pterergate n. [Gr. pteron, wing; ergates, worker] (ARTHRO: Insecta) In Hymenoptera, a worker or soldier ant with vestigial wings.
pteridine n. [Gr. pteron, wing; eidos, like] Tetrazanaphthaline derivatives, widespread in nature; important in natural pigmentation.
pterine (pteridine) pigments A group of nitrogen-containing compounds producing leucopterin (white), xanthopterin (yellow) the most widely distributed, isoxanthopterin (purple florescence) and biopterin (blue floresence); pigments important in the natural pigmentation of many invertebrates, as well as plants.
pternotorma n.; pl. -mae [Gr. pterna, heel; torma, socket] (ARTHRO: Insecta) In scarabaeoid larvae, a stoutly curved process at the end of the laeotorma and occasionally of the dexotorma.
pterocardiac a. [Gr. pteron, wing; kardia, heart] (ARTHRO: Crustacea) In Decapoda, a gastric mill ossicle in the form of a curved triangular plate articulating with the mesocardiac ossicle along the broad base, with the bent apex connected to the anterior process of the zygocardiac ossicle; in a few species these ossicles are slightly elongated and straight.
pterodinergate n. [Gr. pteron, wing; deinos, terrible; ergate, worker] (ARTHRO: Insecta) In Hymenoptera, a member of the soldier caste with vestigial wings.
pteropleural bristles (ARTHRO: Insecta) In Diptera, bristles on the pteropleuron.
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