151,954 research outputs found
FIGURE 3. Carex daxinensis Y. Y. Zhou & X. F in Notes on Carex (Cyperaceae) from China: three new species
No full textFIGURE 3. Carex daxinensis Y. Y. Zhou & X. F. Jin, sp. nov. (A) habit; (B) staminate scale; (C) pistillate scale; (D) perigynium; (E) achene (drawn by Xiao-Feng Jin from holotype in HTC).Published as part of Zhou, Ying-Ying & Jin, Xiao-Feng, 2014, Notes on Carex (Cyperaceae) from China: three new species, pp. 133-140 in Phytotaxa 164 (2) on page 136, DOI: 10.11646/phytotaxa.164.2.7, http://zenodo.org/record/513266
318_PineSeco
No full textNMR raw data associated with the article:
Bin Zhou, Yvette Alania, Mariana Reis, Shu-Xi Jing, James B. McAlpine, Ana K. Bedran-Russo, Shao-Nong Chen, Daneel Ferreira, and Guido F. Pauli*
Seco B‑Type Oligomers from Pinus massoniana Expand the Procyanidin Chemical Space and Exhibit Dental Bioactivity
Journal of Natural Products, 2022
https://doi.org/10.1021/acs.jnatprod.2c0066
Cissampelos keniensis Y. D. Zhou & Q. F. Wang
No full textE Cissampelos keniensis Y.D.Zhou & Q.F.Wang — Habit: Liana. Habitat: LMWF; 2 000–2 300 m. Distribution: IIIc. Voucher: Kaburia Track, Alt. 2 241 m, 29 Jun. 2016, Zhou & Mbuni 16/14 (HIB, EA, PE). Reference: Zhou et al. (2017b).Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 41, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/655046
Zehneria subcoriacea Y. D. Zhou & Q. F. Wang
No full textZehneria subcoriacea Y.D.Zhou & Q.F.Wang — Habit: Climber. Habitat: LMWF, BZ, UMF; 2 000–3 200 m. Distribution: IIIa. Voucher: Naro Moru Track, near Met. Station, Alt. 3065 m, 27 Jun. 2016, Zhou & Mbuni 16/3 (HIB, EA, PE). Reference: Zhou et al. (2016b).Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 52, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/655046
Medhiama liupanshanensis Zhou & Zhou, sp. n.
No full text2. <i>Medhiama liupanshanensis</i> Zhou & Zhou, sp. n. <p>(Fig. 4 A–H)</p> <p> <b>Type material.</b> Holotype: male, <b>CHINA</b>: <b>Ningxia</b>: <b>JingYuan co.:</b> Liupan Shan: Shanpo Linchang, 2200 m, 06.VII.2008, Zhou Haisheng & Zhao Zongyi collected (IZ-CAS); Paratypes: 1 female, same data as holotype; Xixia Linchang, 1 male, 2100 m, 26.VI.2008, Zhou Haisheng & Zhao Zongyi collected; Erlonghe Linchang, 1 female, 2050 m, 22.VI.2008, Zhou Haisheng & Zhao Zongyi collected (IZ-CAS).</p> <p> <b>Description. Measurement.</b> BL= 5.89 mm, FL= 3.23 mm, HL = 1.08 mm, HW= 0.80 mm, PL= 1.10 mm, PW= 0.70 mm, EL= 0.95 mm, EW= 0.95 mm.</p> <p>Body nearly cylindrical and medium sized. Entirely brown, except legs, apical 1/2 of last antennomere, last segment of maxillary and labial palpi lighter in color.</p> <p> <b>Head</b>. Oblong (HL to HW ratio 1.36), tempora substraight, not widened, posterior angles rounded. Dorsal integument entirely bearing microsculpture composed of shallow polygonal reticulum, and extensively distributed relatively small punctures, puncture intervals not wide, being equal about puncture diameter. Median longitudinal region impunctate, width equals to 4–5 puncture diameters; frontal region with shallow microstriae, and 3 pairs of tiny punctures. Each side of cranium without anterolateral puncture, with midlateral puncture far from dorsal margin of eye (5–6 puncture diameters to eye), temporal puncture rather near lateral margin (at lateral 1/6) and occipital puncture rather near posterior margin (at posterior 1/6). Frontal furrows deep and long, convergent backwards; anteocular furrows indistinct, scarcely observable. Eye quite small and rather flat, diameter not over 1/5 of temporal length (eye: tempora = 0.13: 0.82 mm). Epistoma relatively wide, subrectangular and flat, with a pair of tiny punctures. Distance between antennal insertions 0.24 mm, longer than distance from antenna to eye (0.19 mm).</p> <p> <b>Antennae</b>. Scape stout, thickened apically, much longer than three subsequent antennomeres combined, 0.44 mm; antennomere II elongate, 0.11 mm; III elongate, slightly shorter than II, 0.10 mm; IV and V subequal in length, 0.080 mm; last antennomere of medium length, 0.19 mm, subequal to two preceding antennomeres combined.