. Bulletin of entomological research. Entomology. 60 DRS. A. INGRAM AND J. W. S. MACFIE. At the posterior angle of the 8th abdominal segment is a stout seta giving off a number of branches; it is about one-quarter the length of the paddle, and its spread of branches is only moderate. At the posterior angles of the 7th, 6th and 5th segments are long spines, curved and sharply pointed; on the 4th and 3rd segments the corresponding spines are short and blunter; and on the 2nd segment very small and feebly chitinised. In addition to the spines already described there are numerous hairs on the body
. Bulletin of entomological research. Entomology. 60 DRS. A. INGRAM AND J. W. S. MACFIE. At the posterior angle of the 8th abdominal segment is a stout seta giving off a number of branches; it is about one-quarter the length of the paddle, and its spread of branches is only moderate. At the posterior angles of the 7th, 6th and 5th segments are long spines, curved and sharply pointed; on the 4th and 3rd segments the corresponding spines are short and blunter; and on the 2nd segment very small and feebly chitinised. In addition to the spines already described there are numerous hairs on the body of the pupa, the most important being those on the dorsal aspect at the posterior margins of the 3rd to the 7th segments which are arranged in two rows on each side of the abdomen. The hairs of the one row, the outer lateral row, are situated a little internal to the angle ; they are branched. The hairs of the other row, the inner lateral row, are situated about mid-way between the posterior angle and the middle line ; they are long single hairs on the 7th, 6th and 5th segments, and branched hairs similar to those in the outer lateral row on the 4th and 3rd segments. The dendritic hairs on the 1st segment are well Fig. 1 Pupa of Anopheles pretoriensis, Theo. The respiratory trumpets are about '4 mm. long ; they are, as usual, composed of two parts, a closed part or meatus which is proximal, and an open part or pinna which is distal. In the pupa of A. pretoriensis the meatus is short; the ratio of its length to the total length of the trumpet being about 1 to 3. The pinna as it expands forms a slight angle a little beyond the distal margin of the meatus; this angle is much less acute than that shown by A. costalis. Diagnosis.—The pupa of A. pretoriensis has to be separated from the other known pupae of this genus which have long, sharp and usually curved spines at the posterior angles of the 7th, 6th and 5th segments, that is, from those of A. costalis, A. funestu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectentomology, bookyear1