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The segment which forms the posterior part of the thorax of a hymenopterous insect. [Written also propodeum.]

A stage intermediate between the larva and pupa of bees and certain other hymenopterous insects.

A group of parasitic Hymenoptera, including the ichneumon flies, which destroy the larvæ and pupæ of insects.

Any one of numerous species of hymenopterous insects belonging to the family Tenthredinidæ. The female usually has an ovipositor containing a pair of sawlike organs with which she makes incisions in the leaves or stems of plants in which to lay the eggs. The larvæ resemble those of Lepidoptera.

A division of Hymenoptera comprising the sawflies.

Not associated with others of the same kind. Solitary ant (Zoöl.), any solitary hymenopterous insect of the family Mutillidæ. The female of these insects is destitute of wings and has a powerful sting. The male is winged and resembles a wasp. Called also spider ant. -- Solitary bee (Zoöl.), any species of bee which do…

The narrow basal portion of the abdomen of a hymenopterous insect.

A small appendage situated above the base of the wings of Hymenoptera and attached to the mesonotum.

The boring ovipositor of a hymenopterous insect.

Boring, or adapted for boring; -- said of certain Hymenoptera, as the sawflies.

A division of Hymenoptera including those which have an ovipositor adapted for perforating plants. It includes the sawflies.

A genus of large hymenopterous insects allied to the sawflies. The female lays her eggs in holes which she bores in the trunks of trees with her large and long ovipositor, and the larva bores in the wood. See Illust. of Horntail.

A division of boring Hymenoptera, including Tremex and allied genera. See Illust. of Horntail.

A genus of Hymenoptera including the common wasps and hornets.

Spenser. Virginal generation (Biol.), parthenogenesis. -- Virginal membrane (Anat.), the hymen.

Any one of numerous species of stinging hymenopterous insects, esp. any of the numerous species of the genus Vespa, which includes the true, or social, wasps, some of which are called yellow jackets.

-tree borer (see under Peach), and of the goat moths. (c) The larva of various species of hymenopterous of the tribe Urocerata. See Tremex. (d) Any one of several bivalve shells which bore in wood, as the teredos, and species of Xylophaga. (e) Any one of several species of small Crustacea, as the Limnoria, and the bori…

A genus of hymenopterous insects including the carpenter. See Carpenter bee, under Carpenter. -- Xy*loc"o*pine, a.