Apimela fusciceps (Casey) Klimaszewski, Jan, Webster, Reginald P., Zanetti, Adriano & Bourdon, Caroline, 2017

Klimaszewski, Jan, Webster, Reginald P., Zanetti, Adriano & Bourdon, Caroline, 2017, First Canadian records of genera Apimela Mulsant & Rey and Gyronycha Casey from New Brunswick: description of two new species and new provincial distribution records (Coleoptera, Staphylinidae, Aleocharinae), ZooKeys 672, pp. 35-48 : 35

Apimela fusciceps (Casey) comb. n. Figs 1-8

Gyronycha fusciceps Casey, 1894: 376. Lectotype (female). USA: N.Y. [New York]; fusciceps Casey; TYPE USNM 38789; Casey bequest 1925; our lectotype designation label (USNM). There is an unpublished Gusarov’s lectotype designation label. The genitalia were probably treated by KOH as they are barely recognizable and the spermatheca is missing. Lectotype - present designation. PARALECTOTYPE: USA: N.Y. [New York]; fusciceps Casey; TYPE USNM 38789, fusciceps -2; Casey bequest 1925; our paralectotype designation label (USNM) 1 male. There is an unpublished Gusarov’s paralectotype label. The genitalia were probably treated by KOH as they are barely recognizable.

Gyronycha lepida Casey, 1911: 217, syn. n. Lectotype (male). USA: N.C. [North Carolina]; lepida Casey; TYPE USNM 38790; Casey bequest 1925; our lectotype designation label (USNM). There is an unpublished Gusarov’s lectotype designation label. Lectotype - present designation. PARALECTOTYPES: N.C. [North Carolina]; lepida Casey; TYPE USNM 38790, lepida -2; Casey bequest 1925; our paralectotype designation label (USNM) 1 female [there is an unpublished Gusarov’s paralectotype designation label]; N.C. [North Carolina]; TYPE USNM 38790, lepida -3 Casey; Casey bequest 1925; our paralectotype designation label (USNM)1 female [there is an unpublished Gusarov’s paralectotype designation label].

Material examined.

Canada, New Brunswick, Carleton Co., Belleville, Meduxnekeag Valley Nature Preserve, 46.1944°N, 67.6832°W, 2.VI.2008, R.P. Webster, coll.// River margin, under cobblestones in sand/gravel, among scattered grasses (RWC, LFC) 2 females; Belleville, Meduxnekeag Valley Nature Preserve, 46.1942°N, 67.6832°W, 9.VI.2008, R.P. Webster, coll. // River margin, under cobblestones among grasses away from water’s edge (RWC) 2 females; Belleville, Meduxnekeag Valley Nature Preserve, 46.1921°N, 67.6815°W, 11.VI.2010, R.P. Webster, coll. // River margin, under cobblestones set in sand (RWC) 1 female; Belleville, Meduxnekeag Valley Nature Preserve, 46.1941°N, 67.6830°W, 31.V.2013, R.P. Webster, coll. // River margin, under small rock (RWC) 1 male.

Diagnosis.

Body length 3.0-3.4 mm, subparallel, yellowish brown, head and scutellar region of elytra dark brown, strongly glossy, forebody with fine and moderately dense pubescence, punctation fine; head subquadrate, eyes large and about as long as postocular region of head, posterior angles rounded, pubescence directed straight and obliquely anteriad; antennomeres V-X slightly to strongly transverse, head broader than pronotum; pronotum slightly transverse, posterior angles angular; elytra elongate, at suture longer than pronotum, and about one fourth wider than pronotum, abdomen subparallel, with first visible four tergites deeply impressed basally, males lacking tubercles on first and fifth visible tergites. MALE. Median lobe of aedeagus with tubus strongly produced ventrally, in lateral view its venter sinuate with two more or less visible minute teeth in apical third, internal sac with complex structures as illustrated (Figs 2 [NB], 3 [holotype]); tergite VIII truncate apically (Fig. 4); sternite VIII produced apically and sharply pointed (Fig. 5). FEMALE. Spermatheca S-shaped, capsule tubular, slightly arched and with apical narrow, tubular projection coiled apically, stem sinuate and twisted (Fig. 8); tergite VIII truncate apically (Fig. 6); sternite VIII rounded apically (Fig. 7).

Distribution.

Formerly known from New York and North Carolina in the United States ( Casey 1894, 1911). Here, reported in New Brunswick, Canada, for the first time.

Collection and habitat data.

In New Brunswick, this species was found along a river margin under cobblestones set in sand/gravel, often in areas with scattered grasses, sometimes away from water’s edge. Adults were collected in late May and June.

Comments.

This species belongs to a distinct species group and has spermatheca type similar to that of A. attenuata (Casey).