2,896 research outputs found
HW-Flow: A Multi-Abstraction Level HW-CNN Codesign Pruning Methodology
No full textConvolutional neural networks (CNNs) have produced unprecedented accuracy for many computer vision problems in the recent past. In power and compute-constrained embedded platforms, deploying modern CNNs can present many challenges. Most CNN architectures do not run in real-time due to the high number of computational operations involved during the inference phase. This emphasizes the role of CNN optimization techniques in early design space exploration. To estimate their efficacy in satisfying the target constraints, existing techniques are either hardware (HW) agnostic, pseudo-HW-aware by considering parameter and operation counts, or HW-aware through inflexible hardware-in-the-loop (HIL) setups. In this work, we introduce HW-Flow, a framework for optimizing and exploring CNN models based on three levels of hardware abstraction: Coarse, Mid and Fine. Through these levels, CNN design and optimization can be iteratively refined towards efficient execution on the target hardware platform. We present HW-Flow in the context of CNN pruning by augmenting a reinforcement learning agent with key metrics to understand the influence of its pruning actions on the inference hardware. With 2× reduction in energy and latency, we prune ResNet56, ResNet50, and DeepLabv3 with minimal accuracy degradation on the CIFAR-10, ImageNet, and CityScapes datasets, respectively
Rhyncocheilus gonggashanus Tang, Schillhammer & Zhao 2021, sp. n.
No full textRhyncocheilus gonggashanus Tang, Schillhammer & Zhao sp. n. (Figs. 9, 10, 25–27, 50–53) Rhyncocheilus griseosericans; Schillhammer, 2012: 199 (partim). Type material. Holotype. China: Sichuan: ³, glued on a card with labels as follows: “ China: Sichuan Prov., Mt. Gonggashan, Hailuogou, Qingshibangou, alt. 2300 m, 15.VII.2011, Huang Hao leg.” “ Holotype / Rhyncocheilus gonggashanus / Tang, Schillhammer & Zhao” [red handwritten label] (SHNU). Paratypes. 1♀, same data as for the holotype (SHNU); 1³, same locality, alt. 1900–2000 m, 26.VII.2006, Hu & Tang leg. (SHNU); 1³ 1♀, 40 km S Luding, Moxi village, Hailuogou glacier park, Gongga Shan, 2000–3200 m, 14–20.VIII.1995, J. Schneider leg. (CSS, NMW). Description. Measurements of male: BL: 18.0 mm, FL: 11.3–12.1 mm, HL: 2.89–3.17 mm, HW: 2.84–3.03 mm, EYL: 1.06 mm, TL: 1.28–1.56 mm, PL: 2.78 mm, PW: 2.78–2.84 mm, EL: 4.78–5.23 mm, EW: 5.00– 5.28 mm. HW/HL: 0.96–0.98, TL/EYL: 1.21–1.47, PL/PW: 0.98–1.00, EL/EW: 0.96–0.99. Measurements of female: BL: 24.6 mm, FL: 14.0 mm, HL: 3.67 mm, HW: 3.39 mm, EYL: 1.11 mm, TL: 1.95 mm, PL: 3.34 mm, PW: 3.56 mm, EL: 5.73 mm, EW: 6.56 mm. HW/HL: 0.92, TL/EYL: 1.75, PL/PW: 0.94, EL/ EW: 0.87. The new species is extremely similar in appearance to Rhyncocheilus griseosericans (Fairmaire, 1894), and the external characters have been described in the redescription part of R. griseosericans (page 199 in Schillhammer, 2012). Therefore, only a few diagnostic characters of the new species versus R. griseosericans need to be mentioned here: median basal portion of head is more convex than that of R. griseosericans; surface of labrum (Fig. 27) with more setae than that of R. griseosericans; silvery pubescent patch of elytra longer than that of R. griseosericans; silvery pubescent patch of abdominal tergite VII longer than that of R. griseosericans. Male. Head (Fig. 25) with posterior angles less prominent; sternites VII and VIII emarginate in the middle of posterior margin; aedeagus (Figs 50, 51) with median lobe similar to that of R. griseosericans, but apicolateral projection more prominent (Fig. 52); paramere slightly shorter than median lobe, slenderer than in R. griseosericans, apex rounded, inner side of apical portion densely covered with peg setae (Fig. 53), which are distinctly less numerous than in R. griseosericans. Female. Head (Fig. 26) with posterior angles more prominent; sternites VII and VIII with posterior margin en- tire. The silvery pubescent patch of elytra is somewhat shorter than that of males: a larger humeral portion remains uncovered by the silvery pubescence. Whether this is variability or sexual dimorphism cannot be judged based on the small number of specimens presently available. Distribution. China (Sichuan). Diagnosis. The differences between R. griseosericans and the new species have been mentioned above. The new species is also similar to R. sommersgutteri, Schillhammer, 2004 from Sichuan, but it may be distinguished from the latter by the darker body color, the more extensive silvery pubescent patch of abdominal tergite VII and the different shape of the aedeagus. Etymology. This specific name is derived from the type locality of the new species.Published as part of Tang, Liang, Schillhammer, Harald & Zhao, Xin, 2021, Notes on the genus Rhyncocheilus in China (Coleoptera, Staphylinidae Staphylininae) with descriptions of three new species, pp. 99-112 in Zootaxa 4948 (1) on pages 104-108, DOI: 10.11646/zootaxa.4948.1.5, http://zenodo.org/record/461617
Sphaerobulbus ningliei Zhao & Tang 2020, sp. nov.
