pupil n. [L. pupilla, pupil of eye] (ARTHRO: Insecta) The central spot of an ocellus.
pupillarium n. [L. dim. pupa, puppet] (ARTHRO: Insecta) In Diaspididae, the adult female shrinks inside the exuviae of the second larval stage and lives and lays eggs inside. pupillarial a.
pupillate a. [L. pupilla, pupil of eye] Having an eye-like center; a spot or mark.
pupipara n. [L. pupa, puppet; parere, to beget] (ARTHRO: Insecta) In Diptera, a convenience group in which wings are reduced, direct reproduction of puparia, with development taking place within the mother. see nymphipara.
pupiparous a. [L. pupa, puppet; parere, to beget] (ARTHRO: Insecta) Bearing larva that are full grown and ready to pupate.
pupoid a. [L. pupa, puppet; Gr. eidos, form] 1. Pupiform. 2. (ARTHRO: Diplopoda) The final embryo at hatching, without legs or segmentation visible.
pure line population Descendants through self-fertilization of a single homozygous parent or highly inbred line of animals obtained by long continued inbreeding.
purine bases Nitrogen-containing organic cyclic bases that pair with pyrimidine bases in DNA and RNA replication.
purpuraceous a. [L. purpura, purple] Being purple in color.
pustula, pustule n.; pl. -lae [L. pustula, blister] 1. An elevation resembling a pimple, blister or wartlike projection;
smaller than a tubercle. 2. (BRYO) A small regular skeletal structure of crinkled laminae.
putative a. [L. putare, to think] Commonly regarded as such; reputed to be; supposed.
pycnosis n. [Gr. pyknos, dense] Degeneration of a cell nucleus characterized by condensation and an increased affinity for stain. pycnotic a.
pygal a. [Gr. pyge, rump] Situated back, or pertaining to the posterior end of the back. pygidial a.
pygidial fringe (ARTHRO: Insecta) In homopteran Coccoidea, the projecting ends of the lateral margin of the pygidium; the lateris.
pygidial glands (ARTHRO: Insecta) 1. In Coleoptera, paired organs opening beneath the last abdominal tergite that function to secrete a corrosive, pungent defense fluid, or a substance that lowers surface tension of the water to increase propulsion; also called anal glands. 2. In Hymenop-tera, associated with the membrane between abdominal terga 6 and 7 of Formicidae, and when enlarged, produce a defensive secretion; also called anal glands. see post-py-gidial gland.
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