integumental vesture or setae (ARTHRO: Insecta) Numerous spines or hairs on the epidermis of syrphid larvae, excluding the segmental spines.
intensity n.; pl. -ties [L. intentus, intent] The total number of parasites in an individual. see burden.
interambulacral areas (ECHINOD: Echinoidea) The radially arranged arms (typically 5) that do not bear tube feet or podia. see ambulacral areas.
interambulacral plates (ECHINOD: Crinoidea) Additional calyx plates between the arm bases in stalked crinoids.
interantennal setae (ARTHRO: Insecta) In coccids, a group or transverse row of setae on the ventral aspect of the head between the articulation of the antennae.
interantennal suture (ARTHRO: Insecta) In Siphonaptera, a suture extending between the bases of the antennae.
interantennular septum (ARTHRO: Crustacea) In some Mala-costraca, a plate separating antennular cavities; proepis-tome.
interbasal muscle (ECHI) A strong, narrow muscular band of tissue connecting the sheaths of the two ventral setae.
interbrachial a. [L. inter, between; brachium, arm] Between adjoining arm tips, rays or brachial plates.
interbreed n. [L. inter, between; A.S. brod, broad] Individuals capable of actual or potential gene exchange by hybridization.
intercalary a. [L. intercalaris, that which is inserted] Inserted or introduced between others; interpolated.
intercalary appendages (ARTHRO: Insecta) The rudimentary post antennal or premandibular appendages.
intercalary segment (ARTHRO: Insecta) The premandibular, tritocerebral segments.
intercalary stage (ARTHRO: Diplopoda) A non-reproductive stage between two reproductive stages in which the male gonopods and other secondary sexual structures regress.
intercalary vein (ARTHRO: Insecta) 1. An extra longitudinal wing vein of Ephemeroptera. 2. Convex wing vein which follows the crest of a ridge. 3. Concave wing vein on the bottom of a furrow. 4. In Diptera, sometimes applied to the posterior branch of the fourth vein.
intercalary walls (BRYO: Gymnolaemata) The outer walls of zooids attached to each other in a linear series.
intercellular a. [L. inter, between; dim. cellula, little cell] Lying between cells.
intercervical groove (ARTHRO: Crustacea) In Nephropidae, an oblique groove on the carapace that connects the postcervical and cervical grooves.
interchange n. [L. inter, between; combiare, to exchange] Reciprocal translocations between nonhomologous chromosomes.
intercheliceral gland (ARTHRO: Chelicerata) In Acari, unpaired prosomatic gland emptying between the chelicerae; function unknown.
interchordal areas (NEMATA) The nonthickened regions of the hypodermis devoid of nuclei.
interchromomeres n. [L. inter, between; Gr. chroma, color; meros, part] 1. Regions connecting adjacent chromomeres. 2. (ARTHRO: Insecta) Lighter staining areas of the giant chromosomes in Diptera.
interchromosomal a. [L. inter, between; Gr. chroma, color; soma, body] Reactions between chromosomes.
intercostal a. [L. inter, between; costa, a rib] (MOLL) Placed between the ribs of a shell.
intercostal vein (ARTHRO: Insecta) The subcosta.
intercostate n. [L. inter, between; costa, rib or side] (MOLL)
Between ribs or ridges.
intercoxal process (ARTHRO: Insecta) In Coleoptera, a pros-ternal process, occasionally enlarged, partly concealing the coxae.
interdentum n. [L. inter, between; dens, tooth] (MOLL: Bival-via) A shelly plate between the pseudocardinal and lateral teeth.
interface n. [L. inter, between; facies, countenance] The common surfaces of two bodies.
interfrontal bristles (ARTHRO: Insecta) In Diptera, bristles or hairs on the frontal vitta.
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