No full textSphaerobulbus ningliei sp. nov. (Figs 5, 6, 19–23) Type material. HƟĿƟŦYPൾ: CHINA: YUNNAN: ³, glued on a card with labels as follows: “China: Yunnan Prov. Binchuan County, Jizu Shan, 25°57′41.76″N 100°23′36.38″E, alt. 3000 m, 16. VII.2010, Liang Tang leg.” “ Holotype / Sphaerobulbus ningliei / Zhao & Tang” [red handwritten label] (SHNU). Description. Measurements of male: BL: 14.2 mm, FL: 7.7 mm. HL: 2.06 mm, HW: 2.18 mm, EYL: 0.59 mm, TL: 1.00 mm, PL: 2.88 mm, PW: 2.55 mm, EL: 2.89 mm, EW: 2.95 mm. HW/HL: 1.05, TL/EYL: 1.69, PL/PW: 1.13, EL/EW: 0.98. Body entirely blackish with metallic blue tint,appendages reddish except mid and hind coxae darker. Head 1.05 times as wide as long, rounded quadrangular, posterior angles entirely rounded, tempora longer than eyes (ratio 1.69), disc with punctation well delimited on middle portion and more or less confluent on lateral portions, posterior half of head with impunctate midline, interstices densely reticulated, about equal to diameter of punctures on midanterior portion and mostly narrower than half diameter of punctures on the remaining portions. Pronotum 1.13 times as long as wide, widest at about basal third, disc with complete impunctate midline, punctation confluent, interstices reticulated, narrower than half diameter of punctures; scutellum with black pubescence, finely and densely punctate. Elytra 0.98 times as long as wide and as long as pronotum; punctation fine and dense, interstices slightly dull with coarse granulose microsculpture. Abdomen semi-cylindrical, posterior margin of tergite VII with palisade fringe; posterior basal line of abdominal tergites III–V distinctly bisinuate, median impression after posterior basal line relatively shallow; punctation dense and fine, interstices reticulated. Male. Sternite VIII emarginate at middle of posterior margin; sternite IX (Fig. 19) emarginate medioapically; tergite X(Fig. 20) subtriangular with apex obtusely pointed. Aedeagus (Fig. 21) with median lobe asymmetrical, apical portion hook-like and pointing to left side in ventral view, paramere slightly asymmetrical, slightly shorter than median lobe, underside of paramere (Figs 22, 23) with a few sensory peg seta in apical portion and one degenerated sensory peg seta at middle of subapical portion. Female. Unknown. Differential diagnosis. The new species is similar to S. cardinalis Smetana, 2010 from Sichuan and Yunnan, but can be distinguished from the latter by the posterior angles of the head being rounded (slightly prominent in S. cardinalis), the posterior half of the head with the impunctate midline broad (narrow in S. cardinalis), the apical portion of the aedeagal median lobe hook-like, and the underside of the paramere with sparser sensory peg setae. Both species seem to differ also in the degree of metallic tint in some cases (compare Figs 5 and 26), but this character seems to be variable in S. cardinalis which can also exhibit a bluish-purple tint (A. Smetana, pers. comm. 2020) and the coloration is hence not useful as a diagnostic character. The new species is also a little similar to S. smetanai described above in coloration, but it can be distinguished by the head with an impunctate midline, the elytra distinctly longer, and the abdomen distinctly darker in coloration. Etymology. This species is named in honor of Mr. Lie Ning who accompanied the second author during the collecting trip. Distribution. China (Yunnan).Published as part of Zhao, Xin & Tang, Liang, 2020, Three new species of the genus Sphaerobulbus from China (Coleoptera: Staphylinidae), pp. 333-341 in Acta Entomologica Musei Nationalis Pragae 60 (1) on pages 337-338, DOI: 10.37520/aemnp.2020.019, http://zenodo.org/record/387994
Lathrobium chengi Zhao & Peng, 2021, new species
No full textLathrobium chengi Q.-H. Zhao and Peng, new species (Figs 1A, 2) Type material. HOLOTYPE: ♂, labeled ‘ China: Zhejiang Prov., Jingning County, Wangdongyang, 29°14'53''N 118°07'03''E, 1305 m, 17.VIII.2018, Cheng & Miao leg.’ (SNUC). Paratypes: 1 ♂, 2 ♀♀, same label data as holotype (SNUC). Description. Measurements (in mm) and ratios: BL 8.95–9.12, FL 4.44–4.51, HL 1.14–1.16, HW 1.25–1.27, AnL 2.37–2.45, PL 1.60–1.65, PW 1.32–1.37, EL 0.91–0.96, AL 1.60–1.67, HL/HW 0.90–0.91, HW/PW 0.93–0.94, HL/PL 0.70–0.71, PL/PW 1.20–1.21, EL/PL 0.56–0.58. Habitus as in Fig. 1A. Body dark brown with paler apex, legs brown, antennae brown to light brown. Head: punctation moderately coarse and sparse, somewhat sparser in median dorsal portion; interstices with distinct microsculpture. Eyes moderately small and composed of approximately 70 ommatidia. Pronotum parallel-sided; punctation somewhat sparser than that of head; impunctate midline broad; interstices without microsculpture. Elytral punctation fine and moderately dense. Hind wings completely reduced. Protarsi with distinct sexual dimorphism. Abdomen with fine and moderately dense punctation, that of tergite VII somewhat sparser than that of anterior tergites; interstices with shallow, but distinct microsculpture; posterior margin of tergite VII without palisade fringe; tergite VIII with weakly pronounced sexual dimorphism. Male. Posterior margin of tergite VIII (Fig. 2D) nearly truncate; sternites III–IV unmodified; sternites III–IV unmodified; sternite V (Fig. 2A) with dark stout setae in large postero-median impression and at middle of posterior margin with cluster of numerous point-like setae; sternite VI (Fig. 2B) similar to sternite V, but with larger posteromedian impression and without point-like setae posteriorly; sternite VII (Fig. 2C) strongly transverse, without modified setae, posterior margin broadly concave; sternite VIII (Fig. 2E) transverse and nearly symmetric, with moderately extensive median impression posteriorly, this impression with numerous distinctly modified, stout blackish setae, posterior excision deeply concave; aedeagus as in Figs 2F–H; ventral process apically acute; dorsal plate with large apical portion and short basal portion; internal sac with three sclerotized spines of different shapes. Female. Posterior margin of tergite VIII weakly convex; posterior margin of sternite VIII convexly produced. Comparative notes. It resembles L. songi Peng & Q.-L. Li, 2015 from Baishanzu in Zhejiang in body size, the chaetotaxy of the male sternite VII, and the presence of three sclerotized spines in the internal sac of the aedeagus. Lathrobium chengi is distinguished from L. songi by the the chaetotaxy of the male sternite IV–VI, the deeper posterior excision of the male sternite VIII, the more slender ventral process of the aedeagus. For illustrations of L. songi see Peng et al. (2015: figures 6A, 7). Distribution and natural history. The type locality is situated in aofoyan to the south of Jiangshan, southwestern Zhejiang. The specimens were sifted from leaf litter in a secondary pine forest at an altitude of 547 m. Etymology. This species is dedicated to Mr. Zhi-Fei Cheng, who collected some of type specimens.Published as part of Zhao, Qing-Hao & Peng, Zhong, 2021, New species and new records of the genus Lathrobium Gravenhorst (Coleoptera Staphylinidae: Paederinae) from Zhejiang, East China, pp. 172-181 in Zootaxa 4990 (1) on page 173, DOI: 10.11646/zootaxa.4990.1.11, http://zenodo.org/record/498258
Lathrobium miaoi Zhao & Peng, 2021, new species
No full textLathrobium miaoi Q.-H. Zhao and Peng, new species (Figs 1B, 3) Type material. HOLOTYPE: ♂, labeled ‘ China: Zhejiang Prov., Jiangshan County, Shuangxikou town, laofoyan, 28°19'40''N 118°40'37''E, 547 m, 11.VIII.2018, Cheng & Miao leg.’ (SNUC). Paratypes: 3 ♂♂, 7 ♀♀, same label data as holotype (SNUC). Description. Measurements (in mm) and ratios: BL 8.04–8.42, FL 4.41–4.68, HL 1.24–1.28, HW 1.33–1.37, AnL 2.35–2.47, PL 1.66–1.76, PW 1.46–1.51, EL 0.97–1.09, AL 1.47–1.53, HL/HW 0.93–0.94, HW/PW 0.90–0.91, HL/PL 0.72–0.75, PL/PW 1.13–1.17, EL/PL 0.58–0.62. Habitus as in Fig. 1B. Body dark brown, legs brown, antennae dark brown to light brown. Head: punctation coarse and sparse, distinctly sparser in median dorsal portion; interstices with shallow microreticulation. Eyes moderately small and composed of approximately 60 ommatidia. Pronotum with weakly convex lateral margins in dorsal view; punctation similar to that of head; impunctate midline broad; interstices glossy and without microsculpture. Elytral punctation dense and defined. Hind wings completely reduced. Protarsi without appreciable sexual dimorphism, distinctly dilated. Abdomen with fine and dense punctation, that of tergite VII sparser than that of anterior tergites; interstices with shallow microsculpture; posterior margin of tergite VII without palisade fringe; tergite VIII with distinct sexual dimorphism. Male. Posterior margin of tergite VIII (Fig. 3D) weakly convex; sternites III–IV unmodified; sternite V (Fig. 3A) with dense dark setae in very large postero-median impression and at middle of posterior margin with cluster of numerous point-like setae; sternite VI (Fig. 3B) similar to sternite V, but with larger postero-median