Bolitogyrus apicofasciatus Brunke

Brunke, Adam J. & Solodovnikov, Alexey, 2014, A revision of the Neotropical species of Bolitogyrus Chevrolat, a geographically disjunct lineage of Staphylinini (Coleoptera, Staphylinidae), ZooKeys 423, pp. 1-113 : 35-36

Taxon classification Animalia Coleoptera Staphylinidae

Bolitogyrus apicofasciatus Brunke sp. n. Figs 6D, 11H, 14B, 18 F–H, 23O, 26L, 30B (map)

Type locality.

MEXICO, Chiapas, 2 km SE Custepec.

Type material.

Holotype ♂ (SEMC): MEXICO, Chiapas, 2 km SE Custepec, 15.72219°N, 92.94640°W, 1610 m, 19-V-2008, beating vegetation, cloud forest, LLAMA08 Go-A-02-3-03 [white printed label] / SM0822854 [white barcode label] / SUBJECT TO RETENTION AGREEMENT w/ ECOSUR, see KUNHM acc. # 2010-EN-089, to be removed with fulfilled [green printed label] / Holotype, Bolitogyrus apicofasciatus Brunke, sp. n. [red printed label].

Paratypes (3♀ SEMC): same as holotype except: 15.72236°N, 92.94585°W, 1620 m, mesophil forest, LLAMA08 Go-A-02-3-02, SM0839743 (SEMC). GUATEMALA:Quetzaltenango, 12.5 km SW Zunil, 1520 m, 21 June 1993, R. Anderson, #93-11, second-growth, SM0037995, 1 ♀ (SEMC) [missing head and pronotum], same except: 20 June 1993, J. Ashe, R. Brooks, #067, ex. Auricularia sp., SM0037984, 1 ♀ (SEMC).

Diagnosis.

Within Bullatus Lineage: one setose puncture in dorsal row of pronotum; elytra dark, without bright metallic reflection; scutellum dark, not reddish; elytra without strigose patch; femur with dark band separated from the apex by a distance distinctly shorter than half the length of the band (Fig. 11H).

Description.

Measurements ♂ (n=1): HW/HL 1.45; PW/PL 1.50; EW/EL 1.14; ESut/PL 1.00; PW/HW 1.03; forebody length 3.5 mm.

Measurements ♀ (n=2): HW/HL 1.41-1.43; PW/PL 1.36-1.45; EW/EL 1.18-1.19; ESut/PL 0.92-1.00; PW/HW 1.07-1.10; forebody length 4.2-4.5 mm.

Similar to Bolitogyrus bullatus and differing only in the following: pronotum dark brown throughout, abdominal segments (except VIII) broadly paler at apex, without paler lateral stripes, antennomeres I–X grading from reddish-yellow (I) to dark brown, apical segment not or barely paler than previous, brown to dark brown; procoxa light yellow, meso- and metacoxa yellowish-brown (male) or darker, brown (female); profemur without (male) or with short, nearly apical dark band, meso and metafemur with dark band close to apex, band on metafemur separated from the apex by a distance distinctly shorter than half the length of the band; median frontal impression present as in Bolitogyrus bullatus but sometimes obscured by irregular sculpture; central protuberance without fine median sulcus, base of head without distinct posterior protuberances, punctures of head impressed but these impressions not forming sulci, disc of pronotum markedly glossy, with very few punctures; protuberance of pronotum only weakly visible in lateral view; macrosetae of elytra relatively short, not distinct from overall surface sculpture in lateral view; abdominal sternites with relatively coarse microsculpture, interspaces wider than lines; median lobe in lateral view gently curved ventrad from base, apical portion more slender and more strongly curved ventrad near apex (Fig. 18G), similar to Bolitogyrus bullatus in parameral view (Fig. 18F), paramere in parameral view not divided apically but with median suture, distinctly extended to midlength (Fig. 18F), paramere slightly shorter than median lobe; paramere with peg setae arranged in a pair of lateral rows, which are wider (2-3 peg setae wide) near apex and base of row (Fig. 18H); male sternite VIII with transverse basal line complete; male sternite IX more densely setose, asymmetrical at base and with much shallower emargination at apex than Bolitogyrus bullatus (Fig. 23O); female tergite X strongly constricted at base, with broadly rounded apex (Fig. 26L); basal margin of laterotergal sclerites fused and thickened across base of tergite X (Fig. 26L); female laterotergal sclerites strongly expanded at base and overlapping with tergite X (Fig. 26L).

Distribution.

Figure 30B. Known from Chiapas, Mexico and Quetzaltenango, Guatemala.

Bionomics.

Specimens were collected in cloud and mesophil forests at 1520-1620 m, by beating vegetation and from an Auricularia (jelly) fungus, during May and June.

Etymology.

The specific epithet means 'apical band’ and refers to the dark color band of the hind femur, which is situated distinctly closer to the apex than in Bolitogyrus bullatus .

Comments.

Within its distribution, Bolitogyrus apicofasciatus cannot be confused with any described species of Bolitogyrus .