</p> <p> <b>Mouthparts</b>. Labrum bilobed, with a median longitudinal groove. Maxillary palpus elongate, segment III longest, last segment slender and obconical and shorter than the penultimate. Labial palpus distinctly slender, last segment longest.</p> <p> <b>Neck</b>. Medium width (0.29 mm), nearly 1/3 of head width, with a transverse substraight ridge on anterior 1/3.</p> <p> <b>Pronotum</b>. Relatively shorter (PL to PW ratio 1.57), of same length as head, but narrower. Widest at anterior 1/3, narrowest at posterior 1/3. Anterior angles widely rounded and slightly protruding, lateral margins sinuate from middle, posterior angles rounded. Integument bearing shallow microstriae, and a pair of admedian row of 12–14 punctures, smaller than those on head. Areas outside admedian rows with additional, irregular, sparsely set punctures.</p> <p> <b>Mesoscutellum.</b> Shiny, extensively bearing polygonal reticulum and with a pair of small punctures on apical 1/4.</p> <p> <b>Elytra</b>. Subquadrate (EL to EW ratio 1.0), shorter but distinctly wider than pronotum. Humeri well developed, lateral margins widened posteriorly, hind margin rounded. Integument slightly wrinkled, without microsculpture; each side symmetrically with regular rows of punctures, interspaces between rows 1–2 puncture diameters; deflexed portion of each elytron with 3–4 rows of punctures.</p> <p> <b>Legs</b>. First four segments of protarsi stout, not dilated, those of mesotarsi relatively slender; each last segment as long as the II–IV combined. Protibia with apical ctenidium and subapical ctenidia, meso- and metatibia only with apical ctenidium.</p> <p> <b>Abdomen.</b> Cylindrical, broadest at segment VII. Tergites III–VII shiny, surface entirely covered with a distinct mixture of extensive microstriae and polygonal reticulum; punctures small, sparsely scattered, interspace between them 3–4 puncture diameters, but much denser on tergite VI and VII. Each tergite with median longitudinal impunctate region, width about 3–4 puncture diameters, without distinct basal impression near anterior margin. Surface between two basal transverse carinae of tergites III–VII bearing distinct polygonal reticulum. All abdominal sternites shiny, with microstriae and setiferous punctures as those on tergites.</p> <p> <b>Male</b> (Fig. 4 A–F). Abdominal segment VIII entirely covered with setiferous punctures, posterior margins of tergite VIII and sternite VIII both slightly emarginated (Fig.4 A, B). Tergite IX symmetrical, connected mediobasally. Sternite IX, with long linear-shaped base and rounded in right margin (Fig.4 D). Tergite X symmetrical and broadest at anterior 1/4, anterior 1/4 sharply narrowed and with obtusely rounded apex (Fig.4 C). Aedeagus elliptical and large (Fig. 4 E, F), basal bulb 1.16 mm long. Parameres symmetrical and simple, 0.34 mm and slightly shorter than 1/3 of basal bulb length. Internal sac broadly bag-like, gradually widened and with cellshaped structure in median portion (Fig. 4 E).</p> <p> <b>Female</b> (Fig. 4 G, H). Sternite VIII not distinctly oblong, and posterior margin sharply protruding posteriorly (Fig. 4 G). Genital segment with a large pair of subtriangular supplementary sclerites, and a broad sternite with not distinctly protruding anterior margin (Fig. 4 H).</p> <p> <b>Distribution.</b> China (Ningxia).</p> <p> <b>Etymology</b>. The specific epithet is the Latinized adjective derived from the Chinese name (Pin-yin) of the type locality: Liupan Shan.</p> <p> <b>Remarks.</b> This new species can be easily distinguished from its congeners by the following character combination: sparsely punctate head, emarginated posterior margin of male sternite VIII, special form of sternite IX, tergite X, unique shape of inner sac and a broad sternite with slightly protruding anterior margin in female genital segment.</p>Published as part of <i>Zhou, Yu-Lingzi & Zhou, Hong-Zhang, 2012, Taxonomy of the genus Medhiama Bordoni, 2002 (Coleoptera: Staphylinidae, Staphylininae, Xantholinini) with descriptions of three new species, pp. 169-191 in Zootaxa 3478</i> on pages 175-178, DOI: <a href="http://zenodo.org/record/282239">10.5281/zenodo.282239</a>
Erymus gilvus Zhou & Zhou, sp. n.
