Lisubatrus, Yin, 2017

Yin, Zi-Wei, 2017, Lisubatrus dongzhiweii gen. et sp. nov. from the Gaoligong Mountains, China (Coleoptera: Staphylinidae: Pselaphinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 57 (2), pp. 593-601 : 597-598

Key to Lisubatrus gen. nov. and allied genera

1 Head lacking row/tuft of setae at the posterolateral margins. ......................................... 2

– Head with row/tuft of setae at the posterolateral margins. .............................................. 3

2 Vertex with distinct U-shaped sulcus connecting foveae, and longitudinal median carina; antennomere V simple in males; elytra lacking fovea. ....................................................... ..................................................... Maajappia Nomura, 2010 ( Fig. 4D ; 1 sp. from Japan)

– Vertex lacking U-shaped sulcus as well as longitudinal median carina; antennomere V modified in males; each elytron with three large basal foveae. .......................................... ............................................... Myrmicophila Yin & Li, 2011 ( Fig. 4E ; 1 sp. from China)

3 Antennomeres elongate (except for antennomeres X); distinct antennal club formed by apical three antennomeres; elytra lacking basal fovea; pronotum with pair of antebasal spines. .................................................... Lisubatrus gen. nov. ( Fig. 1; 1 sp. from China)

– Antennomeres moniliform; antennal club indistinct; each elytron with one to three basal foveae; pronotum lacking antebasal spines/tubercles. .................................................... 4

4 Head strongly transverse; each elytron with one basal fovea. ........................................... ..................... Dendrolasiophilus Nomura, 2010 ( Fig. 4A; 4 spp. from China and Japan)

– Head as long as to slightly longer than wide; each elytron with three basal foveae. ...... 5

5 Pronotum trapezoidal, widest near base; elytra lacking discal striae; area between elytra and abdomen not constricted; tergite IV much shorter than tergites V–VII combined. ..... ...................................................... Songius Yin & Li, 2010 ( Fig. 4B; 4 spp. from China)

– Pronotum about as long as wide, widest at middle, with round lateral margins; elytra with short discal striae; area between elytra and abdomen constricted; tergite IV longer than tergites V–VII combined. ................................................................................................... ...................................... Tangius Yin & Li, 2012 ( Fig. 4C ; 2 spp. from China and India)

Figures

Fig. 4. Representatives of the Dendrolasiophilus group of genera.A – Dendrolasiophilus wenhsini Yin & Li, 2013, female. B – Songius hlavaci Zhao, Yin & Li, 2010, male. C – Tangius indicus Yin & Li, 2013, male. D – Maajappia omotonis Nomura, 2010, male. E – Myrmicophila tangliangi Yin & Li, 2011, male (Figs 4A–C reproduced from YIN & LI 2013a,b, 2015, respectively). Scale bars: 0.5 mm.

Fig. 1. Habitus of Lisubatrus dongzhiweii gen. & sp. nov., male in dorsal (A) and dorsolateral (B) views. Scale bars: 0.5 mm.

Fig. 2. Morphological details of Lisubatrus dongzhiweii gen. & sp. nov., male. A – left antenna. B–C – head and pronotum, in dorsal (B), and lateral (C) views. D – right elytron. E – meso- and metaventrite. F – abdomen in dorsal view, showing tergites IV–VII. Scale bars: 0.3 mm in A, F; 0.2 mm in B–E.