Glaresis imitator Gordon and Hanely, 2014

Gordon, Robert D. & Hanley, Guy A., 2014, Systematic revision of American Glaresidae (Coleoptera: Scarabaeoidea), Insecta Mundi 2014 (333), pp. 1-91 : 17

Glaresis imitator Gordon and Hanely , new species

Description. Male. Length 4.4 mm, width 2.4; body form robust, slightly widened from elytral base to apical 1/3 ( Fig. 9A ). Color yellowish brown. Head shiny, clypeus and anterior 1/2 of frons with large surface tubercles, posterior 1/2 of frons and vertex finely densely microreticulate, setae short, barely visible. Clypeal apex slightly sinuate, with narrow median emargination, very large, apically bifid tubercle present at each side of emargination, tubercles narrowly separated, apex lateral to large tubercles with small, dense, evenly spaced tubercles, appearing serrate, lateral angles rounded, outwardly toothed ( Fig. 9B ). Mandible pair symmetrical; mesal tooth strong; lateral prominence strong, pronounced; outer margin abruptly rounded. Pronotum with all foveae weakly impressed except fovea laterally on anterior margin and on each side medially near lateral margin strongly impressed; surface finely microreticulate, somewhat shiny, with small, sparse, setae-bearing carinae, carinae short, straight. Elytra with surface somewhat shiny, densely, strongly microreticulate; striae convex, feebly carinate, carinal segments separated by width of carinal segment, each with seta nearly as long as segment; intervals with deep, round punctures ( Fig. 9C ). Metasternum long, feebly shiny, finely, densely microreticulate, surface medially flat without median carina, lateral surface with sparse, short ridges laterally ( Fig. 9D ); without metasternal groove. Lateral protibial teeth unevenly spaced, basal 2 teeth close together. Mesotibia with 5 spines laterally, tibia strongly projecting at apex ( Fig. 9D ). Posterior metatrochanteral margin without teeth, apical angle without tooth; posterosuperior surface of metatrochanter with single large tooth not visible directly in ventral view ( Fig. 9G ). Metafemoral surface with widely spaced, elongate, seta-bearing tubercles, strongly microreticulate; width to length ratio 1.0:1.4, with narrow flange on anterior margin, with large, blunt tooth at angle near trochanter; posterosuperior margin without tooth ( Fig. 9G ). Metatibia broadly triangular, surface entirely microreticulate, outer margin without posteromedian projection, with series of small teeth from base to slightly beyond middle, teeth increasing in size from base with last 3 median teeth largest, usually penultimate tooth larger than all others, inner margin smooth, pubescent ( Fig. 9F ). Apex of 5th abdominal ventrite truncate. Genitalia long, basal piece about as long as parameres, proximal end curved; median lobe slightly shorter than paramere, tapered from base to acute apex, wider than paramere at middle, curved upward apically before acute apex; parameres feebly curved in lateral view, apex bluntly rounded ( Fig. 9E ).

Female. Apex of 5th abdominal ventrite feebly emarginate.

Variation. Length 4.3 mm to 4.4 mm.

Type material. Holotype male: Mexico. Sonora: Mexico, Sonora, Puerto Libertad, 4/29/68, A. Kumlin ( USNM) . Paratype, 1: same data as holotype. ( USNM).

Remarks. This species is a macho version of G. dakotensis , but has the tuberculate clypeus and frons of G. phoenicis . It is distinguished from either species by the extremely large tubercle on each side of apical clypeal emargination; very large tubercles on surface of clypeus and frons; reduced pronotal ridges; somewhat shiny pronotal surface; and shiny, strongly microreticulate elytral surface. The mesotibia figured has all of the lateral spines broken off, but there should be 5 visible.

One male and a female were the only specimens available for study.

Etymology. The specific name is the Latin imitator , meaning mimic, in reference to the strong resemblance to G. dakotensis .

Figures

Figures 9A-9G. Glaresis imitator, new species. A) Habitus view. B) Clypeus and head surface. C) Elytral striae. D) Metasternum and mesotibia. E) Male genitalia. F) Metaleg and trochanter, dorsal view. G) Metaleg and trochanter, ventral view.