No full text1. Erymus gilvus Zhou & Zhou, sp. n. (Fig. 1 A; 3 A–F) Type material. Holotype: male, CHINA: Hainan: Ledong co.: Jianfeng Ling (E 108.8792, N 18.7211), 808 m, 27.III. 2008, Li Liang collector (IZ-CAS); paratypes: CHINA: Hainan: Ledong co.: Jianfeng Ling, one male, 800 m, 16.VII. 2004, Wu Jie & Chen Yongjie collectors; one female, same data as above, except 24.VII. 2004; Guangxi: Xingan co.: Miaoer Shan (E 110.4943, N 25.8810), one male, one female, 06.VII. 1985, Cui Yunqi collector; one female, same data as above, except 30.VI. 1985; one female, same data as above, except 11.VII. 1985; Guangdong: Zhaoqing city: Dihu Shan (E 112.5533, N 23.1714), one male, 150 m, 21.VIII. 2004, Wu Jie & Chen Yongjie collectors (IZ-CAS). Description. Measurements. BL= 3.72 mm, FL= 1.98 mm, HL= 0.57 mm, HW= 0.48 mm, PL= 0. 65 mm, PW= 0.41 mm, EL= 0.67 mm, EW= 0.58 mm. Body nearly cylindrical, small-sized. Body light brown, except head dark brown; antennae, legs and last abdominal segment yellowish. Head (Fig. 1 A). Subrectangular (HL to HW ratio 1.2), tempora slightly arcuate, occasionally dilated posteriorly, posterior angles rounded. Dorsal integument extensively bearing micropunctures, without any microsculpture; median longitudinal region (of the width ≈ 0.15 mm) smooth, without punctures, other surface (posterior half of head and temporal region) with deep, sparsely-scattered, medium sized punctures, distance between punctures about the diameter of 5–6 punctures; each deflexed portion of tempora with two rows of larger and deeper punctures. Each side of cranium with anterolateral puncture near antennal insertion, midlateral puncture adjacent to dorsal margin of eye. Frontal furrows deep and long, fused with two paired tiny punctures, reaching line connecting mid-length of each eye. Anteocular furrows indistinct. Eyes large, distinctly longer than half length of tempora (eye: tempora = 0.19: 0.28 mm), distinctly protruding laterad. Epistoma relatively broad, not narrowed forwards. Distance between antennal insertions 0.13 mm, longer than distance from antenna to eye (0.08 mm). Antennae. Scape stout, thickened apically, subequal to length of three subsequent antennomeres combined, 0.20 mm; antennomere II dilated subapically, 0.10 mm; III spherical and small, much shorter than II, 0.04 mm; IV and V obviously wider than III, subequal in length of 0.05 mm; last antennomere medium in length, 0.13 mm, subequal to length of two preceding antennomeres combined. Neck. Medium width (0.17 mm), slightly wider than 1 / 3 of head width. Pronotum (Fig. 1 A). Subrectangular, distinctly elongate (PL to PW ratio 1.6), longer but narrower than head. Widened anteriad, lateral margins sinuate, anterior angles rounded, posterior angles broadly rounded, with widest at anterior 1 / 3 and narrowest at posterior 1 / 3. Dorsal surface extensively bearing micropunctures, without any microsculpture. Each side bearing a pair of admedian row of 5 larger punctures, a pair of lateral row of 4 punctures, and also with few irregular punctures distributing near anterior margin. Mesoscutellum. Glossy, without any microsculpture, and with a pair of small punctures at apical 1 / 3. Elytra (Fig. 1 A). Subrectangular, elongate (EL to EW ratio 1.2), the same length of pronotum, but distinctly wider. Humeri well-developed, lateral margins distinctly dilated outwards, hind margin distinctly rounded. Integument glossy, flattened, without microsculpture, each side with 2–3 rows of small punctures along median suture, a row along midwidth, and also with 1–2 rows of tiny punctures on deflexed portion. Abdomen. Cylindrical, broadest at segment VI. Tergites III–VII glossy, each segment covered with shallow transverse microstriae, also with small scattered punctures, interspaces between punctures near 2–3 punctures’ diameter, and punctures denser on tergites VI and VII. Each tergite with a shallow basal impression near anterior margin; surface between two basal transverse carinae glossy, covered with polygonal reticulum, and without punctures. All abdominal sternites glossy, with microstriae and punctures as those on tergites. Male (Fig. 3 A–F). Abdominal segment VIII entirely covered with setiferous punctures, posterior margin of both tergite and sternite subtruncated (Fig. 3 A, B). Tergite IX symmetrical, connected mediobasally. Sternite IX asymmetrical, lateral margins arcuate, with linear-shaped base and rounded apex (Fig. 3 