OCR Text |
Show 1880.] MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA. 605 to the middle, and is very regularly divided by the posterior black part; each elytron has also two black spots at "the base-one at the shoulder, the other near the scutellum. Underside (with the exception of that of the thorax) and the tibiae and tarsi black, closely covered with yellow pubescence; coxse and the femora fulvous. To be distinguished from D. divisa, Baly, and its allies, by the colour of the underside and the black spots of the elytra. Mus. Godman and Salvin. 80. DIABROTICA QUADRIMACULATA, sp. nov. Elongate. Black; antennse (the three apical joints excepted), thorax, femora, coxse, and two transverse bands on each elytron (one below the middle, the other near the apex), as well as two small spots below the base, flavous. Length 4 | lines. Head very finely granulate and punctate, the frontal tubercles distinct and divided by a deep groove ; lower part of face either flavous or black, like the rest of the head. Antennae as long as half the body; the second joint half the length of the third, rest of the joints slender and filiform, pubescent; three apical ones flavous, the extreme apex black. Thorax a little broader than long, with the angles slightly produced ; surface rather convex, flavous, minutely punctured and extremely finely granulate, without impressions. Scutellum black. Elytra finely but more distinctly punctured than the thorax, also very finely granulate, black ; each elytron with a very small spot below the shoulder, another below the base near tbe suture, a broad transverse band below the middle, not extending to the sutural margin, and a narrow transverse band near the apex light flavous. Underside, tibiae, and tarsi black ; coxse, femora (the latter streaked with black above), and the margins of the abdominal segments flavous, all covered with rather long yellow hairs. From D. generosa, Baly, this species may be distinguished by the want of the foveae at the thorax, the greater size, and the colour and length of the antennse. Mus. Jacoby. 81. DIABROTICA BASALIS, sp. nov. Oblong-ovate, widened behind. Rufous ; antennse, tibiae, and tarsi black; thorax transversely depressed; elytra finely punctate, a transverse band at the base rufous, another at the middle flavous, the rest black. Length 3 lines. Head longer than broad, front impressed with a distinct fovea- Antennse two thirds the length of the body, filiform, third joint double as long as the second, black. Thorax broader than long, narrowed at the base ; anterior angles produced into a short obtuse tooth; disk with a deep sinuate transverse groove not extending to the sides ; surface impunctate, rufous ; scutellum of the same colour. Elytra distinctly widened posteriorly, convex, closely but finely punctured ; a narrow, transverse, rufous band at the base ; another |