. Bulletin of entomological research. Entomology. 168 J. W. S. MACFJE. 2.—A series of setae, the postero-lateral setae (D), situated near the posterior margins of the segments a little internal to the posterior angles. 3.—A series of setae, the inner ventral setae (B), situated near the posterior margins of the segments at points about half-way between the middle line and the posterior angles. 4.—A series of setae, the outer ventral setae (C), situated near the posterior margins of the segments between the inner ventral setae and the postero-lateral setae. 5.—A series of minute setae, the ante
. Bulletin of entomological research. Entomology. 168 J. W. S. MACFJE. 2.—A series of setae, the postero-lateral setae (D), situated near the posterior margins of the segments a little internal to the posterior angles. 3.—A series of setae, the inner ventral setae (B), situated near the posterior margins of the segments at points about half-way between the middle line and the posterior angles. 4.—A series of setae, the outer ventral setae (C), situated near the posterior margins of the segments between the inner ventral setae and the postero-lateral setae. 5.—A series of minute setae, the anterior ventro-central setae (A), situated close to the anterior margins of the segments and very near the middle line of the abdomen. These setae, owing to their size and position, are often impossible to see. The ventral abdominal setae may now be described as they occur on each segment, making use of the abbreviations, E, D, C, B, and A, as defined above. Segment I. No Fig. 4. Abdomen of pupa of Stegomyia jasciaia, ventral view ; for explanation see text. Segment II. The only seta detected on this segment is a delicate single seta of moderate length situated in a position corresponding to B. This seta is inconstant; that is to say, in some pupae it was absent, and no socket could be found from which it might have been detached. Segment III. E— small, delicate ; usually double or triple, occasionally single. D— a short tuft of two to four hairs, sometimes branched. C— a delicate seta of moderate length ; single. B— a small, relatively stout, seta ; single. A— a minute seta. Segment IV. E— a small delicate seta ; usually double, sometimes single or triple. D— a small tuft of two or three hairs, sometimes a single seta. C— a long delicate seta ; single. B— a short, relatively stout seta ; single. A— a minute seta. Segment V. E— a small delicate seta ; usually double, sometimes single or triple. D— a small tuft of two to four hairs, or a sing
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