. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . To the family C2dicid(Z belong the mosquitoes, characterized by a slender body, long legs, long antennae, and a small head with mouth parts usually ex- tended to form a beak or pro- boscis. In the male the probos- cis contains a single lancet only, not fitted for puncturing animal tissues, and the antennae are plu- mose ; in the female a series of five slender, bristle-like lancets forms an effective piercing struct- ure, and the antennae have the joints furnished with
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . To the family C2dicid(Z belong the mosquitoes, characterized by a slender body, long legs, long antennae, and a small head with mouth parts usually ex- tended to form a beak or pro- boscis. In the male the probos- cis contains a single lancet only, not fitted for puncturing animal tissues, and the antennae are plu- mose ; in the female a series of five slender, bristle-like lancets forms an effective piercing struct- ure, and the antennae have the joints furnished with a few bristles only. The wings are slender and scaly along the veins. The species are quite numerous, and while most of them are pests of the first order, a few seem to feed on other than animal juices. The more common species be- long to the genus Cidex, in which the wings are unspotted, the palpi of the female are shorter than the beak, and the body is held parallel with the surface upon which the insects rest. The species of Anopheles are fewer in number, but are of relatively greater economic importance, because they have been proved to be intermediate hosts for the parasites causing '' malarial'' fevers. They are larger, as a rule, than Culex, the wings are more or less spotted, the palpi in both sexes are as long as the beak, the body is more linear and is held at an angle to the surface upon which it rests, the beak directed to a point almost midway between the fore and middle legs. Some of the species of Culex fly or allow themselves to be carried by the wind for long distances, so that they occasionally appear as pests many miles from any possible breeding-place. The mode of hibernation varies : in Anopheles and some Culex the female adult survives ; in other species of C^dex the eggs lie over in suitable localities, and in one instance at least the partly- grown larva lives through the winter. Lan'a and pupa of the Culex pungens, enlarged ; with anal flaps of pupa yet
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
