Aleochara Gravenhorst, 1802

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 : 2

Genus Aleochara Gravenhorst, 1802

( Fig. 1–27 )

Klimaszewski 1984

Diagnosis. Body length very variable within same species, 1.8–13 mm; broadly oval or subparallel, robust; tarsal formula 5-5-5 (4-5- 5 in subgenus Tinotus Sharp ); last palpomere of maxillary and labial palps with pseudosegment; lacinia with tuft of apical setae; ligula small, bilobed apically; mesoventrite varying from non-carinate to completely carinate, depending on subgenus. Male tergite IX divided by tergite X, each half narrowly elongate anteriad and posteriad and bearing ventral strut; median lobe of aedeagus usually consisting of narrowly elongate tubus and moderately-sized bulbus (except some species of subgenus Aleochara ); internal sac with complex sclerites; flagellum from moderately long to several times longer than length of median lobe of aedeagus; spermatheca consisting of capsule, chamber, duct and seminal channel, variably modified in different subgenera.

Biology. Adults are predaceous on larvae, eggs and pupae of cyclorrhaphous Diptera and larvae are ectoparasitoids of dipteran pupae (within the puparium).

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.