. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 107 ing-also that copulation took place only with the insect's own kind and not with the associated species. The two species occurred in about equal numbers, their habits being the same. Leaf-hoppers (Tettiooniida^ and Jassidie).âVarious species of leaf- hoppers of the families Tettignoiidje and Jassida? were under observa- tion during the past three years on experimental plats of the Depart- ment of Agriculture on cowpea and beans. They occurred in all stages, feeding on the under surface of the leaves, but were
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 107 ing-also that copulation took place only with the insect's own kind and not with the associated species. The two species occurred in about equal numbers, their habits being the same. Leaf-hoppers (Tettiooniida^ and Jassidie).âVarious species of leaf- hoppers of the families Tettignoiidje and Jassida? were under observa- tion during the past three years on experimental plats of the Depart- ment of Agriculture on cowpea and beans. They occurred in all stages, feeding on the under surface of the leaves, but were not pres- ent in reall}- injurious numbers. The crafty leaf-hopper {Dledrocej^hala versuta Say) was the most conspicuous species, on account of its larger size and brighter colors, although numerically less than the smaller Empoascas, with which it. h ^ c ^ d Fig. 26.âDicdroccphala versuta: a, male with expanded wings; b, same witli wings folded; c. young nymph; d. last stage of nymphâall much enlarged (original). was sometimes associated. Adults were present from June to Sep- tember. This, like many other leaf-hoppers, probably lives largely on grasses, but cowpea is also greatly relished. Without doubt it agrees nither closely in habits with the better-known red-banded leaf- hopper {D!c(h'ocej)haIa coccbita Forst.), to which it is closelv related. The latter, according to Messrs. Osborn and Ball, is double-brooded (Bui. 34, Iowa Agr. Coll. Exp. Sta., p. G15, 1S9T). From the latter, â versuta differs chiefl}- in its smaller size and by having the vertex with the black markings nearly parallel with the anterior margin, which is usually black-lined. There is often a pair of approximate median lines on the disk. IJ. cocclnea is reddish, with green stripes on the pronotum and elytra, while in versuta yellowish or greenish predomi- nates, with occasionally reddish on the upper surface. A mature male. Please note that these images are extracted from scanned page images that may
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