Triomicrus gutianensis Shen and Yin

Shen, Jia-Wei, Yin, Zi-Wei & Li, Li-Zhen, 2015, Triomicrus Sharp of Eastern China (Coleoptera: Staphylinidae: Pselaphinae), Zootaxa 4007 (4), pp. 509-528 : 518-520

publication ID

https://doi.org/ 10.11646/zootaxa.4007.4.3

publication LSID

lsid:zoobank.org:pub:680E5EBB-05B4-457F-A27A-B2A52FBB28BD

DOI

https://doi.org/10.5281/zenodo.6098050

persistent identifier

https://treatment.plazi.org/id/BF1B8789-FF87-FFA6-93E5-F8B0BD80FB78

treatment provided by

Plazi

scientific name

Triomicrus gutianensis Shen and Yin
status

sp. nov.

Triomicrus gutianensis Shen and Yin View in CoL , new species

( Figs 8–9 View FIGURE 8 View FIGURE 9 )

Type material (14 ♂♂, 13 ♀♀). Holotype: China: ♂, labeled ‘ China: N. Zhejiang, Quzhou City, Gutian Shan N. R. (古 田山), 29°14’45’’N, 118°06’52’’E, mixed leaf litter, sifted, 400–500 m, 19.vi.2013, Zheng & Li leg.’ ( SNUC). GoogleMaps Paratypes: China: 4 ♂♂, 6 ♀♀, same data as holotype; 1 ♂, 2 ♀♀, labeled ‘ China: N. Zhejiang, Quzhou City, Gutian Shan N. R., 29°16’04’’N, 118°07’28’’E, mixed leaf litter, sifted, 1200–1240 m, 18.vi.2013, Hu leg.’ ( SNUC); GoogleMaps 1 ♂, 2 ♀♀, labeled ‘ China: C. Zhejiang, Zhuji (诸暨), Dongbai Shan (东 白山), 29°29’11’’N, 120°23’54’’E, leaf litter, sifted, 300 m, 20.x.2012, Tie-Xiong Zhao leg.’ ( SNUC); GoogleMaps 1 ♂, 1 ♀, labeled ‘ China: S. Zhejiang, Lishui City, Fengyang Shan N. R. (凤阳山), forest nr. Datianping (大田坪), 27°54’33’’-55’18’’N, 119°10’20’’-17’’E, mixed litter, moss, sifted, 1170–1300 m, 06.x.2013, Feng, Peng, Yu & Yin leg.’ ( SNUC); 2 ♂♂, 1 ♀, labeled ‘ China: Zhejiang, Linan City, Qingliangfeng N. R. (清凉峰), 30°06’04’’N, 118°51’45’’E, alt. 1300 m, mixed litter, sifted, 09.viii.2011, Jian-Qing Zhu leg.’ ( SNUC); GoogleMaps 4 ♂♂, 1 ♀, labeled ‘ China: Zhejiang, Ningbo City, Tiantong Shan (天童山), 29°47’N, 121°48’E, leaf litter, sifted, 350 m, 26.iv.2009, Ting Feng leg.’ ( SNUC). GoogleMaps

Diagnosis. Antennomere XI with impression in median region. Head lacking median vertexal carina. Pronotum finely and sparsely punctate. Elytral subhumeral sulci absent. Profemora simple, protrochanters lacking spine, protibiae with apical protuberance, mesotibiae with apical denticle. Apical lamina of abdominal sternite VII stout, widest near middle, posterior margin obliquely narrowed. Aedeagus with right paramere slightly curved laterally, internal sac bearing several sclerotized spines and a densely hairy sclerite.

Description. Male ( Fig. 8 View FIGURE 8 A). Length 2.18–2.27 mm. Head longer than wide, HL 0.48–0.49 mm, HW 0.43– 0.44 mm, lacking median vertexal carina; lateral portions of frons finely and sparsely punctate; each eye composed of about 34 facets. Antennomere XI ( Fig. 8 View FIGURE 8 B–C) with median impression, diameter of impression about half of segmental length. Pronotum wider than long, PL 0.45–0.48 mm, PW 0.50–0.52 mm, relatively smooth. Profemora simple, protrochanters lacking spur, protibiae with apical protuberance ( Fig. 8 View FIGURE 8 E), mesotibiae with apical denticle ( Fig. 8 View FIGURE 8 F). Elytra wider than long, EL 0.79–0.80 mm, EW 0.85–0.88 mm, finely punctate; subhumeral sulci absent. Abdomen wider than long, AL 0.48–0.52 mm, AW 0.75–0.78 mm; abdominal tergite IV (first visible tergite) with discal carinae extending to three-fifths of tergal length; abdominal sternite VII modified ( Fig. 8 View FIGURE 8 D), with apical lamina stout, widest near middle, posterior margin obliquely narrowed. Length of aedeagus ( Fig. 8 View FIGURE 8 G) including parameres 0.33 mm, with right paramere slightly curved laterally, internal sac bearing several sclerotized spines and densely hairy sclerite.

Female. Similar to male; antennomere XI, protibiae and mesotibiae unmodified. Each eye composed of about 23 facets. Measurements: BL 2.01–2.13 mm, HL 0.46–0.48 mm, HW 0.41–0.43 mm, PL 0.39–0.43 mm, PW 0.49– 0.51 mm, EL 0.73–0.74 mm, EW 0.82–0.85 mm, AL 0.43–0.48 mm, AW 0.75–0.78 mm.

Distribution. Eastern China: Zhejiang.

Etymology. This species is named after the type locality, Gutian Mountain.

Remarks. Although populations from various localities exhibit slight variation in the male sternite VII ( Figs 8 View FIGURE 8 D, 9A–D) and aedeagus ( Figs 8 View FIGURE 8 G, 9E–H), the presence of a large impression on the Antennomere XI, and the apical spur of the protibiae and mesotibiae are stable. Therefore all populations are treated as belonging to the same species.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

SubFamily

Pselaphinae

Genus

Triomicrus

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF