Bergrothia Reitter, 1884

Maghradze, Eteri, Faille, Arnaud, Barjadze, Shalva & Hlaváč, Peter, 2019, A new cavernicolous species of the genus Bergrothia Reitter, 1884 (Coleoptera, Staphylinidae, Pselaphinae) from Georgia, Zootaxa 4608 (2), pp. 371-379 : 378

Key to species of Bergrothia Reitter

Note: This key is modified from Jeannel (1948) and Hlaváč (2004).

1. Eyes absent; Pronotum with fine median sulcus; length: 2.6 mm. Azerbaijan....................... B. lenkorana (Reitter)

- Eyes present, sometimes just with few ommatidia; Pronotum without fine median sulcus............................. 2

2. Head between lateral carinae smooth; ocular spines sharp, visible dorsally; length: male: 2.08 mm, female: 1.90 mm. Georgia.................................................................................... B. adzharica Hlaváč

- Head between lateral carinae rough....................................................................... 3

3. Larger species, longer than 2.75 mm; first visible abdominal tergite (IV) short, much shorter than elytra; legs longer....... 4

- Smaller species, less that 2.7 mm long; first visible abdominal tergite (IV) as long as elytra or longer; legs shorter......... 5

4. Aedeagus with dorsobasal brush of setae present............................................ B. mingrelica (Reitter)

- Aedeagus lacking dorsobasal brush of setae............................................... B. barbakadzei sp. nov.

5. Antennomeres VI and VII transverse; body length: 2 mm. Georgia.................................. B. lederi (Saulcy)

- Antennomeres VI and VII elongate........................................................................ 6

6. Ocular spine very small, not visible in dorsal view; body length: 1.20–2.23 mm. Turkey............ B. solodovnikovi Hlaváč

- Ocular spine long and sharp, visible in dorsal view; body length: 2.6 mm. Turkey and Georgia........... B. saulcyi (Reitter)