. A manual for the study of insects. Insects. HEMIPTERA. 153 of the skin is made. The adult insects wander about on herbage and trees. They have the power of leaping well. The name frog-hoppers has doubtless grown out of the fact that formerly the froth was called ^* frog-spittle/' and w^as supposed to have been voided by tree-frogs from their mouths. The name is not, however, inappropriate, for the broad and depressed form of our more common species is something like that of a frog. In this family the antennae are inserted in front of and between the eyes ; the prothorax is not prolonged back
. A manual for the study of insects. Insects. HEMIPTERA. 153 of the skin is made. The adult insects wander about on herbage and trees. They have the power of leaping well. The name frog-hoppers has doubtless grown out of the fact that formerly the froth was called ^* frog-spittle/' and w^as supposed to have been voided by tree-frogs from their mouths. The name is not, however, inappropriate, for the broad and depressed form of our more common species is something like that of a frog. In this family the antennae are inserted in front of and between the eyes ; the prothorax is not prolonged back of the abdomen (as in the Membracidae); and the tibiae are armed with one or two stout teeth, and the tip crowned with short, stout spines, as shown in Ficfure 187. This fissure represents the most com- r 1 -r> TT • 1 O Fig. 187.—^//^- mon spittle insect of the Eastern United btates, ropkoraquad- . rangularis. Aphrophora quadrangular is (A-phroph o-ra quad- ran-gu-la'ris), and one of its tibiae greatly enlarged. Family Jassid^e (Jas'si-dae). The Leaf-hoppers. The most abundant members of the Homoptera, except perhaps the Aphids, are the leaf-hoppers. Large numbers of them can be easily collected by sweeping grass, herbage, or the fohage of shrubs. The leaf-hoppers are more slender than the spittle insects, and are also distinguished by the form of the hind tibiae, which are nearly or quite as long as the abdomen, curved, and armed with a row of spines on each margin (Fig. 188). fIg. x% Among the leaf-hoppers that have attracted attention on account of their injuries to vegeta- tion are the following: The destructive Leaf-hopper, Cicadiila exitiosa (Ci-cad'u-la ex-it-i-o'sa), which is represented greatly enlarged by Figure 189, sometimes infests winter wheat to a serious extent in the Southern States. The Grape-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
