. Annual report, including a report of the insects of New Jersey, 1909. Order PLECOPTERA. The "Stone flies" which constitute this order are loose-jointed, flat- tened, soft-bodied creatures with long net-veined wings, the hind pair longitudinally folded beneath the anterior. The head is large, the mouth parts are soft, antennae long and tapering, eyes rather prominent. The prothorax is free and quadrate, the other segments loosely jointed. The abdomen is soft and usually with anal filaments or processes. These "flies" are found along the streams and rivers in which their la
. Annual report, including a report of the insects of New Jersey, 1909. Order PLECOPTERA. The "Stone flies" which constitute this order are loose-jointed, flat- tened, soft-bodied creatures with long net-veined wings, the hind pair longitudinally folded beneath the anterior. The head is large, the mouth parts are soft, antennae long and tapering, eyes rather prominent. The prothorax is free and quadrate, the other segments loosely jointed. The abdomen is soft and usually with anal filaments or processes. These "flies" are found along the streams and rivers in which their larvae occur, resting on the leaves and'not easily disturbed; their flight is heavy and they do no feeding upon living plants so far as known. The larvae live in streams under stones to v>^hich they cling so closely that, being very much flattened they are easily overlooked. They breathe bj^ means of lateral gill tufts which occur also on the head, and which, in some species, persist even in the adult stage; a curious reminder of ancient conditions and an indication of the primitive character of this order! The pupae are active and the transformation is incomplete. They form an important feature of the aquatic fauna in numbers of individuals as well as of species, but are of no economic importance. Since the previous edition quite a number of genera and species have been taken, practically all of which have been determined by Mr. 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 New Jersey state museum. [from old catalog].
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Keywords: ., bookcentury1900, bookcontributorthe, bookdecade1910, bookyear1910
