Mimogonia, Coiffait, 1978

Irmler, Ulrich, 2013, New species of the genus Mimogonia and Holotrochus from South America (Coleoptera: Staphylindae: Osoriinae), Acta Entomologica Musei Nationalis Pragae 53 (1), pp. 155-176 : 160

Key to the Brazilian Mimogonia

In total, ten species of Mimogonia are recorded from Brazil. The following key is provided to identify the Brazilian species based only on outer characters. Despite of that, the examination of the aedeagus is needed for a precise identification, because numerous new species may be expected.

1. Very small species, maximally 1.8 mm long. ................................................................. 2

– Larger species, at least 1.9 mm long. ............................................................................. 3

2. Whole body yellow. ................................................................. M. unicolor Irmler, 1981

– Head, posterior edge of elytra and abdominal segments VII and VIII brown. ................ .................................................................................................... M. tricolor Irmler, 1981

3. Large species, 2.8 mm long. ................................................ M. amazonica Irmler, 2010

– Smaller species, 1.9–2.4 mm long. ................................................................................ 4

4. Eyes very large and distinctly prominent, head/pronotum width ratio 1.18. .................... ................................................................................................... M. longipes Irmler, 2010

– Eyes smaller, head/pronotum width ratio smaller than 1.00. ......................................... 5

5. Antennae shorter than head and pronotum combined. ................ M. similis Irmler, 1981

– Antennae at least as long as head and pronotum combined. .......................................... 6

6. Microsculpture of pronotum weak or absent, surface at least moderately shiny. .......... 7

– Microsculpture of pronotum distinct; surface matte. ..................................................... 9

7. Elytra longer than wide, microsculpture of elytra distinct. ............ M. adisi Irmler, 2007

– Elytra quadrate or wider than long, microsculpture of elytra weak. .............................. 8

8. Elytra wider than long, dark brown, elytra much wider than pronotum, pronotum/elytra width ratio 0.77. ................................................................................. M. duckei sp. nov.

– Elytra quadrate, light reddish brown, elytra only slightly wider than pronotum, pronotum/ elytra width ratio 0.86. ........................................................... M. paraensis Irmler, 2010

9. Sides of pronotum parallel in anterior half. ................................... M. marquesi sp. nov.

– Sides of pronotum widest in middle. ..................................... M. antennata Irmler, 1981