Spermoduct see sperm duct

spermora n. [Gr. sperma, seed; L. os, mouth] (ARTHRO: Insecta) In Isoptera, the external opening of the spermathe-cal duct.

sperm sacs 1. (ANN) Seminal vesicles or testis sacs or sper-mathecae. 2. (MOLL: Cephalopoda) see spermatangium.

sperm web (ARTHRO: Chelicerata) In Arachnida, a web on which male spiders deposit the semen before taking it into the palpus.

sphaeridium n.; pl. -idia [Gr. dim. sphaira, ball] (ECHINOD) Minute, spherical bodies covered by ciliated epidermis, usually lodged in pits in the test or almost completely enclosed; confined to the ambulacral areas around the mouth or scattered along the entire ambulacra; believed to be gravity receptors.

sphaeroclone n. [Gr. dim. sphaira, ball; klon, twig] (PORIF) A megasclere spicule with a subglobular desma produced by swelling of the centrum.

sphecology n. [Gr. sphex, wasp; logos, discourse] The study of wasps.

sphecophile n. [Gr. sphex, wasp; philos, love] (ARTHRO: In-secta) A symbiont of wasps; any organism that must spend at least a portion of its life cycle in a wasp colony.

sphenoid a. [Gr. sphen, wedge; eidos, like] Wedge shaped; cuneate; cuneiform.

spherasters n. [Gr. sphaira, ball; aster, star] (PORIF) A large-centered spicule with many definite rays.

spheres n.pl. [Gr. sphaira, ball] 1. Any globular body. 2. (PORIF) Rounded bodies in which growth is concentric around a center.

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