impression; sternite VII (Fig. 3C) strongly transverse, with shallow median impression posteriorly, this impression with short blackish setae, posterior margin weakly concave in the middle; sternite VIII (Fig. 2G) with moderately asymmetric and extensive median impression posteriorly, this impression with numerous distinctly modified, stout blackish setae, posterior excision small and asymmetric; aedeagus as in Figs 2F–H; ventral process asymmetric in lateral view, apically acute in ventral view; dorsal plate with long, large apical portion and with short, weakly sclerotized basal portion; internal sac with two sclerotized spines of different shapes and without ring-shaped structure. Female. Posterior margin of tergite VIII convex; posterior margin of sternite VIII convexly produced posteriorly. Comparative notes. The new species resembles L. yui Peng & Q.-L. Li, 2015 from Fengyangshan Natural Reserve, Zhejiang in having similar postero-median impressions on the male sternites V–VI, a weakly concave posterior margin of the male sternite VII and the similarly derived structure of the aedeagus. It is distinguished from L. yui by the chaetotaxy of the male sternite VI, the extensive median impression of the male sternite VIII, and the shape of the ventral process of the aedeagus. For illustrations of L. yui see Peng et al. (2015: figures 6B, 8). Distribution and natural history. The type locality is situated inWangdongyang to the south of Jingning, southern Zhejiang. The specimens were sifted from leaf litter and humus in a deciduous forest at an altitude of 1305 m. Etymology. This species is dedicated to Mr. Zheng-Yi Miao, who collected some of type specimens.Published as part of Zhao, Qing-Hao & Peng, Zhong, 2021, New species and new records of the genus Lathrobium Gravenhorst (Coleoptera Staphylinidae: Paederinae) from Zhejiang, East China, pp. 172-181 in Zootaxa 4990 (1) on pages 177-179, DOI: 10.11646/zootaxa.4990.1.11, http://zenodo.org/record/498258
Sphaerobulbus Zhao & Tang 2020
No full textKey to species of Sphaerobulbus The key is based on species descriptions provided by SMൾŦANA (2003, 2005, 2006, 2010, 2016) and the photographs of all species from Smetana’s collection taken by the second author in 2012. 1 Elytra about as-long-as or longer than pronotum, EL/ PL=0.99–1.1; abdominal tergites VII with apical palisade fringe..................................................................... 2 – Elytra shorter than pronotum, EL/PL=0.77–0.90; abdominal tergites VII without apical palisade fringe......................................................................................... 6 2 Abdominal tergites III–V each with deep median impression delimited by two short oblique carinae and posterior basal line; body without bluish tint.......... 3 – Abdominal tergites III–V each without deep median impression and two short oblique carinae; body with bluish tint..................................................................... 5 3 Pronotum as long as wide, PL/PW=1.00; subhumeral portion of each elytron with gold tomentose pubescence, abdominal tergites VI and VII each with medi- an golden tomentose patch. Habitus: Fig. 36. Aedeagus: SMETANA (2006: Figs 8–10). China (Shaanxi).................................................. S. ornatus Smetana, 2006 – Pronotum distinctly longer than wide, PL/PW=1.21– 1.30; elytra and abdominal tergites without gold tomentose pubescence or patch..................................... 4 4 Head as wide as long, HW/HL=1.00; paramere asymmetrical, underside of paramere with three degenerated sensory peg setae in apical portion. Habitus: Fig. 34. Aedeagus: SMETANA (2005: Figs 5–7). China (Shaanxi, Hubei, Sichuan, Guizhou?).................................................................... S. rex Smetana, 2005 – Head a little wider than long, HW/HL=1.08; paramere almost symmetrical, underside of paramere with five degenerated sensory peg setae in subapical portion. Habitus: Figs 3, 4. Aedeagus: Figs 15–17. China (Guangxi).............................. S. guangxiensis sp. nov. 5 Posterior angles of head rounded; posterior half of head with broad impunctate midline; apical portion of aedeagal median lobe hook-like; underside of paramere with sparse sensory peg setae. Habitus: Figs 5, 6. Aedeagus: Figs 19–23. China (Yunnan)............................................................................ S. ningliei sp. nov. – Posterior angles of head slightly prominent; posterior half of head with narrow impunctate midline; apical portion of aedeagal median lobe straightly pointed apicad; underside of paramere with dense sensory peg setae. Habitus: Fig. 26. Aedeagus: SMETANA (2010: Figs 3, 4). China (Sichuan, Yunnan).......................................................... S. cardinalis Smetana, 2010 6 Forebody metallic blue. Habitus: Figs 1, 2. Aedeagus: Figs 7–12. China (Sichuan)......................................................................................... S. smetanai sp. nov. – Forebody blackish (head and pronotum with dark blue hue in S. davidi)................................................... 7 7 Abdominal tergites VI and VII each with median golden tomentose patch.................................................... 8 – Abdominal tergites VI and VII each without median golden tomentose patch........................................... 10 8 Larger species, BL= 26 mm. Aedeagus: SMETANA (2016: Figs 7, 8). China (Guangxi)............................................................................ S. thomasi Smetana, 2016 – Smaller species, BL= 14–16 mm................................. 9 9 Elytra much shorter than wide, EL/EW=0.75; elytra reddish brown. Habitus: Fig. 29. Aedeagus: SMETANA (2006, Figs 3–5). China (Yunnan)....................................................................... S. biplagiatus Smetana, 2006 – Elytra shorter than wide, EL/EW=0.86; elytra blackish. Habitus: Fig. 30. Aedeagus: SMETANA (2003: Figs 32–34). China (Yunnan)............................................................................................ S. brezinai Smetana, 2003 10 Smaller species, BL= 9–10.5 mm; posterior margin of abdominal segment VII and entire abdominal segments VIII–X reddish yellow. Habitus: Fig. 32. Aedeagus: SMETANA (2005: Figs 10–12). China (Sichuan).................................................. S. pusio Smetana, 2005 – Larger species, BL= 12.5–20 mm; entire abdominal segments VII–X blackish......................................... 11 11 Median impression of abdominal tergites III–V relatively deeper, laterally delimited by two short oblique carinae. Habitus: Fig. 25. Aedeagus: SMETANA (2003: Figs 22–25). China (Yunnan, Sichuan)................................................................ S. bisinuatus Smetana, 2003 – Median impression of abdominal tergites III–V shallower or indistinct, laterally without two short oblique carinae.......................................................... 12 12 Legs reddish............................................................... 13 – Legs blackish.............................................................. 16 13 Posterior half of head with impunctate midline; punctation of head and pronotum mostly very dense and well delimited, interstices smooth and ridge-like. Ha- bitus: Fig. 28. Aedeagus: SMETANA (2005: Figs 20–22). China (Sichuan).................. S. bicolor Smetana, 2005 – Posterior half of head without impunctate midline; punctation of head and pronotum mostly less dense and slightly confluent, interstices microsculptured and not ridge-like..................................................... 14 14 Head wider than long, HW/HL=1.11. Aedeagus: SMETANA (2016: Figs 3, 4). China (Yunnan).............................................................. S. radani Smetana, 2016 – Head much wider than long, HW/HL=1.31......... 15 15 Midanterior portion of head with sparse punctation; pronotum with broad impunctate midline; posterior basal line of abdominal tergites IV and V bisinuate. Habitus: Fig. 33. Aedeagus: SMETANA (2005: Figs 3–5). China (Sichuan)............................................................................................. S. nagahatai Smetana, 2005 – Midanterior portion of head with dense punctation; pronotum with narrow impunctate midline; posteri- or basal line of abdominal tergites IV and V simple. Habitus: Fig. 37. Aedeagus: SMETANA (2003: Figs 27, 28). China (Yunnan)......................................................................................... S. yulongmontis Smetana, 2003 16 Head and pronotum with dark blue hue; interstices of head and pronotum smooth. Aedeagus: SMETANA (2016, Figs 11–13). China (Yunnan)........................................................................... S. davidi Smetana, 2016 – Head and pronotum without dark blue hue; interstices of head and pronotum microsculptured......... 17 17 Superior and inferior lines of pronotal hypomeron widely separated at anterior angle.......................... 18 – Superior and inferior lines of pronotal hypomeron joined at anterior angle............................................. 