Publisher's Synopsis
Excerpt from On the Importance of Larval Characters in the Classification of Mosquitoes
On each side of the head, arising from prominences in front of the eyes, are the antennae. These vary very considerably in different genera, and have already been shown by us to have great significance in the classification of the anophelina. Each antenna consists of a basal segment immoveably fixed and more or less blended with the head mass, and a loosely jointed distal segment carrying various Spines, hairs, etc., - the antenna proper. When fully developed, three distinct portions, which, however, form a single unjointed piece, may be distinguished in the distal segment, a proximal, a median, and a shorter distal portion, which I have called the first, second, and thira' portion respectively. At the junctionof the first and second portions a large series of long stout hairs arises which I have termed the basal tuft. At the junction of the second and third portions there are generally two large and very stout hairs or spines. I have, for descriptive purposes, termed these the median spines. From the end of the third portion, one or more spines project. I have called these terminal spines. There is also, at the extreme end of the antenna, a papilla, which may be large and conspicuous, possibly a sense organ. I have named it the terminal papilla (pl. II, fig.
The antennae are often very small and poorly developed. In the case of some species (stegomyia) this appears due to retrograde changes, since most of the above-mentioned structures are represented only by small hairs or spines.
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