C). Tergite X symmetrical, subrhomboidal, with elongate base and rounded apex (Fig. 3 D). Aedeagus elliptical, anterior portion missing, apical margin slightly emarginated (Fig. 3 E–F), bulbus very small, 0.22 mm long. Parameres symmetrical and quite elongate, 0.27 mm, with paired inner process at basal 1 / 3. Internal sac entirely membranous and variably shaped, without any visible sclerotized structures. Distribution. China (Guangxi, Guangdong, Hainan). Etymology. The specific epithet is derived from the Latin words “ gilv ” (light yellow), and refers to the body coloration. Remarks. Based on the long parameres, the new species is similar to E. gracilis (Fauvel, 1895). But it can be distinguished from the latter by paler body color, more sparsely-scattered punctures on head, a process on each paramere, and by the distinctly narrower tergite X.Published as part of Zhou, Yu-Lingzi & Zhou, Hong-Zhang, 2014, Taxonomy of the genus Erymus Bordoni (Coleoptera: Staphylinidae, Staphylininae, Xantholinini) in China with descriptions of two new species, pp. 521-536 in Zootaxa 3814 (4) on pages 523-527, DOI: 10.11646/zootaxa.3814.4.5, http://zenodo.org/record/22488
Diochus ampullaceus Zhou & Zhou, 2016, sp. nov.
No full text2. Diochus ampullaceus sp. nov. (Fig. 3 D; Fig. 5 A–P; Fig. 5 - 1 A–J) Type material. Holotype: male, CHINA: Guangxi: Napo co., Defushuiyuanlin Nature Reserve (E 105.7965 °, N 23.3148 °), 1400 m, 0 4. IV. 1998, Zhou Haisheng collected (IZ-CAS). Paratypes: Guangxi: Napo co., Defushuiyuanlin Nature Reserve (E 105.7965 °, N 23.3148 °), 3 males, 4 females, 1400 m, 0 4. IV. 1998, Zhou Haisheng collected (IZ-CAS). Description. Measurement (n= 5). BL= (4.2–4.3) mm, FL= (2.1–2.2) mm, HL= (0.5–0.6) mm, HW= (0.4– 0.5) mm, PL= (0.7–0.8) mm, PW= (0.6–0.7) mm, EL= (0.6–0.7) mm, EW= (0.8–0.9) mm. Body nearly fusiform shaped, medium sized (Fig. 3 D). Body dark brown, abdominal intersegmental membrane yellowish brown. Legs entirely brown, except tarsi lighter. Antennae light brown. Maxillary and labial palpi yellowish brown. Head (Fig. 5 A, D). Rounded triangular in shape (HL to HW ratio 1.23), tempora (behind eyes) distinctly widened backwards, posterior angles rounded. Dorsal integument shiny, extensively bearing microstriae, without punctures around each eye, but bearing scattered smaller punctures on deflexed portion of tempus and near the posterior margin. Each side of cranium with characteristic punctures: one frontal puncture on frontal region, two anterolateral punctures near antennal insertion, three lateral punctures near dorsal margin of eye, also with occipital puncture at the basal 1 / 4, but temporal puncture unidentified; besides, disc surface bearing two additional paired punctures. Frontal furrows and anteocular furrows absent, a small round elevation present between eyes. Eye medium sized, distinctly protruding laterad, longitudinal diameter slightly shorter than half the length of tempora (eye: tempora = 0.16: 0.34 mm). Epistoma not flattened, abruptly oblique, anterior margin emarginate medially. Distance between antennal insertions 0.17 mm being distinctly longer than distance from antenna to eye (0.09 mm). Ventral surface (Fig. 5 D) with scattered punctures, interspaces between them over 4 punctures’ diameter. Gular sutures deep, gradually convergent, but not confluent, then divergent to neck region. Antennae (Fig. 5 G). Total length 1.2 mm. Scape rod-shaped, slightly thickened apically, 0.17 mm, shorter than two subsequent antennomeres combined; antennomere II elongate, 0.12 mm; III 0.13 mm, slightly longer than II; IV 0.09 mm, IV–X becoming shortened in length; XI 0.14 mm, distinctly longer than X. Mouthparts (Fig. 5 H–J). Labrum not transverse, nearly pentagon; lateral margin straight, not in waved shape; anterior margin distinctly shorter than lateral margins (Fig. 5 H). Mandibles falciform, left one with one sharp tooth on inner edge, right one without tooth (Fig. 5 I–J). Neck (Fig. 5 K–L). Cylindrical, shiny, first half of dorsal surface depressed, with a distinct groove (Fig. 5 K); only bearing shallow microsculpture, width of 0.17 mm, slightly wider than 1 / 3 width of head. Ventral surface with gular sutures to form obvious triangular region, with deep transverse median furrow (Fig. 4 L). Prothorax (Fig. 5 B, E). Pronotum elliptical (PL to PW ratio 1.09), wider and longer than head. Anterior region near anterior angles deflexed, lateral margins