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Of or pertaining to wings; also, wing-shaped. The alary system of insects. Wollaston.

Any of numerous neuropterous insects of the genus Sialis or allied genera. They have aquatic larvæ, which are used for bait.

The segment of the body of an insect to which the wings are attached; the thorax. Kirby.

A compound cordial, in the form of a confection, deriving its name from the kermes insect, its principal ingredient.

A group of insects which do not undergo any metamorphosis. [Written also Ametabolia.]

Of or pertaining to insects that do undergo any metamorphosis.

Not undergoing any metamorphosis; as, ametabolic insects.

An earth abounding in pyrites, used by the ancients to kill insects, etc., on vines; -- applied by Brongniart to a carbonaceous alum schist.

A division of insects having aquatic larvæ.

Having the outer edge prominent; said of the wings of insects.

Without joints, or having the joints indistinct, as some insects.

they become themselves infected by previously biting a subject affected with malaria, the insects cannot transmit the disease.

A group of insects which includes the lice.

A hymenopterous insect of the Linnæan genus Formica, which is now made a family of several genera; an emmet; a pismire.

A neuropterous insect, the larva of which makes in the sand a pitfall to capture ants, etc. The common American species is Myrmeleon obsoletus, the European is M. formicarius.

A movable, articulated organ of sensation, attached to the heads of insects and Crustacea. There are two in the former, and usually four in the latter. They are used as organs of touch, and in some species of Crustacea the cavity of the ear is situated near the basal joint. In insects, they are popularly called horns,…

Eating flowers; -- said of certain insects.

The spiral tubular proboscis of lepidopterous insects. See Lepidoptera.

A group of wingless insects, of which the flea in the type. See Flea.

A genus of insects belonging to the order Hemiptera and family Aphidæ, including numerous species known as plant lice and green flies.