Review of Chinese species of the genus Thoracostrongylus Bernhauer, 1915 (Coleoptera, Staphylinidae, Staphylininae)
Xia, Mei-Hua
Tang, Liang
Schillhammer, Harald
ZooKeys
2022
2022-11-22
1131
99
134
https://zoobank.org/09964804-5ECF-43BA-817C-6F2A046D2759
Xia & Tang & Schillhammer, 2022
Xia & Tang & Schillhammer
2022
Insecta
Staphylinidae
Thoracostrongylus
CoL
Animalia
Thoracostrongylus brachypterus
Coleoptera
0
99
Arthropoda
species
brachypterus
sp. nov.
Figs 96-101 , 121 短翅钝胸隐翅虫
Type material. Holotype.China - Sichuan Prov.•♂, glued on a card with labels as follows: "China: Sichuan, Muli Tibetan Autonomous County, Mianbu Yakou; 27°68'N, 101°22'E; alt. 3100 m; 04 June 2012; Hao Huang. leg." "Holotype / Thoracostrongylus brachypterus/ Xia, Tang & Schillhammer" [red handwritten label]; SHNU. Paratypes.China - Sichuan Prov.• 1♀; S Sichuan, pass 20km S MULI (BOWA); 27.45°N, 101.13°E; 28-29 June 1998; mixed forest cca. 3500m; Jaroslav Turna leg.; NMW • 21♂♂, 9♀♀; S-Sichuan, pass betw. Yanyuan/Muli; alt. 3244 m; 27.68638°N, 101.22335°E; 11-18 June 2017; C. Reuter leg.; 20 BFC, 10 NMW • 1♂; S-Sichuan, pass ~ 50km NE Yanyuan to Xichang; alt. 2950 m, 27°33'11"N, 101°45'04"E; 07-18 June 2017; C. Reuter leg.; BFC. Figures 96-101. Thoracostrongylus brachypterussp. nov. 96, 97habitus 98-101aedeagus, ventral ( 98, 99) and lateral ( 100, 101) views. Scale bars: 1 mm ( 96, 97); 0.2 mm ( 98-101).
Measurements. Male: BL: 7.6-9.3 mm, FL: 4.1-4.6 mm. HL: 1.20-1.30 mm, HW: 1.50-1.70 mm, CL: 0.80-0.89 mm, PO: 0.22-0.25 mm, PL: 1.55-1.78 mm, PW: 1.23-1.45 mm, EL: 1.60-1.72 mm, EW: 1.70-1.89 mm. HL/HW: 0.77-0.80, CL/PO: 3.23-4.00, PL/PW: 1.23-1.26, EL/EW: 0.91-0.94, HW/EW: 0.88-0.90. Female: BL: 11.0 mm, FL: 4.8-5.0 mm. HL: 1.35-1.40 mm, HW: 1.80-1.85 mm, CL: 0.80-0.90 mm, PO: 0.30-0.35 mm, PL: 1.75-1.80 mm, PW: 1.55 mm, EL: 1.85 mm, EW: 1.95 mm. HL/HW: 0.73-0.78, CL/PO: 2.33-3.03, PL/PW: 1.13-1.16, EL/EW: 0.95, HW/EW: 0.92-0.95.
Diagnosis. The new species is the only brachypterous species of the genus so far that is known from mainland China, except for a potential record of a brachypterous T. malaisei, from which it can be separated as indicated above. The T. malaiseispecimens from the type locality have rather short elytra and developed hindwings, which may be functional or not since the palisade fringe on tergite VII is very narrow. Thoracostrongylus miyakeifrom Taiwan also has weakly developed, non-functional hind wings and no palisade fringe on tergite VII, which differs from the new species by pronotum without impunctate midline.
Description. The new species is almost identical to T. malaisei, from which it differs, in addition to the different aedeagus, by the differently colored labrum, which is reddish with each lobe with a large, dark brown, central spot (in T. malaiseiwith a black medial margin along medial excision). Most specimens of T. malaiseihave at least a very narrow palisade fringe on tergite VII, which is lacking only in the single specimen from Yunnan. Male.Sternite VIII with medioapical emargination. Aedeagus (Figs 98-101) slender and long, median lobe swollen in middle third and then narrowed apicad in ventral view; in lateral view, median lobe with subapical tooth on dorsal side in apical sixth; paramere rather wide, subparallel-sided, apical margin with slight medial notch, with approximately seven setae. Female.Sternite VIII with posterior margin entire.
Distribution. China (Sichuan).
Etymology. This specific name (derived from Greek) means "short winged".