paralleled, not widened from anterior angles to the middle, also not convergent backwards, anterior and posterior angles broadly rounded. Dorsal surface glossy extensively with micropunctures, but without any microsculpture. Each side of the midline with symmetrical five large lateral punctures, with additional 13–15 punctures near each margins (including anterior, lateral and posterior margins). Prosternum bearing an observable transverse ridge between basisternum and furcasternum, angularly backwards (Fig. 5 E). Pterothorax (Fig. 5 F, N). Mesoscutellum slightly sharp triangular and small (Fig. 5 N), surface shiny, bearing some light microstriae, but without any punctures. The transverse ridge on mesoventrites substraight (Fig. 5 F); the longitudinal ridge distinct; the paired oblique furrows not distinct; the carina (limiting mesocoxal cavity) possessing wave-shaped median part. The discrimen region on metaventrite distinctly elevated. Elytra (Fig. 5 C). Transverse and short (EL to EW ratio 0.81), shorter and wider than pronotum. Humeri well developed, lateral margins divergent posteriorly, hind margin not rounded, but obliquely truncate. Dorsal integument shiny, flattened, without microsculpture; each elytron with a row of 5 punctures along suture, a row of 5 punctures in median, also with 4–5 rows of punctures on deflexed portion. Legs (Fig. 5 M). First four segments of protarsi stout, wider than those of meso- and metatarsi slender. Last segment of protarsi longer than II–IV together; that of meso- as long as II and III together; that of meta- longer than II and III together. Abdomen (Fig. 5 O). Broadest at segment V. Tergites III–VII covered with dense and obvious transverse microstriae; each tergite with dense and brown pubescence, posterior margin of III–VI without darker and coarser setae. Tergites III–VII with a basal impression near anterior margin, respectively, each one only possessing one basal transverse carina; surface shiny, without any punctures or microsculpture. Tergite VII possessing a transparent palisade fringe on posterior margin. All abdominal sternites shiny, with microstriae and punctures as those on tergites. Male (Fig. 5 - 1 A–G). Posterior margin of tergite VIII arcuate backwards (Fig. 5 - 1 A), that of sternite VIII distinctly bisinuate (Fig. 5 - 1 B). Tergite IX symmetrical, connected mediobasally, sharpened apically. Sternite IX symmetrical, widest near the apical 1 / 3, basal margin deeply emarginate, apical margin nearly subtruncate (Fig. 5 - 1 D). Tergite X symmetrical, in reverse trapezoidal shape (Fig. 5 - 1 C). Aedeagus large sized and bottle-shaped (Fig. 5 E, F), ca. 0.8 mm long, ventral surface normally sclerotized, with part membrane; dorsal surface fully membranous. Parameres symmetrical and soft, extraordinarily thin and long, rolled from ventral to dorsal side (Fig. 5 - 1 E, F). Internal sac membranous, without sclerotized structures. Sperm pump folded basally, spiral toward apex (Fig. 5 - 1 G). Female (Fig. 5 - 1 H–J). Tergite IX bearing numerous setae, elongate and sharply pointed apically. Sternite IX symmetrical, each integrated, and with a deep concaved margin in the middle (Fig. 5 - 1 H). Tergite X broad, basal margin curved (Fig. 5 - 1 I). Sternite X missing. Tube of spermatheca short, with an apical circle (Fig. 5 - 1 J). Distribution. Guangxi. Etymology. The specific epithet is derived from the Latin word “ ampullaceus ” (a flask swelled in middle) and refers to the bottle-shaped aedeagus. Remarks. Although this new species is similar in the round elevation between the eyes to D. pulchellus Cameron, it can be easily recognized by the dilated protarsi. This new species is distinguished from its congeners by the combination of the following characters: 1) sparsely distributed punctures on head; 2) different number of mandible teeth; 3) neck with both a dorsal and ventral groove; 4) transverse elytra; 5) aedeagus large sized and bottle-shaped (Fig. 5 E, F); parameres symmetrical and soft, extraordinarily thin and long, curving from ventral to dorsal side (Fig. 5 - 1 E, F).Published as part of Zhou, Yu-Lingzi & Zhou, Hong-Zhang, 2016, Taxonomy of the genus Diochus Erichson, 1839 (Coleoptera: Staphylinidae, Staphylininae, Diochini) in China with descriptions of four new species, pp. 1-30 in Zootaxa 4127 (1) on pages 10-13, DOI: 10.11646/zootaxa.4127.1.1, http://zenodo.org/record/25826
Megalinus liupanshanensis Zhou & Zhou, sp. nov.