19 18 Pronotum with punctation mostly well delimited and interstices even. Habitus: Fig. 31. Aedeagus: SMETA- NA (2003: Figs 82–84). China (Qinghai, Yunnan, Xizang).................................. S. nigrita (Smetana, 2003) – Pronotum with punctation mostly confluent and interstices bumpy. Habitus: Fig. 24. Aedeagus: SMETA- NA (2003: Figs 90, 91). China (Xizang)................................................................... S. alpinus (Smetana, 2003) 19 Sternite 9 with posterior margin deeply emarginate; median lobe of aedeagus less acute at apex, paramere wider. Habitus: Fig. 35. Aedeagus: SMETANA (2003: Figs 37 –39). China (Yunnan)................................................................................. S. yunnanus Smetana, 2003 – Sternite 9 with posterior margin shallowly emarginate; median lobe of aedeagus acute at apex, paramere narrower. Habitus: Fig. 27. Aedeagus: SMETANA (2003: Figs 41, 42). China (Yunnan).......................................................................... S. murzini Smetana, 2003Published as part of Zhao, Xin & Tang, Liang, 2020, Three new species of the genus Sphaerobulbus from China (Coleoptera: Staphylinidae), pp. 333-341 in Acta Entomologica Musei Nationalis Pragae 60 (1) on pages 338-341, DOI: 10.37520/aemnp.2020.019, http://zenodo.org/record/387994
Stenus zhejiangensis Zhao 2017, new species
No full textStenus zhejiangensis Tang, Liu & Zhao, new species (Figs. 3, 13 –16) Type material. Holotype. China: Zhejiang: Zhuji: ♂, glued on a card with labels as follows: “ China: Zhejiang Province, Zhuji City, Dongbaishan, mixed leaf litter, sifted, alt. 300m, 31.III.2013, Tie-Xiong Zhao leg.” “ Holotype / Stenus zhejiangensis / Tang, Zhao & Luo ” [red handwritten label] (SHNU). Description. Body blackish with clypeus and labrum dark reddish brown. Antennae reddish brown with club infuscate, maxillary palpi and legs reddish brown. BL: 3.8 mm, FL: 2.2 mm. HW: 0.75 mm, PL: 0.63 mm, PW: 0.59 mm, EL: 0.83 mm, EW: 0.83 mm, SL: 0.64 mm. Head 0.93 times as wide as elytra; interocular area with two deep longitudinal furrows, median portion convex, extending a little beneath the level of inner eye margins; punctures round to elliptic, mostly well delimited, similar in size, diameter of punctures as wide as apical cross section of antennal segment II; interstices partially reticulated, distinctly narrower than half the diameter of punctures. Paraglossa oval. Pronotum 1.06 times as long as wide; disk slightly uneven, with shallow median longitudinal furrow; punctures slightly confluent, different in size, large punctures similar to those of head; interstices partially reticulated, narrower than half the diameter of punctures. Elytra as long as wide; disk relatively even with shallow humeral impression and shallow sutural impression; punctures mostly similar in size and slightly larger than the large punctures of pronotum, interstices mostly shallowly reticulated. Legs with tarsomeres IV deeply bilobed. Abdomen cylindrical; segment III with paratergites very narrow and punctate, directed ventrad, segments IV– VI with tergites and sternites fused with suture very indistinct, tergite VII with apical membranous fringe; punctures round to elliptic, becoming slightly smaller posteriad; interstices reticulated, mostly narrower than half the diameter of punctures on tergite III–V. Male. Sternite VII with posteriomedian portion flattened and posterior margin slightly emarginated at middle; sternite VIII (Fig. 14) with very shallow emargination at middle of posterior margin; sternite IX (Fig. 13) with long apicolateral projections, posterior margin serrate and roundly emarginated. Aedeagus (Figs. 15, 16) slender; apical sclerotized area with a round apical projection at middle; expulsion clasps large, strongly sclerotized; parameres much longer than median lobe, tapering apicad at about half, each with 5 subapical setae and 8 basal setae on apico-internal margins. Female. Unknown. Distribution. China (Zhejiang). Remarks. The species belongs to Stenus cephalotes group and it is the first species of the group with fully developed hind wings. Etymology. The specific name is derived from the type locality of this species.Published as part of Zhao, Tie-Xiong, 2017, A study on the genus Stenus Latreille from Zhuji City of Zhejiang, East China (Coleoptera, Staphylinidae), pp. 25-38 in Zootaxa 4323 (1) on page 31, DOI: 10.11646/zootaxa.4323.1.2, http://zenodo.org/record/89731
Lathrobium zhangdinghengi Peng, Li & Zhao, sp. nov.
