Diartiger songxiaobini

Yin, Zi-Wei & Li, Li-Zhen, 2013, Notes on synonymy of Diartiger Sharp with Microdiartiger Sawada (Coleoptera: Staphylinidae: Pselaphinae), with description of two new species from East China, Zootaxa 3717 (3), pp. 369-376 : 375-376

Diartiger songxiaobini (Yin & Li, 2010), new combination

Microdiartiger songxiaobini Yin & Li, 2010: 369.

Type material examined. Holotype, ♂, labeled ‘ China: Zhejiang Prov. West Tianmushan Mt., elev. 1100 m, 1.v.2009, Xiao-Bin Song leg.’ (SNUC). Paratypes, 1 ♂, 1 ♀, same label data as holotype (SNUC).

Additional material examined. 1 ♂, 5 ♀♀, labeled ‘ China: SW Anhui, Liu’an City, Yue’xi County, Yaoluoping N. R., 30°58′24″N, 114°03′47″E, path near Zhaoguan, under rock, colony of Lasius sp., ca. 1235 m, 20.vi.2013, Dai & Peng leg. (SNUC)’; 1 ♂, labeled ‘ China: Jiangxi, Fengxin County, Baizhang Village, path in Mt., nr. Village, 28°41′41″N, 114°46′52″E, ca. 840 m, sifted, 15.vi.2013, Jia-Yao Hu leg.’ (SNUC).

Distribution. East China: Zhejiang, Anhui, Jiangxi. (new for Anhui and Jiangxi)

Comments. The populations from Anhui and Jiangxi can be readily identified as Diartiger songxiaobini because the male features are identical to those of specimens from the type locality. It is worthy of a note that the type material of this species was collected from colonies of Pachycondyla chinensis .

Nomenclatural notes. An incorrect spelling of the specific epithet occurred twice in Yin et al. 2010 (page 637, Abstract, line 3; page 642, figure caption, line 1), as ‘ M. pachycoincolatus ’, which is an incorrect original spelling and an unavailable name in zoological nomenclature.

Key to males of Diartiger from China

1 Dorsal surface of head and pronotum sparsely covered with thick, suberect setae; mesotrochanters lacking spine. (East China: Zhejiang)...................................................................... D. songxiaobini (Yin & Li)

- Dorsal surface of head and pronotum covered with dense, fine setae; mesotrochanters with spine of various forms......... 2

2 Fourth antennomeres more than twice length of third antennomeres ( Fig. 2 A); mesofemora with sharp basoventral spine ( Fig. 2 C), mesotibiae with triangular tubercle near middle ( Fig. 2 C); metatibiae largely concave along ventral margin ( Fig. 2 D). (East China: Anhui)............................................................ D. dentatus Yin & Li, sp. n.

- Fourth antennomeres less than twice as long as third antennomeres ( Fig. 3 A; Nomura 1997: 99, Fig. 4 ‘ km.’); mesofemora lacking spine, mesotibiae lacking tubercle near middle ( Fig. 3 C; Nomura 1997: 101, Fig. 6‘ km.’); metatibiae simple, not concave ( Fig. 3 D)........................................................................................... 3

3 Mesotrochanters with thick triangular ventral projection ( Fig. 3 C); aedeagal median lobe with very short, membranous apical lobe ( Figs 3 J–L). (East China: Anhui)........................................ D. yaoluopingensis Yin & Li, sp. n.

- Mesotrochanters with large, long ventral projection (Nomura 1997: 101, Fig. 6‘ km.’); aedeagal median lobe with large apical lobe (Nomura 1997: 107, Fig. 12‘ km.’). (Southwest China: Yunnan)........................ D. kunmingensis Nomura

Acknowledgements

We thank Zhong Peng, Cong-Chao Dai and Jia-Yao Hu for the collection of specimens and providing biological data. Comments from Peter Hlaváč (Košice, Slovakia) and Shûhei Nomura (Tsukuba, Japan) improved the manuscript. Christopher Carlton (Louisiana State Arthropod Museum, U.S.A.) corrected the English narrative. The present study is supported by the National Science Foundation of China (No. 31172134), and Shanghai Normal University (Sk 201242, DZL125).

Figures

FIGURE 2. Diagnostic features of Diartiger dentatus. A. Antenna. B. Fore leg. C. Mid leg. D. Hind leg. E. Left elytron. F. Elytral trichome, enlarged. G. Meso- and metaventrite. H. Left half of abdomen. I. Abdominal trichome, enlarged. J. Aedeagus, in dorsal view. K. Same, in lateral view. L. Same, in ventral view. Scales: all 0.2 mm, except F, I = 0.1 mm.

FIGURE 3. Diagnostic features of Diartiger yaoluopingensis. A. Antenna. B. Fore leg. C. Mid leg. D. Hind leg. E. Left elytron. F. Elytral trichome, enlarged. G. Meso- and metaventrite. H. Left half of abdomen. I. Abdominal trichome, enlarged. J. Aedeagus, in dorsal view. K. Same, in lateral view. L. Same, in ventral view. Scales: all 0.2 mm, except F, I = 0.1 mm.

FIGURE 4. A. General habitat of Diartiger dentatus and D. yaoluopingensis. B. Diartiger dentatus and D. yaoluopingensis in a nest of Lasius sp. C. A living Diartiger dentatus.