Thoracostrongylus bicolor, Xia & Tang & Schillhammer, 2022

Xia, Mei-Hua, Tang, Liang & Schillhammer, Harald, 2022, Review of Chinese species of the genus Thoracostrongylus Bernhauer, 1915 (Coleoptera, Staphylinidae, Staphylininae), ZooKeys 1131, pp. 99-134 : 99

Thoracostrongylus bicolor sp. nov.

Figs 86-91 , 92-95 , 120 双色钝胸隐翅虫

Type material.

Holotype. China - Guangdong Prov. • ♂, glued on a card with labels as follows: "China: Guangdong, Shaoguan, Ruyuan, Nanling N.R., Ruyang; 24°56'10"N, 113°00'18"E; alt. 1050-1200 m; 01-06 May 2021; Hu, Lin, Zhou & Li leg." "Holotype / Thoracostrongylus bicolor / Xia, Tang & Schillhammer" [red handwritten label]; SHNU. Paratypes. China - Guangdong Prov. • 4♂♂, 1♀; same data as for the holotype; SHNU • 1♂, 3♀♀; Shaoguan, Ruyuan County, Nanling N.R., Ruyang; 24°55'49.5"N, 113°01'08"E; alt. 1000 m; 01 May 2021; Zhou & Li leg.; SHNU • 1♀; Ruyuan County, Nanling N.R., Qingshui Valley; 24°54'57"N, 113°01'55"E; alt. 900 m; 04 May 2015; Peng, Tu & Zhou leg.; SHNU. - Hunan Prov. • 1♀; Yizhang, Mangshan, Mengkengshi; 24°55'10"N, 112°58'37"E; alt. 1625 m; 26 August 2020; Zhong Peng leg.; SHNU. - Guangxi Prov. • 3♂♂, 2♀♀; Huanjiang, Jiuwan Mt., Yangmei’ao; 25°12'22.15"N, 108°40'32.01"E; alt. 1250 m; 25 April 2021; Tang, Peng, Cai & Song leg.; SHNU • 2♂♂; Xing’an County, Mao’er Shan; 25°53'07"N, 110°29'14"E; alt. 1143 m; 31 July 2014; Peng, Song, Yu & Yan leg.; SHNU • 1♀; Xing’an County, Mao’er Shan; 25°53'11"N, 110°28'13"E; alt. 810 m; 28 July 2014; Peng, Song, Yu & Yan leg.; SHNU • 1♂; Mt. Damingshan; 23°23'N, 103°29'E; alt. 1150-1250 m; 31 July 2012; Hu & Song leg.; SHNU • 1♀; Guilin City, Huaping N.R., Yunxi Valley; 25°34'00.62"N, 109°56'19.59"E; alt. 1460-1550 m; 23 April 2021; Yin, Zhang, Pan & Shen leg.; SHNU • 1♀; Jinxiu County, Mt. Shengtangshan; alt. 1200 m; 27 July 2011; Zhong Peng leg.; SHNU. - Yunnan Prov. • 5♀♀; NE Kunming; 25°08'40"N, 102°53'48"E; alt. 2290 m; 11 August 2014; mixed forest, sifted; V. Assing leg.; 3 VAC, 2 NMW • 5♀♀; NE Kunming; 25°08'35"N, 102°53'49"E; alt. 2320 m; 13 August 2014; mixed forest, sifted; V. Assing leg.; 4 VAC, 1 NMW • 1♀; Mt. W Xundian; 25°34'58"N, 103°08'42"E; alt. 2300 m; 15 August 2014; sifted; V. Assing leg.; VAC • 2♂♂, 2♀♀; Mt. W Xundian; 25°34'58"N, 103°08'42"E; alt. 2300 m; 16 August 2014; sifted; V. Assing leg.; 3 VAC, 1 NMW • 1 ex.; E Kunming, Xiaobailong Forest Park; 24°55'43"N, 103°05'22"E; alt. 2110 m; secondary pine forest, pine litter and litter at trail margin sifted; 10 August 2014; M. Schülke leg. [CH14-03]; MSC • 1♂, 2exs.; NE Kunming; 25°09'07"N, 102°53'46"E; alt. 2280 m; secondary pine forest, with scattered old alder, litter, sifted; 11 August 2014; M. Schülke leg. [CH14-04]; MSC • 1♂, 1 ex.; NE Kunming; 25°08'40"N, 102°53'48"E; alt. 2290 m; mixed deciduous forest with scattered pine trees, litter and mushrooms, sifted; 11 August 2014; M. Schülke leg. [CH14-05]; MSC • 1ex.; NE Kunming; 25°08'35"N, 102°53'49"E; alt. 2320 m; mixed forest with alder, oak, and pine, litter and mushrooms, sifted; 13 August 2014; M. Schülke leg. [CH14-06]; MSC • 1ex.; Mt. W Xundian; 25°34'58"N, 103°08'42"E; alt. 2300 m; mixed forest with alder, pine, shrub undergrowth, litter, twigs, and roots of herbs, sifted; 16 August 2014; M. Schülke leg. [CH14-09b]; MSC • 1♂; mountain W Yuxi; 24°27'11"N, 102°29'58"E; alt. 2250 m; secondary mixed forest, litter, roots, and moss sifted; 31 August 2014; M. Schülke leg. [CH14-23]; MSC.

