Exophthalmus margaritaceus Champion 1911

Oblong, black, densely squamose, the scales on the prothorax, scutellum, elytra, and part of the under surface bluish-white, those on the head, rostrum, legs, and last three ventral segments cupreous or opalescent; the surface also set with short, scattered, minute, adpressed hairs. Head and rostrum rugulosely punctate, the rostrum considerably longer than the head and with a smooth median line, followed by an oblong, narrow, inter-ocular fovea, the nasal plate short; eyes very large, moderately convex; antennæ rather slender, the scape extending to just beyond the eyes. Prothorax strongly transverse, feebly bisinuate at the base, arcuately narrowing from the middle forwards, faintly canaliculate; with scattered irregular foveiform punctures intermixed with a fine interstitial punctuation. Scutellum rather large. Elytra elongate-triangular, the apices divergent and mucronate, the humeri prominent; with rows of small conspicuous punctures placed in shallow foveæ, the two supplementary striæ placed between 5 and 6, the interstices feebly convex. Anterior tibiæ strongly, and the intermediate pair feebly, unguiculate.
 
Length 12—13, breadth 4—4 ¼ millim. (♂.)

Hab.NICARAGUA, Chontales (Belt).

Two specimens. This species approaches E. opulentus, but it has more prominent humeri, the seriate punctures on the elytra conspicuous, and the vestiture uniformly bluish-white above, except on the head, where it is cupreous. The obsoletely carinate rostrum and the less convex eyes separate E. margaritaceus from the variety of E. carinirostris with flattened elytral interstices.