No full textLathrobium zhangdinghengi Peng, Li & Zhao, sp. nov. (Figs. 1 E, 6) Type material. (3 3, 10 ƤƤ). HOLOTYPE: 3, labelled ‘ CHINA: GUANGXI Prov. / Lingui County / Huaping N. R. / Anjiangping / 17.vii. 2011, alt. 1,300–1,780 m / Yan Chen & Wen-Li Ma leg.’. PARATYPES: 1 Ƥ, same label data as holotype; 2 3, 1Ƥ, same, but ‘alt. 1,500 m / Liang Tang leg.’; 1 Ƥ, same data, but ‘alt. 1,700 m / Zhong Peng leg.’; 2 ƤƤ, same, but ‘ 14.vii. 2011, alt. 1,400–1,700 m / Zhong Peng leg.’; 3 ƤƤ, same data, but ‘ 14.vii. 2011, alt. 1,400–1,700 m / Ling Tang & Wen-Jia He leg.’; 1 Ƥ, same data, but ‘alt. 1,400–1,700 m / Ling Tang & Wen-Jia He leg.’; 1 Ƥ, same data, but ‘ 12.vii. 2011, alt. 1,400–1,700 m / Chen, Ma, Peng & Zhu leg.’. Description. Measurements and ratios: BL 10.05–11.62, HL 1.36–1.44, HW 1.59–1.63, PL 1.93 –2.00, PW 1.74–1.78, EL 1.32–1.40, HL/HW 0.85–0.88, HW/PW 0.89–0.92, HL/PL 0.70–0.72, PW/PL 0.89–0.92, EL/PL 0.68–0.71. Habitus as in Fig. 1 E. Externally similar to L. dayaoshanense, except for the slightly darker average coloration, the larger body size, the somewhat broader head, the denser punctation on the head and the pronotum, and the narrower impunctate midline on the pronotum. Male. Sternite VII (Fig. 6 D) with semi-elliptical emargination at apical margin, medioapical area with short modified setae surrounding this emargination; sternite VIII (Fig. 6 E) with weak emargination and narrow impression along middle, on either side of this impression with variably dense modified setae; sternite IX (Fig. 6 F) distinctly asymmetric; aedeagus as in Fig. 6 G– 6 I. Female. Apical margin of tergite VIII (Fig. 6 A) angulate in middle; sternite VIII (Fig. 6 B) slightly oblong, apical margin strongly convex, margin with sparse, indistinct micropubescence; tergite IX (Fig. 6 C) narrowly separated anteriorly; tergite X obtuse basally, moderately reaching anterior margin of tergite IX, broadly convex apically. Remarks. Lathrobium zhangdinghengi is closest to L. zhujianqingi by the similar male sternite VIII. Lathrobium zhangdinghengi is separated from these species by the subtrapezoidal head, by the shape of the male sternite VII with a semi-elliptical emargination at the apical margin, and by the aedeagus in ventral view much narrower basally than at midlength and with a small hook-shaped ventral process. In L. zhujianqingi, by contrast, the head is almost quadrate, the male sternite VII has an inconspicuous apical emargination, the aedeagus in ventral view only somewhat narrower at base compared to at midlength and the ventral process of it is forficate. Distribution. South China (Guangxi: Huaping Nature Reserve). Habitat. The adults were collected from the leaf litter of the forest floor by sifting. Etymology. The species is named after Ding-Heng Zhang, the section chief of the Huaping Nature Reserve, who lent extensive support to our collecting trip.Published as part of Peng, Zhong, Li, Li-Zhen & Zhao, Mei-Jun, 2012, New species of the genus Lathrobium Gravenhorst (Coleoptera: Staphylinidae: Paederinae) from Guangxi, South China, pp. 1-16 in Zootaxa 3389 on page 9, DOI: 10.5281/zenodo.20840
Rhyncocheilus huanghaoi Tang, Schillhammer & Zhao 2021, sp. n.
No full textRhyncocheilus huanghaoi Tang, Schillhammer & Zhao sp. n. (Figs 3, 4, 16–18, 34–37) Type material. Holotype. China: Xizang: ³, glued on a card with labels as follows: “ China: Xizang A. R., Motuo County, Hanmi-A’niqiao, alt. 1560 m, 10.VIII.2011, Bi Wen-Xuan leg.” “ Holotype / Rhyncocheilus huanghaoi / Tang, Schillhammer & Zhao” [red handwritten label] (SHNU). Paratypes. 1³, same data as for the holotype (SHNU); 1³, Motuo County, A’niqiao, alt. 1060 m, 8.VIII.2011, Bi Wen-Xuan leg. (NMW); 2♀♀, Motuo, Bari Vil., alt. 1200–1850 m, 27.VII.2014, Bi Wen-Xuan leg. (SHNU); 1♀, Motuo, 1400–1800 m, 17.VIII.2013, Bi Wen-Xuan leg. (SHNU); 1♀, Motuo, 1100 m, 19.VIII.2013, Bi Wen-Xuan leg. (SHNU); 6♀♀, Motuo, A’niqiao, alt. 1100 m, 16–18.VIII.2005, Huang & Tang leg. (SHNU, NMW). Description. Measurements of male: BL: 20.6–21.9 mm, FL: 12.0– 12.4 mm. HL: 2.61–2.67mm, HW: 3.28 mm, EYL: 1.06–1.11 mm, TL: 1.17–1.28 mm, PL: 2.72–2.89 mm, PW: 2.89–2.95 mm, EL: 5.12–5.34 mm, EW: 5.39–5.95 mm. HW/HL: 1.23–1.26, TL/EYL: 1.10–1.21, PL/PW: 0.94–1.00, EL/EW: 0.90–0.95. Measurements of female: BL: 19.9–25.0 mm, FL: 13.0– 13.7 mm. HL: 2.89–3.06mm, HW: 3.61–3.84 mm, EYL: 1.11–1.17 mm, TL: 1.17–1.45 mm, PL: 3.00– 3.73 mm, PW: 3.22–3.45 mm, EL: 5.73–6.00 mm, EW: 5.84– 