. Bulletin of entomological research. Entomology. EARLY STAGES OF WEST AFRICAN MOSQUITOS. 67 teeth arranged in a single row or in two short rows; the pecten of about nine (8 to 10) teeth ; and the hairs on the dorsal border of the anal segment a fan-like arrangement of about five hairs above and a long hair below on each Fig. 6. Pupa of Gulex quasigelidus, Theo, Pupa (fig. 6).—The pupa of C. quasigelidus has been described very briefly by Wesche (, p. 39), with figures of the respiratory trumpet and of the terminal segments of the abdomen. So long as this Culex pupa was unique i
. Bulletin of entomological research. Entomology. EARLY STAGES OF WEST AFRICAN MOSQUITOS. 67 teeth arranged in a single row or in two short rows; the pecten of about nine (8 to 10) teeth ; and the hairs on the dorsal border of the anal segment a fan-like arrangement of about five hairs above and a long hair below on each Fig. 6. Pupa of Gulex quasigelidus, Theo, Pupa (fig. 6).—The pupa of C. quasigelidus has been described very briefly by Wesche (, p. 39), with figures of the respiratory trumpet and of the terminal segments of the abdomen. So long as this Culex pupa was unique in having a ' distinct dark cloud " on the paddle Wesche's description sufficed for identification, but as the pupa of 0. ager var. ethiopicus (see p. 66) has also an area of infuscation on the paddle it is now necessary to amplify the earlier description. The pupa is of medium size, measuring about 5 mm. when extended, and is well chitinised. The paddles, which are about *8 mm. long, are broad, the ratio of length to greatest breadth being about 11 to 1; they are supported by a well developed midrib and an external buttress. Near the end of the midrib are two small hairs, the one larger than the other; the larger hair, which measures only about one-twelfth the length of the paddle, is sometimes divided towards its tip. There is a patch of infuscation at the distal end of the paddle which involves both the inner and outer lobes but does not extend far down towards the insertion of the paddle. There is no fringe on the paddles. At the posterior angle of the 8th abdominal segment is a tuft of 8 or 9 subplumose hairs, which are also branched. This tuft is about one-quarter the length of the paddle. Near the posterior angle of the 7th segment is a tuft of 4 or 5 subplumose hairs, which are also branched. This tuft is almost as long as the one on the 8th segment, measuring about one-quarter the length of the paddle. Near the posterior angles of each of the anterior segments, t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectentomology, bookyear1
