from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The anterior division of the thorax of an insect, bearing the first pair of legs.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The anterior part of the insect thorax; it carries the first pair of legs
from the GNU version of the Collaborative International Dictionary of English
- n. The first or anterior segment of the thorax in insects. See Illusts. of butterfly and coleoptera.
from The Century Dictionary and Cyclopedia
- n. In Insecta, the first one of the three thoracic somites, which succeeds the head, is succeeded by the mesothorax, and bears the first pair of legs.
- n. See the adjectives.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the anterior part of an insect's thorax; bears the first pair of legs
Sorry, no etymologies found.
Many of the names which he proposed are still in use; it was he who introduced the terms prothorax, mesothorax, and metathorax, for the three segments of the insect's thorax.
The head, if rather narrow, is distinct, and beneath the prothorax is a characteristic sclerite known as the 'anchor process' or
This very singular genus differs from all the Stridulantes in the size and shape of the prothorax; in the neuration of the elytra it is allied to PLATYPLEURA (Amyst and Serville) in the size of head and hairiness of body it approaches CARINETA of the same authors.
Of a brownish ash colour, the hairs on upper part of body short and deep brown, on the sides and under parts long and grey; prothorax varied with black, in front, two large patches covered with grey hairs, mixed with longer; elytra spotted and varied with brown, wings clear, somewhat ferruginous at the base.
Description size: 2 - 3 mm shape: slim, cylindrical colour: red-brown to black-brown recognition: head concealed beneath prothorax
S. granarius (Granary weevil): without spots on elytra, punctures on prothorax oval-shaped.
Description size: 1.5 - 2.5 mm shape: tiny, flat and slender, elongate colour: reddish brown recognition: head and prothorax account for half of the body length: prothorax bearing two longitudinal ridges; antennae without club and half the length up to the length of the body
Description size: 2.5 - 3.5 mm shape: more or less cylindrical colour: black-brown with four reddish spots on the elytra recognition: well defined snout: elbowed and clubbed antennae; circular punctures on the prothorax; can fly
Description size: 2.5 - 3.5 mm shape: slender colour: dark brown recognition: six toothlike projections along each side of the prothorax
Its entire prothorax burst through the cocoon as if someone had created it instantaneously.