OCR Text |
Show 1 9 0 5 .] OP PHYTOPHAGOUS COLEOPTERA. 4 2 9 punctate, witli two small black spots ; elytra minutely punctured at the base only, a spot on the shoulders, another near the scutellum, and the posterior half black. Var. The thoracic and elytral spots absent. Length 6 millim. Head impunctate, flavous; eyes large, each as broad as the intermediate space, frontal elevations transverse; antennae with the lower joints flavous, the terminal ones more or less black ; thorax twice as broad as long, the sides rounded, narrowed in front and broadly flattened, anterior angles pointed, slightly produced, the surface impunctate, flavous, with two small back spots near the base ; elytra nearly impunctate, except near the base, where there are a few minute punctures, flavous, a spot near the scutellum and one on the shoulders, as well as almost the whole posterior portion, black, but this colour not quite extending to the apex_; under side and legs flavous; prosternum convex between the coxae ; metatarsus very short, claw-joint strongly swollen. Hab. Peru. Of this species I possess two specimens, in one of which some obsolete additional thoracic spots are present and the elytral ones absent, the shape of the posterior black portion is regular; in the other the anterior edge is deeply sinuate, but other differences I cannot find. O e d io n y ch is v a r ia t a , sp. n. Obscure piceous below, above testaceous; thorax impunctate : elytra subdepressed, extremely minutely punctured, the basal margin, a spot on the shoulders, another oblique spot near the scutellum, a transverse narrow band at the middle, and another spot near the apex, black. Length 7 millim. Head impunctate, the frontal elevations feebly raised, carina short and convex ; antennae fulvous, the third joint shorter than the fourth ( $ ) or equal ( c?); thorax with broadly flattened sides, the lateral margins nearly straight, obliquely narrowed anteriorly, the disc rather flat, impunctate, testaceous, the anterior angles in shape of a small tooth ; elytra evenly rounded and widened at the middle, broadly margined, scarcely perceptibly punctured, testaceous, the extreme basal margin, connected with an elongate spot which covers the shoulders, an oblique comma-like spot near the scutellum, a narrow transverse band (somewhat angulate near the lateral margin) at the middle, and another transverse spot near the apex, black ; below and the legs testaceous. Hab. Bolivia. Well distinguished by the shape and the position of the elytral spots. O e d io n y ch is in g r a t a , sp. n. Testaceous, the apical joints of the antennae piceous; thorax |