No full textMegalinus liupanshanensis Zhou & Zhou, sp. nov. (Fig. 3A–F; Fig. 3-1A–F) Type material. Holotype: male, CHINA: Ningxia: Liu panshan: Heshangpulinchang (E 106.2462, N 35.6761), 2100 m, 04.VII. 2008, Rou Qiaozhe collected (IZ-CAS). Description Measurements. BL= 10.5 mm, FL= 5.1 mm, HL= 1.5 mm, HW= 1.4 mm, PL= 1.7 mm, PW= 1.3 mm, EL= 1.7 mm, EW= 1.6 mm. Body cylindrical (Fig. 3D), large sized. Body dark brown, except elytra reddish. Apical 1/3 of last antennomere yellowish brown. Maxillary and labial palpi brown. Head (Fig. 3A). Subquadrated (HL to HW ratio 1.1), temple obviously widened posteriorly, posterior angles rounded. Dorsal integument shiny, without microsculpture, but with extensive micropunctures, also distributed with round, medium-sized punctures, interspaces between punctures 1–2 punctures’ diameter, except impunctate medial longitudinal band (width ca. 0.25 mm). Each side of cranium also with frontal puncture on epistoma, anterolateral puncture near antennal insertion, midlateral puncture approximately a distance of 6–7 punctures’ diameter from dorsal margin of eye, temporal puncture near lateral margin, and occipital puncture near posterior margin; deflexed portion of head bearing 2–3 rows of small punctures. Frontal furrows convergent, deeper than anteocular furrows, but of same length; anteocular furrows long, arriving line connecting rearmost of each eye. Eye of medium size, slightly longer than 1/3 of temporal length (eye: temple = 0.33: 0.93 mm), slightly protruding laterad. Epistoma protruding forwards, of subrectangular shape, anterior margin subtruncated. Distance between antennal insertions 0.36 mm, equal to that from antenna to eye (0.36 mm). Antennae. Scape stout, thickened apically, longer than three subsequent antennomeres combined, 0.69 mm; antennomere II elongate, slightly dilated subapically, 0.18 mm, equal to III; III elongate, 0.18 mm; IV and V transverse, subequal in length, 0.09 mm; last antennomere of medium length, 0.24 mm, subequal to preceding two antennomeres combined. Neck. Medium width (0.57 mm), slightly wider than 1/3 of head width. Pronotum (Fig. 3B). Subrectangular, distinctly elongated (PL to PW ratio 1.4), longer than head, but slightly narrower. Obviously widened anteriad, lateral margins convergent backwards, anterior angles protruding and slightly angulated, posterior angles broadly rounded. Integument shiny, extensively bearing micropunctures, but without microsculpture. Two rows of setiferous punctures presenting on each side, admedian row consisting of 11– 13 punctures; lateral row, curvedly arranged, of 12–13 punctures; other irregular punctures scattered near anterior margin. Mesoscutellum. Shiny, extensively covered with distinct microstriae, and with several small, irregular punctures. Elytra (Fig. 3C). Subquadrated (EL to EW ratio 1.1), obviously wider than pronotum, but of same length. Humeri well developed, lateral margins widened posteriorly, hind margin subtruncated. Integument shiny and flattened, without microsculpture; each elytron with 8–9 rows of medium-sized punctures; deflexed portion with 5– 6 rows of smaller punctures. Abdomen. Cylindrical, broadest at segment VI. Tergites III–VII shiny, covered with superficial transverse microstriae and small setiferous punctures, interspaces between punctures near 1–2 punctures’ diameter, denser laterobasally; each tergite with basal impression, which impunctate, but bearing distinct polygonal reticulum. Surface between two basal transverse carinae impunctate, but bearing distinct polygonal reticulum. All abdominal sternites shiny, with microsculpture and setiferous punctures as those on tergites. Male. Abdominal segment VIII entirely covered with setiferous punctures, except a narrow medial longitudinal impunctate band; posterior margins of tergite VIII slightly emarginated or subtruncated (Fig. 3-1A), that of sternite VIII subtruncated (Fig. 3-1B). Tergite IX symmetrical, connected mediobasally. Sternite IX, with sharp base and broadly arcuate posterior margin (Fig. 3-1C). Tergite X symmetrical and narrow, with slightly rounded base and broadly emarginated posterior margin, in situ broadly exposed between tergite IX (Fig. 3-1D). Median lobe of aedeagus rather oblong, large sized (Fig. 3E, F; Fig. 3-1E, F), basal piece with transparent, membranous medial-longitudinal band, anterior portion subcylindrical, 0.26 mm; basal bulb 1.13 mm long. Parameres symmetrical, elongate, slightly longer than 1/3 of basal bulb. Internal sac of S-shaped and densely spinulate. Female. Unknown. Distribution. China (Ningxia). Etymology. The specific epithet is named after the Chinese name (Pin-Yin) of the name of type locality. Remarks. This species could be distinguished from its congeners by: 1) body large sized, elytra reddish; 2) lateral margins of pronotum convergent backwards; 3) admedian row of pronotum consisting of 11–13 punctures and lateral row, curvedly arranged, of 12–13 punctures; 4) tergites III–VII covered with superficial transverse microstriae; 5) posterior margins of tergite VIII slightly emarginated or subtruncated; 6) tergite X symmetrical and narrow, with rounded base and broadly arcuate posterior margin; 7) median lobe of aedeagus rather oblong; 8) basal piece with transparent, membranous medial-longitudinal band; 9) internal sac S-shaped and densely spinulate.Published as part of ZHOU, YU-LINGZI, BORDONI, ARNALDO & ZHOU, HONG-ZHANG, 2013, Taxonomy of the genus Megalinus Mulsant & Rey (Coleoptera: Staphylinidae, Xantholinini) and seven new species from China, pp. 1-66 in Zootaxa 3727 (1) on pages 14-17, DOI: 10.11646/zootaxa.3727.1.
Medhiama xiaolongmenensis Zhou & Zhou, sp. n.
No full text1. Medhiama xiaolongmenensis Zhou & Zhou, sp. n. (Fig. 3 A–H) Type material. Holotype: male, CHINA: Beijing: Mentougou District: Xiaolongmen, 1600 m, 03.VII. 1998, Zhou Haisheng collected (IZ-CAS); Paratypes: 2 males, 11 females, same data as holotype; Sichuan: Baoxing co.: Longdong town, Ganyang Gou, 1 male, 5 females, 1796 m, 12.VIII. 2003, Wu Jie collected; same locality, 1 female, 1795 m, 12.VIII. 2003, Yu Xiongdong collected; Puji Gou, 1 female, 2180 m, 14.VIII. 2003, Yu Xiaodong & Peng Xuewei collected (IZ-CAS). Description. Measurement. BL= 6.75 mm, FL= 3.52 mm, HL= 1.16 mm, HW= 0.86 mm, PL= 1.20 mm, PW= 0.74 mm, EL= 1.05 mm, EW= 1.05 mm. Body nearly cylindrical and medium sized. Entirely dark brown. Legs brown. Antennae dark brown, apical half of last antennomere lighter in color. Maxillary and labial palpi dark brown. Head. Oblong (HL to HW ratio 1.36), tempora widened posteriorly, posterior angles widely rounded. Dorsal integument entirely bearing microsculpture composed of distinct polygonal reticulum, and extensively distributed deep and medium sized punctures, puncture intervals rather narrow, about 1 / 2 puncture diameter. Median longitudinal region impunctate, width equals to 2–3 puncture diameters; frontal region with distinct transverse microstriae, and 3 pairs of tiny punctures. Each side of cranium without anterolateral puncture, but with midlateral puncture far from dorsal margin of eye (5–6 puncture diameters to eye), temporal puncture rather near lateral margin (at lateral 1 / 6) and occipital puncture rather near posterior margin (at posterior 1 / 6). Frontal furrows deep and long, convergent backwards; anteocular furrows indistinct, scarcely observable. Eye of small size and flat, diameter nearly 1 / 4 of temporal length (eye: tempora = 0.19: 0.76 mm). Epistoma relatively wide, subrectangular and flat, with a pair of tiny punctures. Distance between antennal insertions 0.23 mm, subequal to distance from antenna to eye (0.21 mm). Antennae. Scape stout, thickened apically, much longer than three subsequent antennomeres combined, 0.44 mm; antennomere II slightly elongate or subglobular, 0.10 mm; III elongate, slightly longer than II, 0.11 mm; IV and V subequal in length, 0.09 mm; last antennomere of medium length, 0.19 mm, subequal to two preceding antennomeres combined. Mouthparts. Labrum bilobed and relatively long, with a median longitudinal groove. Maxillary palpus elongate, segment III longest, last segment slender and obconical and shorter than the penultimate. Labial palpus distinctly slender, last segment longest. Neck. Medium width (0.30 mm), nearly 1 / 3 of head width, with a transverse substraight ridge on anterior 1 / 