OCR Text |
Show 1880.] MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA. 607 black ; elytra finely rugose, punctate, and pubescent, metallic blue violaceous. Length 6-7 lines. Head convex, with a more or less distinct central groove, finely punctate. Third joint of the antennae very long, and much longer than the two preceding ones, rest of the joints closely covered with whitish pubescence. Thorax but moderately constricted near the base, rather obsoletely transversely grooved on the disk ; impunctate, shining flavous. Scutellum subquadrate, black, distinctly punctate. Elytra convex and parallel in the male, or slightly constricted at the middle, finely rugose, punctate, and covered with thin whitish hairs, dark blue or violaceous. The black abdominal last segment and the tibiae, as well as the black scutellum and the fine pubescence of the elytra, distinguish this species from C. violaceipennis, Clark. Except in the colour of the elytra, all the specimens before me resemble each other perfectly. 85. CCELOMERA RUFICOLLIS, Oliv. 86. COELOMERA CAJENNENSIS, Fabr. Genus MALACOSOMA, Chevrol. 87. M A L A C O S O M A O L I V A C E U M , Fabr. 88. MALACOSOMA OBSOLETUM, Fabr. Genus DIRCEMA, Clark. 89. D I R C E M A RUFIPENNIS, sp. nov. Fulvous below; head and antennse black, last five joints of the latter flavous; thorax transversely sulcate, rufous, shining ; elytra finely punctate and pubescent, rufous. Length 5 lines. Head swollen, longitudinally impressed between the antennse, finely punctured at the same place, black ; lower part of the epistome and margin of the labrum more or less testaceous ; palpi flavous ; antennse black, extreme base of the first and the last five joints flavous. Thorax narrowly transverse, the sides greatly widened and rounded near the apex; disk broadly transversely sulcate, very remotely but distinctly punctate, with a few yellowish hairs; rufous, very shining. Scutellum pubescent, rufous. Elytra parallel, convex, of a lighter rufous than the thorax, and less shining, closely punctured, and finely covered with yellow hairs. Entire underside and the legs pale fulvous. Easily distinguished from any other species of this genus by the rufous colour and glossy appearance of its upper surface. Genus MONOCESTA, Clark. 90. M O N O C E S T A DIMIDIATA, Jacoby, P. Z. S. 1877, p. 520. Also found in Peru. |