postpetiole n. [L. post, after; petiolus, little leg] (ARTHRO: Insecta) 1. In Formicidae, the second segment of a two-segmented pedicel. 2. In Ichneumonidae, where the petiole (first body segment) abruptly broadens near the spiracles.
postphragma n. [L. post, after; Gr. phragma, fence] (ARTHRO: Insecta) 1. Internal plates developed from the antecostal ridges at the front and back of the mesothorax and the back of the metathorax that provide attachment for the large longitudinal muscles moving the wings. 2. In Diptera, a well developed phragma at the posterior extension of the postnotum.
postpudendum n.; pl. -da [L. post, after; pudenda, external genitals of female] (nemata) The female genital tube that proceed posteriorly from the vulva.
post-pygidial gland (ARTHRO: Insecta) In Formicidae, a gland associated with the membrane between abdominal terga 7 and 8, sometimes large; function unknown. see pygidial glands.
postreduction n. [L. post, after; reducere, to lead back] Reduction of the chromosome number to haploid in the second meiotic division.
postscutellum n. [L. post, after; dim. scutum, a shield] (ARTHRO: Insecta) 1. A small transverse piece of a thoracic notum immediately behind the scutellum or between the apex of the scutellum and the base of the propodeum; pseudonotum. 2. In Diptera, a convex, transverse swelling below the scutellum; subscutellum.
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