Selenophorus ruficollis (Putzeys, 1878)

Rajab, Abubakarsidiq Makame, 2021, Indoor Radio Map localization WiFi fingerprint datasets, The Coleopterists Bulletin 75 (1), pp. 9-55 : 42

Selenophorus ruficollis species group

Recognition. In males, the presence of an elongate structure (lamina) in the ostium of the median lobe is diagnostic for the ruficollis species group which otherwise has the external features of Hemisopalus sensu lato. The three species included have the forebody shiny orange to reddish, contrasting strongly with piceous to black elytra, the latter at least faintly iridescent; pronotum with sides posteriorly convergent to a base much narrower than elytra; pronotal hind angles well defined; elytra with seriate setigerous punctures typical for the genus, not foveate; ABS1 short; intervals moderately convex, at most with sparse punctules. Variable characters among the species include dorsal microsculpture mesh either absent or distinct and stretched; elytral iridescence faint to strong; hind angles distinctly obtuse to sharply subdentate; metatarsi dorsally with pubescence conspicuous or inconspicuously short and sparse; sexual dimorphism + ♂ 1 — ♀ 2 or + ♂ 2 — ♀ 2.

Remarks. Ball and Maddison (1987: 252) transferred S. ruficollis from the genus Amblygnathus Dejean on the basis of its clypeus with anterior margin only weakly emarginate (underlying labral membrane not exposed), the head not sufficiently enlarged, and the endophallus with abundant spines. The authors treated Amblygnathus nigripennis Bates as a junior synonym of S. ruficollis . They recognized that both Amblygnathus and the ruficollis group (monobasic at that time) belong to the “laminate” complex of the selenophorines. The complex was characterized by the presence in the median lobe ostium of an elongated lamina that is typically right-hooked at its apical end. The authors therefore postulated that S. ruficollis is the sister species of genus Amblygnathus .

Selenophorus ruficollis (Putzeys)

Amblygnathus ruficollis Putzeys 1878b: 71 . Type

locality: eastern Colombia. Types: MNHN .

Amblygnathus nigripennis Bates 1884: 276 . Type

locality: Panama. Types: MNHN .

Selenophorus ruficollis is a widespread Neotropical species. Based on our study of five Brazilian specimens [CMNH] previously determined by G. E. Ball, this species differs from S. neoruficollis by the elytra entirely devoid of microsculpture; abdomen much darker (black); pronotum finely rugose basomedially; metatarsi with only sparse, short pubescence; different sexual dimorphism + ♂ 1 — ♀ 2. Endophallus with short slender lamina in the ostium in front of which are 2 short parallel rows of dense spines; more proximally 2 longer rows of sparse noncontiguous spines; in some specimens all the spines widely spaced in 2 long rows. ABL 4.0–5.0 mm. Range: Central America ( Panama) , South America (eastern Colombia, Upper Amazon, Brazil *, Bolivia *) .