apophysis n.; pl. -ses [Gr. apo, away; phyein, to grow] 1. An internal or external tubercular or elongate process of the body wall; a prominence, swelling or expansion. see apodeme, apodome. 2. (ARTHRO: Insecta) see pleural apophysis, sternal apophyses. 3. (moll) a. In Bivalvia, a large, styloid projection, one in each valve, extending from beneath the umbos to which the foot muscles are attached. b. In Polyplacophora, see sutural laminae.
apophystegal plates (ARTHRO: Insecta) In Orthroptera, plate-or blade-like sclerites covering the gonapophyses.
apopore n. [Gr. apo, away; poros, passage] (PORIF) An aper ture forming an exit from the apochete; may be equivalent to an oscule.
apopyle n. [Gr. apo, away; pyle, gate] (PORIF) An exhalent aperture from a choanocyte chamber.
aporrhysa n.pl. [Gr. aporrhyein, to flow away] (PORIF) The exhalent canals. see epirrhysa.
aposematic a. [Gr. apo, away; sema, signal] Warning coloration or structures that repel predators, also including movements, sounds, smells, etc. see allosematic color, sematic.
aposeme n. [Gr. apo, away; sema, signal] A population in which all the individuals, even though taxonomically distinct, share the same aposematic coloration.
apostatic a. [Gr. apostates, deserter] Widely departing from the norm; said of a phenotype that differs strikingly from the search image of a predator.
a posteriori weighting The weighting of taxonomic characters on the basis of their proved contribution to the establishment of sound classifications. see a priori weighting.
aposymbiotic a. [Gr. apo, away; syn, together; bios, life] Referring to an organism separated from its symbiotes; sym-biote-free; usually refers to mutualistic symbiotes. see mutualism.
apotele n. [Gr. apo, away; telos, end] (ARTHRO: Chelicerata) The terminal eudesmatic segment of the appendages of mites, generally constituting two tendons and two articulation-points. apotelic a. see pretarsus.
apotome n. [Gr. apo, away; tomos, a cut] A part or subdivision appearing as if separated from the whole.
apotorma n.; pl. -mae [Gr. apo, away; tormos, socket] (ARTHRO: Insecta) In Scarabaeoidea larvae, a process that extends forward from the torma between the pternotorma and the interior end of the torma.
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