suborbital region (ARTHRO: Crustacea) In Brachyura, a narrow region bordering the lower margin or orbit.
suborbital spine (ARTHRO: Crustacea) In a decapod carapace, a spine slightly below and posterior to the middle of the orbit.
subphylum n. [L. sub, under; Gr. phyle, tribe, race] A major subdivision in classification between phylum and class.
subquadrangle n. [L. sub, under; quadri-, four; angulus, angle] (ARTHRO: Insecta) In odonatan Zygoptera, a cell just behind the quadrangle.
subradular organs (MOLL: Polyplacophora) Two eversible pads, probably of chemoreceptive function, at the base of the subradular sac.
subradular sac (MOLL: Polyplacophora) A blind sac of the posterior wall of the buccal cavity containing cushion-shaped sensory structures (subradular organs) hanging from the roof.
subrostrum n. [L. sub, under; rostrum, beak] (ARTHRO: Crustacea) In Lepadomorpha Cirripedia, a single plate below the rostrum.
subscaphium n. [L. sub, under; scaphium, hollow vessel] (ARTHRO: Insecta) In male Lepidoptera, a ventral sclerotization of the genitalia, below the anus; gnathos.
subscutellum n. [L. sub, under; dim. scutum, shield] (ARTHRO: Insecta) In some Diptera, especially Tachinidae, the anterior region of the mediotergite differentiated as a convex, transverse ridge or lobe; often called postscutellum.
subsocial n. [L. sub, under; socius, companion] (ARTHRO: In-secta) Applied to adults caring for their young for some period of time. see presocial.
subsocies n.pl. [L. sub, under; socius, companion] A term used by various authors when there is disagreement as to the definition of the word associes.
subspecies n. [L. sub, under; species, kind] A subdivision of a species inhabiting a geographic subdivision of the range of the species and differing taxonomically from other populations of the species.
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