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large American moth (Telea polyphemus) belonging to the Silkworm family (Bombycidæ). Its larva, which is very large, bright green, with silvery tubercles, and with oblique white stripes on the sides, feeds on the oak, chestnut, willow, cherry, apple, and other trees. It produces a large amount of strong silk. Called a…

A beetle (Doryphora decemlineata) which feeds, both in the larval and adult stages, upon the leaves of the potato, often doing great damage. Called also Colorado potato beetle, and Doryphora. See Colorado beetle. (b) The Lema trilineata, a smaller and more slender striped beetle which feeds upon the potato plant, bur d…

A large American bombycid moth (Callosamia promethea). Its larva feeds on the sassafras, wild cherry, and other trees, and suspends its cocoon from a branch by a silken band.

moth (Zoöl.), any moth of the family Notodontidæ; a notodontian; -- so called because the larva has a hump or prominence on its back. Several of the species are injurious to fruit trees.

An early larval form of a trematode worm; a redia. See Redia.

s so as to cause them to fall, especially the American oak pruner (Asemum moestum), whose larva eats the pith of oak branches, and when mature gnaws a circular furrow on the inside nearly to the bark. When the branches fall each contains a pupa.

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

shell. Coarctate, or Obtected, pupa, a pupa which is incased in the dried-up skin of the larva, as in many Diptera. -- Masked pupa, a pupa whose limbs are bound down and partly concealed by a chitinous covering, as in Lepidoptera.

Bearing, or containing, a pupa; -- said of the matured larvæ, or larval skins, of certain Diptera.

- Quince curculio (Zoöl.), a small gray and yellow curculio (Conotrachelus cratægi) whose larva lives in quinces. -- Quince tree (Bot.), the small tree (Cydonia vulgaris) which produces the quince.

Having a long, tapering tail like that of a rat. Rat-tailed larva (Zoöl.), the larva of a fly of the genus Eristalis. See Eristalis. -- Rat-tailed serpent (Zoöl.), the fer-de-lance. -- Rat-tailed shrew (Zoöl.), the musk shrew.

A kind of larva, or nurse, which is prroduced within the sporocyst of certain trematodes by asexual generation. It in turn produces, in the same way, either another generation of rediæ, or else cercariæ within its own body. Called also proscolex, and nurse. See Illustration in Appendix.

ANy insect whose larva rolls up leaves; a leaf roller. see Tortrix.

The larva of any one of several species of lepidopterous insects which feed upon the leaves, buds, or blossoms of the rose, especially Cacæcia rosaceana, which rolls up the leaves for a nest, and devours both the leaves and buds.

the abdomen bright red, and the other parts deep bluish green with a metallic luster. The larva is parasitic in the nests of other wasps and of bees.

The larva of a bombycid moth (Empretia stimulea) which has a large, bright green, saddle-shaped patch of color on the back.

The embryo produced directly from the egg in a metagenetic series, especially the larva of a tapeworm or other parasitic worm. See Illust. of Echinococcus.

rew valve, a stop valve which is opened or closed by a screw. -- Screw worm (Zoöl.), the larva of an American fly (Compsomyia macellaria), allied to the blowflies, which sometimes deposits its eggs in the nostrils, or about wounds, in man and other animals, with fatal results. -- Screw wrench. (a) A wrench for turnin…

The young attached larva of Discophora in the stage when it resembles a hydroid, or actinian.

The young of an insect in a stage between the larva and pupa.