एक कीट के थोरैक्स का पूर्वकाल हिस्सा; पैर की पहली जोड़ी भालू

prothorax's Usage Examples:

mandibles being well adapted for the capture of small insect-victims. The larvae are more specialized than those of other Adephaga, the head and prothorax being very large and broad, the succeeding segments slender and incompletely chitinized.

The well-known "fire-flies" of the tropics are large click-beetles (Elateridae), that emit light from paired spots on the prothorax and from the base of the ventral abdominal region.

Or ridged areas on the sides of the prothorax may be scraped by "files" on the front thighs, as in some ground-beetles.

The file may be on the head - either upper or lower surface - and the scraper formed by the front edge of the prothorax, as in various wood-boring beetles (Anobium and Scolytus).

For example, the grub of a pea or bean beetle (Bruchus) is hatched, from the egg laid by its mother on the carpel of a leguminous flower, with three pairs of legs and spiny processes on the prothorax.

The tergite of the prothorax (pronotum) is prominent in all beetles, reaching back to the bases of the elytra and forming a substantial shield for the front part of the body.

The prothorax is large and "free," i.e.

The abdomen is oval, sandy-grey in hue and beset with warts and bristles; the prothorax forms a mobile neck for the large square head, which carries a pair of long and powerful toothed mandibles.

Turning to the thorax we find that the first segment (prothorax) is distinct and free, with a wide dorsal sclerite.

The mouth, with its jaws, forms a conical outgrowth which projects backwards, so that its apex lies beneath the prothorax.

prothorax's Meaning':

the anterior part of an insect's thorax; bears the first pair of legs