Scopaeus opacicollis, Bernhauer, 1942

Bernhauer, Max, 1942, Coleoptera, Staphylinidae Of Guam, Insects of Guam I, Bernice P. Bishop Museum, pp. 41-44 : 43

7. Scopaeus opacicollis , new species.

Dark reddish yellow, elytra somewhat lighter, antennae, palpi and legs clearer pale yellow. Head distinctly wider than prothorax, little longer than wide, posteriorly somewhat widened, almost straight truncate behind, rounded except in the angular arrangement of hind edges, on sides rectilinear, dull, extremely finely and densely shagreenly punctured, in front somewhat less finely and less densely punctured, less dull. Eyes slightly convex; temples approximately three times as long as dorsal longitudinal section of eyes. Antennae quite elongate, not thickened toward the apex, the penultimate segments not or scarcely wider than long. Prothora."C somewhat narrower than elytra, about one fourth longer than wide, moderately flat, widest before middle, feebly rounded at sides, shagreenly punctured like head, dull, with an extraordinarily narrow, fine, somewhat shining median line. Elytra as long as prothorax, parallel-sided, somewhat longer than total width, with promihent shoulders, distinctly rougher with densely shagreened punctures, dull, clothed with yellow hair like the remainder of the body. Abdomen shagreenly punctured, dull. Length, 3.8-4 mm.

Piti , July 27, Swezey .

A medium-sized, uniformly reddish yellow species, near Scopaeus testaceus Motschulsky , easily separated from it however, by the much wider and shorter, posteriorly broader head.