OCR Text |
Show 174 MR.-MARTIN JACOBY ON NEW SPECIES [Mar. 4, Head impunctate, the frontal elevations small, the carina acutely raised ; antennae extending to the middle of the elytra, black, the lower three joints flavous, second and third joints equal, fourth scarcely longer, the terminal joints gradually thickened ; thorax quite one-half broader than long, the sides nearly straight, the anterior angles obliquely thickened, the basal sulcus deep, not extending beyond the perpendicular grooves at the sides, the disc convex, remotely and finely punctured, elytra with the base distinctly raised, punctured in regular and not closely placed rows, distinct to the apex, the last row near the lateral margins more strongly punctured, the last interstice slightly convex; below and the legs nearly black; prosternum broadly elongate, distinctly punctured. Hab. Colombia. One of the smallest species of the genus, and distinguished from its Colombian congeners by the finely but distinctly punctured thorax. Genus LACTICA. a. Elytra blue or green. LACTICA BOLIVIANA, sp. n. Ferruginous, the antennae (the basal three joints excepted), the apex of the tibiae, the tarsi, and the abdomen black ; elytra violaceous blue, strongly punctured ; thorax impunctate, the basal sulcus deep; posterior legs entirely black. Length 5 millim. Head impunctate, obliquely grooved above the antennae, carina short, labium piceous ; eyes very slightly emarginate; antennae scarcely extending to the middle of the elytra, black, the lower three joints fulvous, third and fourth joints equal, the second one scarcely shorter ; thorax twice as broad as long, rather convex, not narrowed anteriorly, the sides straight, the anterior angles oblique, the basal sulcus deep and straight, placed close to the base, the surface impunctate ; scutellum fulvous ; elytra convex, violaceous blue, distinctly punctured in closely approached iiregular rows, distinct to the apex; legs and the breast ferruginous, the apex of the four front tibiae, the tarsi, the posterior legs entirely, and the abdomen black. Hab. Bolivia. Closely allied in coloration to L. elegantula Har., but much larger, without distinct frontal elevations, the third and fourth joints of the antennae equal; the head impunctate, and the elytral punctuation distinct to the apex. L. abdominalis Jac. is much smaller and has fulvous posterior legs. LACTICA LOBATA, sp. n. Oblong-ovate, ferruginous, apical joints of the antennae black; thorax impunctate, the basal sulcus rather deep, basal margin |