6.51 mm. HW/HL: 1.18–1.27 mm, TL/EYL: 1.05–1.30, PL/PW: 0.90–1.08, EL/EW: 0.90–0.98. Head dorsally reddish with a small transverse dark patch on vertex and a large median dark patch in posterior third, postgena with pair of longitudinal dark patches on basal portion, labrum reddish, mandibles reddish with inner margins darkened, palpi reddish, antennae with basal seven antennomeres reddish, antennomeres 8–11 black, pronotum reddish with variable dark brown patches, anepisternum black in anterior half, mid coxal cavities blackish, elytra reddish, abdominal segments III–V predominantly blackish with lateral and posterior portions reddish, segment VI blackish, segment VII with basal 2/5 black and apical 3/5 reddish, remaining segments reddish, legs reddish except front tarsomeres darker. Head subquadrate with lateral margins at tempora almost parallel, posterior margin concave at neck; surface without irregularities, slightly impressed at the dark black patches, punctation very dense with punctures similar in size, pubescence long and golden; labrum (Fig. 18) densely golden setose; antennae long and slender, antennomeres 1–6 distinctly oblong, antennomere 3 shorter than scapus, antennomere 2 about as long as antennomere 4, antennomere 7 a little longer than wide, antennomeres 8 and 9 a little wider than long, antennomere 10 almost as long as wide, antennomere 11 longer than penultimate, antennomeres 7–10 slightly asymmetrical, antennomere 11 asymmetrical. Pronotum trapezoid, widest at anterior angles, weakly narrowed toward base, almost parallel-sided, anterior margin distinctly emarginate in the middle; dorsal surface uneven with a pair of transverse impressions near anterior margin, a pair of oblique impressions near the middle of lateral margins and a pair of impressions in posterior half; surface with dense and golden pubescence, except a bold short portion on posterior half of the midline. Elytra long with lateral margins distinctly divergent posteriad and joined posterior margin distinctly angulate, surface slightly uneven due to shallow depressions around sockets of macro-setae; punctation fine and dense, ground pubescence golden. Scutellum finely and densely punctate, with silvery pubescence in anterior third and a heart-shaped black tomentose patch in posterior two thirds. Abdominal tergites III–VI each with a mediobasal depression laterally delimited by short strongly oblique ac- cessory lines; tergites III–V with golden pubescence except for large patch of black pubescence posteriad of basal depressions, tergite VI mostly with black pubescence except for silvery pubescence along midline and basal margin and two small silvery tomentose patches near lateral margins, tergite VII almost entirely with silvery pubescence except for pair of basal black tomentose patches near lateral margin and pair of admedian exposed dots, tergite VIII–X covered with golden pubescence; tergite X in both sexes triangular with round apex. Male. Head (Fig. 16) with posterior angle less prominent; sternites VII and VIII emarginate in the middle of posterior margin; aedeagus (Figs 34, 35) slender, median lobe apically with large left facing tooth on ventral side (Fig. 36); paramere longer than median lobe, apex roundly pointed, inner side of apical portion (Fig. 37) densely covered with peg setae, subapical portion close to peg setae area with deep cavity to accommodate the large apical tooth of the median lobe. Female. Head (Fig. 17) with posterior angle more prominent; sternites VII and VIII with posterior margin en- tire. Distribution. China (Xizang). Diagnosis. The new species is similar to Rhyncocheilus rugulipennis Cameron, 1932 in general appearance, but it may be distinguished from the latter by the slender body form and weaker antennal club, fewer black markings on the forebody, and more distinctly developed pubescence on abdominal sternites. Etymology. This species is named in honor of Mr. Hao Huang, who collected some specimens of the new species.Published as part of Tang, Liang, Schillhammer, Harald & Zhao, Xin, 2021, Notes on the genus Rhyncocheilus in China (Coleoptera, Staphylinidae Staphylininae) with descriptions of three new species, pp. 99-112 in Zootaxa 4948 (1) on pages 102-103, DOI: 10.11646/zootaxa.4948.1.5, http://zenodo.org/record/461617
Molecular Dynamics Simulations to Investigate the Aggregation Behaviors of the A beta(17-42) Oligomers
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