Euconnus denticornis

Hlaváč, Peter & Stevanović, Miroslav, 2013, A review of the subgenus Cladoconnus Reitter of the genus Euconnus Thomson (Coleoptera: Staphylinidae: Scydmaeninae) from the Balkan Peninsula, Turkey and Caucasus, Zootaxa 3646 (4), pp. 401-425 : 415

Key to species of the denticornis species group of Cladoconnus of the Balkans, Turkey and Caucasus based on males

1 Antennomere X strongly transverse, 1.4–2.0 as wide as long.................................................. 2

- Antennomere X slightly (1.1) as wide as long, as long as wide or longer than wide................................ 3

2 Large species, body length 2.00– 2.10 mm, antennomere VII and X twice as wide as long, antennomere IX 1.05 times as long as wide, terminal antennomere 2.3 times as long as wide............................. E. (Cladoconnus) similis Weisse

- Small species, body length 1.75 mm, antennomere VII about 1.45 times as wide as long, X 1.4 times as wide as long, antenno- mere IX 1.2 times as wide as long, terminal antennomere 1.85 times as long as wide E. (Cladoconnus) pseudorobustus Franz

3 Antennomeres IX and X transverse, IX 1.2 and X 1.15 times as wide as long, body length 1.75–1.85 mm ............................................................................... E. (Cladoconnus) denticornis Müller et Kunze

- Antennomeres IX and X always longer than wide........................................................... 4

4 Terminal antennomeres very long, 2.4 times as long as wide, body length 1.95–2.05 mm. E. (Cladoconnus) brachati sp. nov.

- Terminal antennomeres shorter, 1.8 – 2.0 times as long as wide................................................. 5

5 Sutural elytral striae very short, just at base of elytra, antennomere IX slightly, 1.05 times as long as wide, body length 2.00 mm.................................................................... E. (Cladoconnus) croaticus sp. nov.

- Sutural elytral striae longer, reaching 1/5–1/3 of elytral length, antennomere IX 1.3–1.7 times as long as wide........... 6

6 Antennomere VII subquadrate, body length 2.00– 2.15 mm ..................... E. (Cladoconnus) winneguthi Apfelbeck

- Antennomere VII transverse, about 1.3 times as wide as long................................................. 7

7 Antennomere X 1.2 times as long as wide, antennomere VIII 2.1 times as long as wide, body length 1.95 mm .................................................................. E. (Cladoconnus) kiesenwetteri kiesenwetteri Kiesenwetter

- Antennomere X about as long as wide, antennomere VIII 1.3–1.7 times as long as wide............................. 8

8 Body length 2.1–2.2 mm, antennomere VIII 1.7 times as long as wide........ E. (Cladoconnus) motschulskii Motschulsky

- Body length 1.85–1.90 mm, antennomere VIII 1.3 times as long as wide.............. E. (Cladoconnus) puniceus Reitter