig. S.-G. Lee and K.-J. Ahn 2016. Paratypes, 40 exx. (total): 19 exx. (one on slide), same data as Holotype; 21 exx. (two on slide), Korea. Gyeongbuk prov., Yongjang-ri, Naenammyeon, Gyeongju-si, ex FIT 21.V-26.VI.2007, YB Cho coll. E129°12′42.9″ N35°46′19.5″. Material examined. SOUTH KOREA: Chungnam prov.: 11 exx. (five in 95% ETOH), Daejeon-si, Seo-gu, Jangan-dong, Jangtaesan Recreational Forest, N36°13′4.32″ E127°20′34.44″ 257m, 17 III 2011, IS Yoo, YH Kim, SG Lee, leaf litters. Distribution. Korea (South). Remarks. Adults are similar to those of L. pyonganica, but can be distinguished by the characters provided in the key and different shape and structure of aedeagus and spermatheca. Etymology. Named after the late professor Chang-Whan Kim in honor of his pioneering research on Korean insects.Published as part of Lee, Seung-Gyu & Ahn, Kee-Jeong, 2016, A taxonomic review of Korean Liogluta Thomson (Coleoptera, Staphylinidae, Aleocharinae) with descriptions of three new species, pp. 285-303 in Zootaxa 4193 (2) on pages 286-290, DOI: 10.11646/zootaxa.4193.2.5, http://zenodo.org/record/16691
Amischa koreana Lee & Ahn 2023, sp. nov.
No full textAmischa koreana Lee & Ahn, sp. nov. (Figs. 1C, 3A–F, 4A–H, 5A–F, 6A–E) Description. Length 1.6–1.8 mm. Body (Fig. 1C) subparallel-sided; surface slightly glossy and densely pubescent, with microsculpture. Body reddish yellow to reddish brown; basal antenna and leg paler and yellowish; apical segments of abdomen paler than other segments. Head (Fig. 4A). Subtriangular with broad neck, approximately 1.0–1.1 times as wide as long, widest behind eyes, narrower than pronotum; eyes moderate in size and slightly prominent, about as long as temples; gular sutures moderately separated; infraorbital carina absent; cervical carina absent. Antenna (Fig. 4B) relatively short and slender; antennomeres 1–3 elongate, 1 longest and slightly longer than 2, 3 distinctly shorter than 2, 4–10 subquadrate to slightly transverse, slightly 11 shorter than wide and about as long as preceding two combined. Mouthparts. Labrum (Fig. 3A) transverse, slightly emarginate in anterior margin, with ε-sensillum and about 8 macrosetae on each side of midline; epipharynx (Fig. 3B) with several sensilla, including 2 lateral sensory rows on each side of midline; α-sensillum short, about as long as ε-sensillum and slightly shorter than lateral sensory rows; β and γ-sensilla reduced. Mandibles (Figs. 3C–D) asymmetrical, subtriangular, decurved and pointed apically, about 1.5–1.6 times as long as basal width; right one (Fig. 3C) with small internal tooth, internal margin slightly serrulate; prostheca developed, composited three portions, second portion slightly longer. Galea and lacinia of maxilla (Fig. 3E) long and slender; lacinia composited seven spines in distal comb region, two isolated spines present; last spine of distal comb region and isolated spines close together; maxillary palpus elongate and pubescent; palpomere 1 smallest, 2 about 2.8–3.0 as long as wide, 3 slightly longer than 2, about 2.3–2.5 times as long as wide, 4 short, filamentous sensilla reaching to basal half. Labium (Fig. 3F) with ligula slightly convex apically; prementum with two medial setae widely separated; two basal pores widely distant, more than 5.0 times width of basal pore; several medial pseudopores, 1 setal pore and 2 real pores present on each side of midline; labial palpus elongate, with many setulae; palpomere 1 largest, about 1.6–1.8 times as long as wide, with γ-setula close to b-seta, 2 shortest, about 1.2–1.4 times as long as wide, 3 narrowly long and about as long as 1, about 3.5–4.0 times as long as wide. Mentum (Fig. 3F) trapezoidal, anterior margin slightly emarginate; v-seta short, close to u-seta. Thorax. Pronotum (Fig. 4C) approximately 1.2 times as wide as long, widest in about middle. Metanotal scutum (Fig. 4E) with 1 long seta and about 1 short seta on each side of midline. Mesocoxae narrowly separated; mesoventral process (Fig. 4F) pointed at apex, reaching to middle of mesocoxae; mesocoxal cavities unmargined. Elytra slightly longer and wider than pronotum; elytra (Fig. 4H) approximately 1.5–1.6 times as long as wide, pubescence directed posteriorly and postero-laterally, postero-lateral margin sinuate; hind wings fully developed, flabellum composed of about 2 setose lobes. Leg slender and long, with dense pubescence and macrosetae; middle and hind tibiae with different length of two spurs at apex; tarsal formula 4-5-5, length ratio of tarsomeres 17:19:20:42 (front tarsus); 20:22:22:21:36 (middle tarsus); 31:32:29:25:43 (hind tarsus); one empodial seta present, shorter than claw. Abdomen. Parallel-sided; surface glossy and densely pubescent, with fine and imbricate microsculpture (Fig. 5A); macrochaetal arrangement of tergites II–VI 01-02-02-12 (or 02)-12; male tergite VIII (Fig. 6A) with 4 long macrosetae on each side of midline, posterior margin subtruncate; male sternite VIII (Fig. 6B) with about 7 long macrosetae on each side of midline, posterior margin convex, slightly rounded, with inconspicuous and long marginal setae; posterior margin of female tergite VIII (Fig. 5B) truncate; female sternite VIII (Fig. 5C) with about 6 long macrosetae on each side of midline, posterior margin (Fig. 5D) truncate in median region, with about 10 marginal setae conspicuous and relatively short. Aedeagus. Median lobe narrowly ovate; apical process slightly bent and pointed at apex in lateral aspect (Fig. 6C); pointed at apex in ventral aspect; distal crest short. Paramere (Fig. 6D) narrow; condylite short; apical lobe of paramerite pointed at apex and with 4 setae, d-seta very long, other setae short and subequal in length. Spermatheca. Bursa elongate, with large umbilicus; duct shortly coiled at apex (Figs. 5F, 6E). Type Material. Holotype, labeled as follows: ‘ KOREA: Gyeongbuk Prov., Uljin-gun, Seo- myeon, N36˚57'18.9" E129˚17'27.3" 141 m, 23 vii 2010, TK Kim, YH Kim, JH Jeon, leaf litters \ HOLOTYPE Amischa koreana Lee & Ahn Desig. S. - G. Lee and K.-J. Ahn 2022’ [CNUIC]. Paratypes, 4 exx., same data as holotype (two on slide) [CNUIC]. Distribution. Korea (South). Remarks. Amischa koreana is similar to A. bifoveolata, but can be distinguished by the characters provided in the key and the different external form and internal structure of the aedeagus (narrower median lobe and paramere and shaper apical process of median lobe) and the different shape of spermatheca.Published as part of Lee, Seung-Gyu & Ahn, Kee-Jeong, 2023, Korean species of the genus Amischa Thomson (Coleoptera: Staphylinidae Aleocharinae), with a description of new species, pp. 478-488 in Zootaxa 5230 (4) on pages 482-487, DOI: 10.11646/zootaxa.5230.4.5, http://zenodo.org/record/756410
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