Batrisini Reitter 1882
Creators: name: Yin, Zi-Wei
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae

description: Key to Tibetan genera of Batrisini
1 Whole dorsal surface of body bears coarse punctation; each elytron with four basal foveae; aedeagus simple, plate-like (Figs 52–61)............................................................................... Sathytes Westwood
- Dorsal surface of body finely punctate to glabrous, or only parts of body coarsely punctate; each elytron with one to three basal foveae; aedeagus usually composed of median and dorsal lobes................................................. 2
2 Each elytron with two basal foveae; pronotum with transverse antebasal sulcus connecting lateral antebasal foveae; aedeagus with articulated dorsal lobe............................................................................. 3
- Each elytron with one or three basal foveae; pronotum lacking transverse antebasal sulcus; aedeagus with partially fixed dorsal lobe................................................................................................ 6
3 Tergite 1 (IV) with pair of oblique inner marginal carinae (Fig. 76).................................. Trisinus Raffray
- Tergite 1 (IV) lacking inner marginal carinae............................................................... 4
4 Aedeagus with small, constricted basal capsule (Fig. 29)..................................... Batriscenaulax Jeannel
- Aedeagus with large or extended basal capsule.............................................................. 5
5 Scape lacking inner glandular structure at apicolateral margin; dorsal lobe of aedeagus erect (Figs 2–28)................................................................................................... Arthromelodes Jeannel
- Scape with inner glandular structure at apicolateral margin; dorsal lobe of aedeagus recumbent or strongly bent at base (Figs 30–37)................................................................................ Batrisiella Raffray
6 Head and pronotum strongly transverse; each elytron with one basal fovea (Yin & Li 2015a: figs 1, 3)..................................................................................................... Hingstoniella Jeannel
- Head at most moderately transverse; pronotum usually with length and width subequal; each elytron with three basal foveae 7
7 Head lacking carina or sulcus; antennomeres moniliform; pronotum lacking discal or lateral longitudinal sulcus/carina..... 8
- Head carinate or sulcate; antennomeres non-moniliform; pronotum with discal or lateral longitudinal sulcus/carina........ 9
8 Body glabrous; head sub-trapezoidal, with trichome at posterolateral margin (Yin et al. 2012b: fig. 1; Yin & Li 2013a: fig. 1)....................................................................................... Tangius Yin & Li
- Body pubescent; head sub-rectangular, lacking trichome at posterolateral margin (Yin 2021: fig. 1)....................................................................................................... Myrmicophila Yin & Li
9 Pronotum with pairs of sinuate discal and lateral longitudinal sulci; metatibia of male with long pencil of setae at apex (Figs 38, 39)................................................................................... Batrisodes Reitter
- Pronotum at most with one pair of longitudinal sulci, often with pair of discal longitudinal carinae; metatibia lacking or with short tuft of setae at apex.............................................................................. 10
10 Pronotum with pairs of anterolateral and antero-hypomeral foveae (Fig. 40E).................. Coryphomimus gen. nov.
- Pronotum lacking anterolateral or antero-hypomeral foveae................................................... 11
11 Elytra with inner two basal foveae close, disc coarsely punctate (Figs 43–45).................... Coryphomodes Jeannel
- Elytra with inner two basal foveae clearly separated, disc finely punctate........................................ 12
12 Body length less than 1.7 mm; vertex strongly convex; lacking lateral frontal fovea; pronotum with short discal longitudinal carina present only at basal 1/2; lacking external male sexual characters (Figs 46–48)................. Gyrongita gen. nov.
- Body length usually no less than 2.0 mm; lateral frontal fovea present; vertex weakly to moderately convex; pronotum often with complete discal carina; male sexual characters usually present on antennae or legs, rarely on head (Figs 62–74)............................................................................................ Tribasodites Jeannel
description: Published as part of Yin, Zi-Wei, 2022, The Batrisini of Tibet: unveiling an enigmatic ant-loving beetle diversity at Earth's " Third Pole " (Coleoptera, Staphylinidae, Pselaphinae), pp. 1-211 in Zootaxa 5111 (1) on pages 8-9, DOI: 10.11646/zootaxa.5111.1.1, http://zenodo.org/record/6340729