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n. pl. pro·tho·rax·es or pro·tho·ra·ces (-thôr′ə-sēz′)
The anterior division of the thorax of an insect, bearing the first pair of legs.

pro′tho·rac′ic (-thə-răs′ĭk) adj.


(Zoology) relating to an insect's prothorax
References in periodicals archive ?
Tuta absoluta caterpillars were identified in the field according to 3 criteria: characteristic leaf mines, body form and size as described in USDA (2011), and a distinctive dark prothoracic band as described in Roditakis et al.
The potential effects of male exposure in the response of the L3 prothoracic auditory interneuron are unknown.
Pronotal lateral lobe polished dark brown to black; light ventro-posterior patch widest at posterior pronotal margin, extends tapering forwards to prothoracic episternum.
Length of prothoracic spiracle: short (until 0.17mm) (0) (Figure 33); medium (from 0.21-0.22mm) (1) (Figure 34); long (more than 0.29mm) (2) (Figure 35)
(1923) The function of the prothoracic plate in mylabrid (Bruchidae) larvae (A study in adaptation).
Additional evidence for the masking role and decreased capacity in aged cells of Sia were obtained from insect tissue, prothoracic glands, in Galleria mellonella (Lepidoptera).
Ignesti et al., "Drosophila 4EHP is essential for the larval-pupal transition and required in the prothoracic gland for ecdysone biosynthesis," Developmental Biology, vol.
In addition, ecdysteroids themselves play a role in their ownbiosynthesis via a feedback regulation of the PTTHaxis in the insect brain, and via direct action on the ecdysteroid-producing (prothoracic glands and/or endocrine organs like ovaries) (Belles and Piulack, 2015).