Triomicrus ludificator Löbl, Kurbatov and Nomura

Shen, Jia-Wei & Yin, Zi-Wei, 2016, The genus Triomicrus Sharp from central and southwestern China (Coleoptera: Staphylinidae: Pselaphinae), and a revised key to the Chinese species, Zootaxa 4097 (3), pp. 369-380 : 373-375

Triomicrus ludificator Löbl, Kurbatov and Nomura

( Figs 3–5 )

Triomicrus ludificator Löbl, Kurbatov and Nomura, 1998: 75 .

Type material examined. Paratype (in MHNG, Fig. 5 ): ♂, three printed labels: ‘ China: Sichuan, Xiling Mt., 1600 m, litter, 4.08.96, leg. S. Kurbatov / Triomicrus ludificator sp. n. Kurbatov & Löbl / Paratype (yellow)’.

Other material examined. (9 ♂♂, 13 ♀♀, all in SNUC). 1 ♂, labeled ‘ China: Sichuan, Tianquan (天全县), Er’lang Shan (二郎山), 29°52’23’’N, 102°48’34’’E, old winding road, leaf litter, sifted, 2200–2300 m, 13.vii.2012, Z. Peng & Z.-W. Yin leg.’; 4 ♂♂, 4 ♀♀, labeled ‘ China: Sichuan, Dujiangyan City, Qingcheng Shan (青城山), Baiyun Temple (白云寺), 30°56’56’’N, 103°28’28’’E, mixed leaf litter, sifted, 1650 m, 27.vii.2009, Yin, Peng & Dai leg.’; 1 ♂, 2 ♀♀, also from Qingcheng Shan, ‘ 1700 m, 30.vii.2009, Yin, Peng & Dai leg.’; 3 ♂♂, 7 ♀♀, labeled ‘ China: Sichuan, Dayi County (大邑县), Xiling Xueshan (西岭雪山), 30°41’59’’N, 103°12’10’’E, mixed leaf litter, sifted, 2015 m, 29.vii.2015, Jiang, Peng, Tu & Zhou leg.’.

Comments. Males of this species can be easily separated from those of all other congeners by a combination of the following characters: antennomeres XI with a distinct disc-like protuberance near middle; abdominal sternite VII with apical lamina ( Fig. 3 D) composed of two sclerites, right one widest near base, gradually narrowing toward apex. This species was previously described from the Xiling Mt., here we report it also from the Er’lang Shan and Qingcheng Shan. Illustrations of sternite VII ( Figs 3 D, 4A, 4B) and the aedeagus ( Figs 3 E, 4C, 4D) of each population are provided here.

Distribution. Southwest China: Sichuan.

Figures

FIGURE 3. Diagnostic characters of male Triomicrus ludificator. A. Habitus. B. Antennal club, in dorsal view. C. Same, in lateral view. D. Abdominal sternites VII – VIII. E. Aedeagus, in dorsal view. Scale bars: A = 0.5 mm; B, C = 0.2 mm; D, G = 0.1 mm.

FIGURE 4. Diagnostic characters of male Triomicrus ludificator from various localities. A. Abdominal sternites VII – VIII (population from Qingcheng Shan). B. Same (population from Xiling Xueshan). C. Aedeagus, in dorsal view (population from Qingcheng Shan). D. Same (population from Xiling Xueshan). Scale bars: A – D = 0.1 mm.

FIGURE 5. Dorsal habitus of a paratype of Triomicrus ludificator. Scale bar: 0.5 mm.