3. Pronotum. Distinctly elongate (PL to PW ratio 1.62), of same length as head, but narrower. Widest at anterior 1 / 3, narrowest at posterior 1 / 3. Anterior angles widely rounded, not protruding, lateral margins sinuate from middle, posterior angles rounded. Integument bearing distinct transverse microstriae, and a pair of admedian row of 12–14 punctures, smaller than those on head. Areas outside admedian rows with additional, irregular, sparsely set punctures. Mesoscutellum. Shiny, extensively bearing polygonal reticulum and with a pair of small punctures on apical 1 / 4. Elytra. Subquadrate (EL to EW ratio 1.0), shorter but distinctly wider than pronotum. Humeri well developed, lateral margins widened posteriorly, hind margin rounded. Integument slightly wrinkled, without microsculpture; each side symmetrically with regular rows of punctures, interspaces between rows 1–2 puncture diameters; deflexed portion of each elytron with 3–4 rows of punctures. Legs. First four segments stout but not dilated in protarsi and metatarsi, whereas relatively slender in mesotarsi; each last segment as long as the II–IV combined. Protibia with apical ctenidium and subapical ctenidia, meso- and metatibia only with apical ctenidium. Abdomen. Cylindrical, broadest at segment VII. Tergites III–VII shiny, surface entirely covered with observable transverse microstriae, also with denser polygonal reticulum near anterior margin; punctures small, sparsely scattered, interspace between them approximately 3–4 puncture diameters, but much denser on tergites VII and VIII. Each tergite without distinct basal impression near anterior margin. Surface between two basal transverse carinae of tergites III–VII bearing distinct polygonal reticulum. All abdominal sternites shiny, with microstriae and setiferous punctures as those on tergites. Male (Fig. 3 A–F). Abdominal segment VIII entirely covered with setiferous punctures, posterior margin of tergite VIII subtruncated, that of sternite VIII sharply protruding posteriorly (Fig. 3 A, B). Tergite IX symmetrical, connected mediobasally. Sternite IX, with long linear-shaped base and sharp apex (Fig. 3 D). Tergite X symmetrical, broadest at anterior 1 / 3, lateral margins quite expanded outwards (Fig. 3 C). Aedeagus of irregular shape and small in size (Fig. 3 E, F), basal bulb 0.48 mm long. Parameres asymmetrical and foot-shaped, right one obviously larger than left one in dorsal view (Fig. 3 F), base distinctly darker; large sized, 0.40 mm long and subequal to 4 / 5 of basal bulb length. Internal sac located outside basal bulb, brown and soft, without distinct spines (Fig. 3 E). Female (Fig. 3 G, H). Sternite VIII not distinctly oblong, and posterior margin protruding medially (Fig. 3 G). Genital segment with pair of subtriangular supplementary sclerites and broad sternite with distinctly protruding anterior margin (Fig. 3 H). Distribution. China (Beijing, Sichuan). Etymology. The specific epithet is derived from the Chinese name (Pin-yin) of the type locality, Xiaolongmen. Remarks. This new species could be distinguished from its congeners by the following character combination: in male by widened anterior angles of pronotum, protruding posterior margin of male sternite VIII, distinctive shape of sternite IX, tergite X, asymmetrical parameres, unique form of inner sac, and in female by broad sternite of genital segment with a distinctly protruding anterior margin. This is the second species of the genus with asymmetrical parameres (the other being M. puetzi Bordoni, 2003), and the two could be distinguished from each other by different shapes of sternite IX, tergite X and aedeagi. The new species also shared similar foot-shaped parameres with M. schawalleri Bordoni, but the pronotum widened distinctly near anterior angles, punctures on abdomen more densely distributed, and tergite X more outwardly expanded.Published as part of Zhou, Yu-Lingzi & Zhou, Hong-Zhang, 2012, Taxonomy of the genus Medhiama Bordoni, 2002 (Coleoptera: Staphylinidae, Staphylininae, Xantholinini) with descriptions of three new species, pp. 169-191 in Zootaxa 3478 on pages 173-175, DOI: 10.5281/zenodo.28223
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