Substitute king see supplementary reproductive

substitute name A name proposed to replace a preoccupied name that assumes the same type and type-locality.

substrate n. [L. sub, under; stratum, bed] 1. A substance on which an enzyme acts. 2. see substratum.

substrate race A local race selected by nature to have a similarity of coloration with that of the substratum.

substratum n.; pl. substrata [L. sub, under; stratum, bed] The ground or other surface in or upon which organisms live, walk, crawl or are attached.

subsume n. [L. sub, under; sumere, to take] To include under; to put under another as belonging to it, i.e., in zoological classification.

subtegular ridge (ARTHRO: Insecta) A transverse ridge near the upper edge of the mesopleurum, below the tegula and base of the front wing.

subtegulum n. [L. sub, under; tegulum, covering] (ARTHRO: Chelicerata) In Arachnida, one of the sclerotized plates that protect the hematodocha of the male papal organ of some spiders.

subtorma n. [L. sub, under; Gr. tormos, socket] (ARTHRO: Insecta) In Coleoptera, the heavily sclerotized, transverse, curved process of certain Scarabaeoidea larvae, located near the proximal border of the hypopharynx.

subtriangle n. [L. sub, under; tri, three; angulus, angle] (ARTHRO: Insecta) In Odonata Anisoptera, A cell or group of cells in the wing behind the triangle.

subtribe n. [L. sub, under; tribus, tribe] In classification, a rank below the tribe and above the genus.

subtylostyle n. [L. sub, under; Gr. tylos, knot; style, pillar] (porif) 1. A monactinal megasclere with a sub-apical expansion. 2. A tylostyle with an indistinct knob at one end and pointed at the other. see tylostyle.

subulate a. [L. subula, awl] Shaped like an awl; slender and tapering to a point, with sides convex.

subumbrella n. [L. sub, under; dim. umbra, shade] (CNID) The concave oral surface of a medusa or jellyfish. see exumbrella.

subventral esophageal glands (nemata) Esophageal salivary glands lying in the subventral sectors of the posterior esophagus.

subvibrissal setae/setulae (ARTHRO: Insecta) In Diptera, the setae/setulae along the anteroventral margin of the gena.

succession see sere succinct a. [L. sub, under; cingere, to gird] Compact; contracted; reduced.

succursal nest (ARTHRO: Insecta) In social insects, a resting or hiding place constructed by workers, but not qualifying as a true nest due to the absence of brood rearing.

sucker n. [A.S. sucan, to suck] An organ creating a vacuum, utilized by various invertebrates for locomotion, ingesting or holding food, or adhering to the substrate.

suctorial a. [L. sugere, to suck] Having vacuum organs; adapted for sucking.

suffused a. [L. suffusus, to pour beneath] To overspread, as with fluid or color; to cover the surface. suffusion n.

sugent, sugescent a. [L. sugere, to suck] Suctorial.

sulcate a. [L. sulcus, furrow] Having a groove or furrow.

sulci n.pl. [L. sulcus, furrow] (ARTHRO: Insecta) Grooves of a purely functional origin, such as strengthening ridges of the head.

sulciform a. [L. sulcus, furrow; forma, shape] Being groove like or groove-shaped.

sulculus n. [L. dim. sulcus, furrow] (CNID: Anthozoa) In di-glyphic Actiniaria, having the second, sometimes small, si-phonoglyphs situated at the dorsal end of the pharynx. see sulcus.

sulcus n.; pl. sulci [L. sulcus, furrow] 1. A furrow, groove or fissure. 2. (ARTHRO: Insecta) A suture formed by an infolding of the body wall. see sulci. 3. (BRACHIO) The major depression of the valve surface, externally concave in transverse profile and radial from the umbo. 4. (CNID: Anthozoa) A groove leading into the gullet. see siphonoglyph. 5. (MOLL: Bivalvia) The radial depression of the shell surface.

sulcus, radial posterior (MOLL: Bivalvia) A groove that sets off the posterior flange from the main shell body.

sulcation n. [L. sulcus, furrow] 1. Scored by furrows or grooves. 2. Encircled by channels.

summer egg A thin-shelled, rapidly developing egg; tachy-blastic. see winter egg.

summit n. [L. summum, the highest point] 1. The apex; the top. 2. (MOLL: Bivalvia) The highest dorsal point of the shell profile when the cardinal plane is horizontal.

superclass n. [L. super, over; classis, a division] In classification, above the class and below the phylum.

superfamily n. [L. super, over; familia, family] In classification, above the family and below the order.

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