OCR Text |
Show 430 MR. MARTIN JACOBS ON NEW SPECIES [Nov. 28, impunctate, the anterior angles not produced; elytra finely punctured anteriorly, a sutural pear-shaped spot below the scutellum and a transverse band below the middle bluish-black ; breast black. Length 5 millim. Head impunctate, deeply foveolate between the eyes, the latter rather closely approached ; antennae with the lower four joints fulvous, the rest piceous, the joints comparatively short; thorax about twice as broad as long, the sides feebly rounded and narrowed anteriorly, the anterior angles thickened and not produced, the sides broadly flattened, the disc impunctate ; scutellum black; elytra very finely punctured, except near the base and within the humeral depression, where the punctuation is stronger, the ground-colour testaceous, a sutural spot below the scutellum and an irregular narrow transverse band below the middle bluish-black, sometimes piceous; the breast black, the abdomen and legs testaceous. Hah. Espirito Santo, Brazil. Two exactly similarly coloured specimens of this species are before me ; the design of the elytra differs from that of any other Oedionychis, and the general size of the insect is comparativel}" small. O e d io n y ch is v e x e zu e l e n s is , sp. n. Flavous, the apical joints of the antennae piceous; head with two black bands; thorax fulvous, impunctate; elytra extremely minutely punctured, with a spot at the shoulders, another near the scutellum, a transverse band before and another below the middle, black. Length 6 millim. Of somewhat flattened, posteriorly slightly widened shape ; the head with a few punctures near the eyes, the latter very large, the diameter of each distinctly wider than the intermediate space; the vertex flavous, with a black stripe at each side, the space between the antennae strongly convex in shape of a ridge, black; the palpi flavous; antennae slender, the lower three joints flavous, the others blackish, third joint slightly shorter than the fourth ; thorax not more than twice as broad as long, the sides nearly straight and slightly narrowed anteriorly, broadly flattened, the anterior angles thickened but scarcely produced, the disc impunctate, fulvous, the flattened portion flavous, the base with an obsolete transverse sulcus ; scutellum flavous ; elytra scarcely perceptibly punctured, flavous, the shoulders with a short, thick black spot, another one of more elongate shape is placed near the scutellum, a transverse, medially constricted black band is situated before and a second one below the middle; the under side and legs are flavous; metatarsus and claw-joint typical. Hah. Venezuela. Differs in the coloration of the head and the position of the elytral markings from any other species. |