OCR Text |
Show 606 MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA. [NOV. 16 testaceous hand below the latter ; and the posterior half of the black. Entire underside and the femora rufous ; tibiae and tarsi black. 82. DIABROTICA ATRIVENTRIS, sp. nov. Oblong-ovate, widened behind. Flavous, shining ; antennse (the first joint excepted), tibiae and tarsi, abdomen, and the posterior half of the elytra black. Length 3 lines. Head much longer than broad, longitudinally grooved in the middle, impunctate. Antennse two thirds the length of the body, the second joint half the length of the third, black ; basal joint fulvous. Thorax transversely subquadrate, widened at the middle, surface impressed with a deep transverse sinuate groove not extending to the sides; disk minutely punctured. Elytra closely and finely but much more distinctly punctured than the thorax ; the anterior half fulvous, the rest black; breast and the femora fulvous; abdomen, tibiae, and tarsi black. The small size and the differences in colour will distinguish this species from others nearly* similarly coloured. Genus CEROTOMA, Chevrol. 83. C E R O T O M A TRIFASCIATA, sp. nov. Black ; head, legs, and thorax fulvous, the latter deeply sulcate, with two piceous spots; elytra costate, the intervals geminate-punctate, flavous ; a transverse band at the base, another at the middle, and a third one near the apex bluish black. Length 4 lines. 2 • Head and epistome deeply rugose punctate; labrum testa-taceous, with a piceous mark; antennse light testaceous, the basal joint flavous. Thorax with a deep sinuate fovea in the middle of the disk in shape of a W , and having a piceous spot at each end; surface with a few obsolete punctures near the anterior margin ; scutellum fulvous. Elytra widened behind, each elytron with seven or eight longitudinal costse, which do not quite extend to the apex ; the interstices deeply geminate-punctate ; flavous, with three transverse bluish-black bands, of which the last is the broadest and extends to the lateral margin, the others not quite reaching it; underside black, the abdominal segments margined with fulvous, legs entirely of that colour. This species is not unlike C. deyrollei, Baly, but is much larger, and differs in the colour of the underside and in the two spots of the thorax. Mus. Godman and Salvin. Genus COSLOMERA, Chevrol 84. CCELOMERA BUCKLEYI, Sp. nOV. Elongate, parallel ( 3 ), or dilated posteriorly ( § ). Flavous ; head, antennse, breast, tibiae and tarsi, and last joint of the abdomen |