Omphreus

Ćurčić, Srećko B., Waitzbauer, Wolfgang, Zolda, Pamela & Ilić, Nastas, 2008, Two new high-altitude species of the genus Omphreus Dejean (Coleoptera: Carabidae: Harpalinae) from Serbia, Zootaxa 1926, pp. 20-26 : 24-25

Key to Omphreus from Serbia

1 Head well constricted behind eyes..............................................................................................................2

- Head moderately constricted behind eyes..................................................................................................3

2 Pronotum as long as broad ( Serbia, Montenegro) ................................ O. (O.) bischoffi Meschnigg, 1934

- Pronotum longer than broad ...................................................................................................................... 4

3 Mandibles widened proximally; first antennomere sharply widening distally; fore pronotal angles rounded and hind pronotal angles almost right; lateral pronotal margins sinuated posteriorly; lateral pronotal furrows narrow and shallow; lateral elytral margins sub-parallel; four setiferous punctures in the seventh interstrial space; median lobe short, narrower distally; parameres more rounded; basal bulb widened distally; gonocoxites IX smaller and thinner, each with an acute apex ( Serbia) ...... O. (O.) ovcarensis n. sp.

- Mandibles not dilated proximally; first antennomere gradually widening distally; fore pronotal angles protracted and hind pronotal angles obtuse; lateral pronotal margins distinctly concave posteriorly; lateral

pronotal furrows wide and deep; lateral elytral margins arcuated; five elytral median setiferous punctures in the seventh interstrial space; median lobe long, wider distally; parameres more elongated; basal bulb not widened distally; gonocoxites IX longer and wider, each with a rounded apex ( Serbia) ....................... .................................................................................................................... O . (O.) serbooccidentalis n. sp. 4 Lateral pronotal margins basally toward hind angles somewhat narrowed or almost parallel, not divergent ( Serbia, Bosnia-Herzegovina, Montenegro, Albania) ...................................... O . (O.) morio Dejean, 1828 (- First antennomere club-like widened distally, mostly shorter than the following three antennomeres together; lateral pronotal margins rounded basally; elytra short ( Serbia) .................................................... .......................................................................................................... O . (O.) morio serbicus Winkler, 1933 - First antennomere gradually widened distally, as long as the following three antennomeres together; lateral pronotal margins parallel basally; elytra elongated ( Serbia, Albania).................................................... .................................................................................................. O. (O.) morio albanicus Apfelbeck, 1906 )

- Lateral pronotal margins basally toward hind angles divergent ( Macedonia, Serbia) ................................ .................................................................................................................. O . (O.) gracilis Apfelbeck, 1918