Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . Epidapus scabei.—Wingless female and slruelural details. but I have never found any trace of the insect in New Jersey,though I have examined many hundreds of scabby potatoes for 33^ A AT ECONOMIC ENTOMOLOGY. 1-iG. Eggs and larva of , much enlarged. that especial purpose. Fortunately, the measures used to preventthe scab due to the fungous disease seem to destroy the insects aswell; hence the method of distinguishingbetween the two is not important. In the
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . Epidapus scabei.—Wingless female and slruelural details. but I have never found any trace of the insect in New Jersey,though I have examined many hundreds of scabby potatoes for 33^ A AT ECONOMIC ENTOMOLOGY. 1-iG. Eggs and larva of , much enlarged. that especial purpose. Fortunately, the measures used to preventthe scab due to the fungous disease seem to destroy the insects aswell; hence the method of distinguishingbetween the two is not important. In the family Cecidomyidce, containingthe midges, or gall-gnats, we find themost injurious species of the order. Theyare also mosquito-like in appearance, butusually very small, with very long an-tennae, which in the males are clothed oneach joint with whorls of fine hair. Thelarvae are ovate, quite broad, and a littleflattened, the segments well marked, andthe apparent mouth parts formed inmany species by a peculiar horny pro-cess which is known as the breast-bone, from its situation. The speciesare numerous, and the larval habits andlife histories are very diverse. In mostcases growing vegetable tissue is thefood, and, as a rule, a more or less marked gall-like swellingindicates the location of the larva. The most widely known specie
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
