Author Description

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919. Excerpt:... can be found in myriads by sweeping the rank herbage in May. The writer has never located the immature stages, but the species was reared by Dr. J. G. Needham at Ithaca, New York, on May 20, 1898. There is no record as to wheie these larvae occurred, but they are presumably mud-inhabiting forms, or possibly they frequent habitats similar to those described for the two preceding species. Pupa.--Length of cast skin, about 12 mm. Pronotal breathing horns (Plate XLI, 187) short, cylindrical, the tips scarcely enlarged. Mesonotum behind with a prominent rounded tubercle on either side of median line, which is set with two spines, a larger outer spine and a small inner spine. Wing sheaths ending opposite apex of second abdominal segment. Leg sheaths ending opposite apex of third abdominal segment, the tarsal sheaths terminating on a common level. Abdominal segments divided into two rings. Tergites with posterior ring having a transverse row of elongate tubercles, there being about eight on segment 2, about six on intermediate segments (3 to 5), and about four on segments 6 and 7; these tubercles fleshy, but sparsely armed with chitinized spines. Basal ring unarmed. Pleura with a strong tubercle on each ring; a blunt but prominent spiracle at extreme base of posterior ring; this spiracle very prominent on segment 2 (Plate XLI, 188), much exceeding lateral tubercles and being about two-fifths length of pronotal breathing horns. Sternites with about six tubercles on posterior ring. Male cauda (Plate XLI, 189) with tergal lobes slender, running out into acute chitinized points, which are directed caudad, slightly divergent; dorsum of segment 8 with posterior lobes powerful, about equal in size to, or a little larger than, tergal lobes of cauda just described; anter...