Aleochara (Xenochara), Mulsant and Rey, 1874

Klimaszewski, Jan, Webster, Reginald P. & Brunke, Adam, 2017, A new cryptic species of Aleochara Gravenhorst associated with Marmota monax (Linnaeus) burrows and caves in North America (Coleoptera: Staphylinidae: Aleocharinae), Insecta Mundi 2017 (600), pp. 1-11 : 3

Subgenus Xenochara Mulsant and Rey, 1874

( Fig. 1–28 )

Klimaszewski 1984

Diagnosis. Species of this subgenus are distinguished by the following combination of characters: pronotum evenly pubescent ( Fig. 1 , 11 , 20 ); mesoventrite with complete or almost complete carina, carina is as long as mesoventrite or slightly shorter; last article of maxillary palpus varying in length, from 1/3 to 3/4 length of penultimate article.

Remarks. There are many different evolutionary linages in this subgenus that were formerly recognized as species groups (see Klimaszewski 1984) and Xenochara is not likely monophyletic ( Maus 2000). Habitats diverse: various decaying organic matter, rotting mushrooms, moss, animal droppings, and forest litter.

Figures

Figures 1–9. Aleochara castaneimarmotaeKlimaszewski, Webster, and Brunke, sp. nov. 1) Habitus in dorsal view. 2) Enlarged fragment of pronotum showing pubescence and microsculpture. 3) Median lobe of aedeagus in lateral view. 4) Median lobe of aedeagus in dorsal view. 5) Male tergite VIII.6) Male sternite VIII. 7) Female tergite VIII. 8) Female sternite VIII. 9) Spermatheca. Scale bar for habitus = 1 mm, remaining scale bars = 0.2 mm.

Figures 11–19. Aleochara castaneipennis Mannerheim. 11) Habitus in dorsal view. 12) Enlarged fragment of pronotum showing pubescence and microsculpture.13) Median lobe of aedeagus in lateral view.14) Median lobe of aedeagus in dorsal view. 15) Male tergite VIII.16) Male sternite VIII.17) Female tergite VIII.18) Female sternite VIII. 19) Spermatheca. Scale bar for habitus = 1 mm, remaining scale bars = 0.2 mm.

Figures 20–28. Aleochara fumata Gravenhorst. 20) Habitus in dorsal view. 21) Enlarged fragment of pronotum showing pubescence and microsculpture.22) Median lobe of aedeagus in lateral view.23) Median lobe of aedeagus in dorsal view. 24) Male tergite VIII. 25) Male sternite VIII. 26) Female tergite VIII. 27) Female sternite VIII. 28) Spermatheca. Scale bar for habitus = 1 mm, remaining scale bars = 0.2 mm.