Entomological News (Volume 5)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ...after the water freezes; but such must perish, as they could never withstand the rush of the spring floods even if they survived the winter in the ice. The adults do not seem to live long. Those bred in October lived but a few weeks and I doubt whether they normally hibernate. I have described the eggs and mature larvae (Jour. N.Y. Ent. Soc., x, 195, 1902). In the first stage the head is round, flattened, evenly rounded, narrowed before the antennae, blackish infuscated, eyes elliptical, black, antennae moderate, uniform, infuscated, a single hair a little before the middle, terminal hair and spines normal; labial plate small with pronounced central tooth, side teeth minute; brushes normal. Thorax enlarged, flattened; body submoniliform, tapering posteriorlynormal; thoracic hairs longer than the width of thorax, delicate, moderate; abdominal hairs distinct on five segments but weaker and fewer posteriorly, twice as long as the width of a segment, very weak 011 the sixth segment, invisible on the seventh and eighth. Lateral comb of the eighth segment a single row of stout spines. Tube colorless, With a small terminal, infuscated ring. Anal segment dorsally plated, plate infuscated, a stout dorsal tuft, no ventral brush. Anal processes four, about as long as the segment, conical, with numerous tracheae. In the second stage the head is darkly blackish, the body pale. Hairs stronger, diminishing posteriorly. Air tube short, about twice as lo11g as wide, slightly constricted conical, infuscated, with a double pecten behind that runs nearly to the tip. Anal segment with a small dark dorsal plate, ventral brush present, small, with a few small hairs before the barred area. Comb of the eighth segment a single row of stout, short spines. Antennal...