Anopheles Larvae from Palestine and Elsewhere

Abstract

The fourth stage larvae of A. superpictus, sergenti, funestus and aconitus are discussed. A. superpictus may be at once separated from the others by the absence of float-hairs, or rudiments of float-hairs, from the metathorax and first abdominal segment; also by the small extent of the dark markings on the head, and the narrowness of the dorsal plates of the abdomen. A. sergenti differs from A.aconitus and funestus (of which Edwards has suggested that it might be regarded as a variety) principally in the abdominal plates. A. aconitus and A. funestus differ from one another in details connected with the inner anterior clypeal (i.a.) pre-antennal (pr.a.) and vertical (v.) hairs, and in the shape of the abdominal plates, but they are evidently closely related, if larval anatomy is any evidence of relationship.