Agelosus Sharp, 1889

SMETANA, ALEŠ & DAVIES, ANTHONY, 2000, Reclassification of the North Temperate Taxa Associated with Staphylinus Sensu Lato, Including Comments on Relevant Subtribes of Staphylinini (Coleoptera: Staphylinidae), American Museum Novitates 3287, pp. 1-1 : 1-

Agelosus Sharp, 1889

TYPE SPECIES: Goerius carinatus Sharp ,

1874.

Apecholinus Bernhauer, 1933 (syn. nov.) (type species: Apecholinus kaiseri Bernhauer, 1933 ).

COMMENTS: Members of this genus share the following two character states: (1) infraorbital ridge extended significantly anteriad of postgenal ridge ( fig. 152 ); and (2) superior and inferior lines of pronotal hypomeron distinctly, widely separated at anterior angles of pronotum, with inferior line becoming ob­ solete along prosternal margin, deflected portion of pronotal disc only narrowly visible near anterior angles in ventral view ( fig. 46 ).

Further character states include: most oth­ er characters shared with species of Ocypus (Ocypus) , with following exceptions: labial palpus more broadly expanded apically, up to 1.5 times width at base ( fig. 153 ); lateral margins of mentum relatively long, straight, as in O. (Matidus) brenskei (Reitter, 1884) ; mesosternum with sharp, convex carina behind intercoxal process, as in O. (Ocypus) affinis Wollaston, 1864 .

The type species of Apecholinus agrees in all character states with the members of the genus Agelosus , except for the dual punctation (fine and coarse) on the dorsal side of the head and on the pronotum. The character state of the dual punctation is not considered to be sufficient for retaining a separate taxon for the species.

Figures

Figs. 152–155. 152. Agelosus carinatus, underside of head, showing abbreviated infraorbital ridge (arrow). 153. Agelosus carinatus, last segment of labial palpus. 154. Tasgius melanarius, mesosternal intercoxal process. 155. Tasgius ater, pronotal hypomeron and prosternum.

Figs. 45–52. 45. Philonthus caeruleipennis, superior and inferior marginal lines of pronotal hypomeron not joined, ventral view. 46. Agelosus carinatus, superior and inferior marginal lines of pronotal hypomeron distinctly not joined, ventral view. 47. Ocypus weisei, superior and inferior marginal lines of pronotal hypomeron not quite joined, ventral view. 48. Ocypus tenebricosus, superior and inferior marginal lines of pronotal hypomeron not quite joined, ventral view. 49. Creophilus maxillosus, superior marginal line of pronotal hypomeron becoming obsolete near anterior angles, ventral view. 50. Staphylinus dimidiaticornis, joining of superior and inferior marginal lines of pronotal hypomeron, ventral view. 51. Miobdelus sp., joining of superior and inferior marginal lines of pronotal hypomeron, ventral view. 52. Platydracus stercorarius, superior and inferior marginal lines of pronotal hypomeron not quite joined, appearing as a grooved carina anteriorly, ventral view.