. A manual for the study of insects. Insects. 444 THE STUDY OF INSECTS, four to SIX deep. The larvae crawl over each other so that the column advances about an inch a minute. Family Cecidomyiid^ (Cec-i-do-my-i'i-dae). The Gall-gnats, The gall-gnats are minute flies which are extremely delicate in structure. The body and wings are clothed with long hairs, which are easily rubbed off. The antennae are long, sometimes very long, and usually with a whorl of hairs on each seg- ment (Fig. 521); the legs are slender and quite long, but the coxae are not greatly elongate, and the tibiae are without sp
. A manual for the study of insects. Insects. 444 THE STUDY OF INSECTS, four to SIX deep. The larvae crawl over each other so that the column advances about an inch a minute. Family Cecidomyiid^ (Cec-i-do-my-i'i-dae). The Gall-gnats, The gall-gnats are minute flies which are extremely delicate in structure. The body and wings are clothed with long hairs, which are easily rubbed off. The antennae are long, sometimes very long, and usually with a whorl of hairs on each seg- ment (Fig. 521); the legs are slender and quite long, but the coxae are not greatly elongate, and the tibiae are without spurs; the wing-veins (Fig. 522) are greatly reduced in number; the anal veins being entirely wanting, and vein V wanting or merely Ftg. 521. —Antenna represented by a slight, unbranched fold, male; f. female; To this family belong the smallest of enlarged more than -ii'in* /->. ri* that of the male. the midge-like flies. On account of their minute size, the adult flies are not apt to attract the at- tention of the young student. But the larvae of many. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.
Size: 1213px × 2060px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
