OCR Text |
Show 370 APPENDIX C.- INSECTS. point above. W spot near the apex wanting. Beneath, yellow; end of the hanstellom a few points near the joints of the feet, and a transverse line at the base of the abdomen, black. Medial and posterior femora with an impressed stria along the inferior surface. Entire length thirteen, of the body nine and a- half, expanse of the wings twenty- three lines. This small species seems to be allied to ( 7. rimoea of'Say. It belongs to the section of C. septemdecim, in which the drums are exposed so as to render their action visible in the living insect. ZAITHA RETICULATA, Hald. Dark brown, haustellum stout, and curved, scutel longitudinally rugose, elytra with distinct raised reticulations; wings white, abdomen black, apex beneath paler, pectus varied with yellowish, and the external margin of the posterior femora of the same colour. Length eight and a- half, breadth four'and a- half lines. This species is allied to Z. tettacea and Z. aurantiaca of Leidy, ( who described them under the generic name of Perthostoma,) in the Journal of Acad. Nat. Sci. of Philadelphia, 1847, p. 60; but the colour is deeper, and it is at once distinguished by the raised reticulations upon the elytra. ZAITHA BIFOVEATA, Hald. PL. X. Pro. 1. Brownish- yellow, scutel and beneath darker; head much advanced in front, haustellum very long, and curved nearly in a quadrant; antennae hairy, the three terminal articulations parallel, curved, and of equal length, the apical one thickest, but scarcely differing in shape. Pronotum punctate, the anterior two- thirds finely, and the posterior third more coarsely and confluently; a fovea without punctures upon each side, about a line from the anterior or lateral margins; scutel punctate, with the disk longitudinally rugose. Feet maculate with brown; margin of the venter maculate with flavous. Length sixteen, breadth seven, head nearly three, haustellum three and a- half lines. Fort Gates, Texas. This is the largest species of the genus, but it has the characters of the antennae and rostrum,, the long anterior coxae, slender feet, and terminal nervures of the elytra without anastomoses, which distinguish this genus from Belostoma. In Belostoma, the wing when folded has four nervures ( omitting that of the fold) which reach the margin; in Zaitha there are but |