oa Journal of the Entomological Society of Southern Africa - Taxonomy of the species with notes on distribution, bionomics, and relation to disease
Determination. This important yellow fever vector is not likely to be confused with any other species. The scutal ornamentation of both sexes is quite characteristic (plate 5) consisting of a pair of narrow crescent shaped sub-lateral white marks on the front half of the scutum, from behind each of which runs a narrow white line to the posterior edge. In the middle of the scutum there is a pair of white lines running from the anterior white patch to about two thirds; there is then a short median white line and white scales bordering the front sides of the prescutellar bare space. Other features not found in any stegomyias of southern Africa are that the middle femora have white stripes in front, from base to near tip, and the clypeus of the female has two patches of white scales (above).
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