Scaphisoma convexum Say, 1825

Löbl, Ivan, Leschen, Richard A. B. & Warner, William B., 2021, Scaphisomatini of Arizona (Coleoptera, Staphylinidae, Scaphidiinae) collected by V-Flight Intercept Traps, Revue suisse de Zoologie 128 (1), pp. 173-185 : 180

Scaphisoma convexum Say, 1825

Material examined: WBWC; 1 female; Arizona, Cochise Co. Huachuca Mts. , 0.8 rd. mi. SW Reef, 31.4238°N, 110.2991°W, July 4-24, 2019.

Remarks: The species is in external characters similar with S. commune Löbl, 1997 [a replacement name for the homonymous S. castaneum (Motschulsky, 1845) ]. The puncture pattern of the metaventrite and ventrite I enables reliable identification. In addition, the aedeagi of these species differ drastically: S. commune possesses a long, thin flagellum extruded in repose while S. convexum has a robust rod as illustrated in Leschen et al. (1990). Scaphisoma convexum can be collected in numbers from basidiomycete fungi ( Newton, 1984; Leschen et al., 1990).