Measurements.

Male: BL: 8.1-10.1 mm, FL: 4.5-4.9 mm. HL: 1.22-1.39 mm, HW: 1.78-1.95 mm, CL: 0.83-0.95 mm, PO: 0.22-0.28 mm, PL: 1.67-1.78 mm, PW: 1.39-1.45 mm, EL: 1.78-2.06 mm, EW: 1.95-2.09 mm. HL/HW: 0.69-0.74, CL/PO: 3.20-4.25, PL/PW: 1.15-1.24, EL/EW: 0.91-1.00, HW/EW: 0.91-0.97, PW/EW: 0.69-0.74, HW/PW: 1.23-1.35. Female: BL: 7.9-11.0 mm, FL: 4.6-5.4 mm. HL: 1.22-1.50 mm, HW: 1.83-2.11 mm, CL: 0.89-1.06 mm, PO: 0.22-0.28 mm, PL: 1.67-1.89 mm, PW: 1.39-1.61 mm, EL: 1.95-2.22 mm, EW: 1.95-2.28 mm. HL/HW: 0.67-0.74, CL/PO: 3.40-4.75, PL/PW: 1.11-1.26, EL/EW: 0.97-1.00, HW/EW: 0.93-0.97, PW/EW: 0.66-0.73, HW/PW: 1.28-1.41.

Diagnosis.

The new species is similar to T. baishanzuensis sp. nov., but it can be easily recognized from latter by the bicolored femora. From other species of east and southeast China, it can be easily recognized by the bicolored abdomen.

Description.

The new species is similar to T. baishanzuensis sp. nov. in most aspects except for the following characters: abdominal tergites III-VII each with a longer and more distinct triangular, mediobasal, golden tomentose patch; femora each with median dark mark and apical dark mark, although the apical dark markings of the forelegs are less distinct.

Male. Sternite VIII with medioapical emargination. Aedeagus (Figs 88 - 95 ) slender, median lobe gradually narrowed apicad with round apex in ventral view, apex of median lobe expanded dorsad in lateral view; paramere relatively long, apex wide and round with approximately 11 setae around the apical margin.

Female. Sternite VIII with posterior margin entire.

Distribution.

China (Guangdong, Hunan, Guangxi, and Yunnan).

Etymology.

This species is named after its bicolored abdomen.

Figures

Figures 86 - 91. Thoracostrongylus bicolor sp. nov. 86, 87 habitus 88 - 91 aedeagus, ventral (88, 89) and lateral (90, 91) views. Scale bars: 1 mm (86, 87); 0.2 mm (88 - 91).

Figures 92 - 95. Thoracostrongylus bicolor sp. nov. 92 - 95 aedeagus from Guangxi, ventral (92, 93) and lateral (94, 95) views. Scale bars: 0.2 mm.

Figures 108 - 122. Distribution map of Thoracostrongylus species of China 108 T. acerosus 109 T. aduncatus 110 T. birmanus 111 T. diaoluoensis 112 T. formosanus formosanus 113 T. formosanus flavipes 114 T. fujianensis 115 T. malaisei 116 T. miyakei 117 T. sarawakensis 118 T. velutinus 119 T. baishanzuensis 120 T. bicolor 121 T. brachypterus 122 T. chrysites. Triangle, localities of specimens examined in this paper; square, localities of specimens listed in previous papers. Red, doubtful localities; blue, trustede localities.