complementation n. [L. complementum, something that completes] The appearance of wild-type phenotype in an organism or cell containing two different mutations combined in a hybrid diploid.
complete coverage see valve coverage complete metamorphosis (ARTHRO: Insecta) The transformation period encompassing larva, pupa and adult; holometabolous metamorphosis. see incomplete metamorphosis.
complex n. [L. complexus, entwine] Pertaining to a number of related taxonomic units, often units in which the taxonomy is difficult or confusing. see group.
complexus n. [L. complexus, entwine] An aggregate.
complicant a. [L. cum, with; plicare, to fold] 1. Folding or extending over another. 2. (ARTHRO: Insecta) The elytron.
complicate a. [L. cum, with; plicare, to fold] Folded longitudinally; folded together or in an irregular manner.
composite a. [L. cum, with; ponere, to put] 1. A component part; compound. 2. (ANN: Oligochaeta) Pertaining to certain stalked glands of pheretimas annelids that contain several similar units.
composite nest (ARTHRO: Insecta) A nest inhabited by a communal colony. see compound nest.
compound a. [L. cum, with; ponere, to put] Composed of several elements of similar or dissimilar parts united into a single structure.
compound antenna A capitate antenna comprised of several joints.
compound eye (ARTHRO) A composite optic organ, the external surface consisting of circular facets that are very close together, or of facets in contact and more or less hexagonal in shape. see mosaic theory.
compound nest (ARTHRO: Insecta) A nest inhabited by two or more species of social insects, where broods of each species are kept separate. see mixed nest.
compound ocellus Any ocellate spot containing three or more circles of color.
compound phanere In phanerotaxy, composed of two different elements, one basal and one distal.
compound rostrum (ARTHRO: Crustacea) In balanomorph barnacles, a compartmental plate formed by fusion of ros-trolaterals with rostrum or of fused rostrolaterals. see rostrum.
compound skeletal wall (BRYO: Stenolaemata) An interior skeletal wall, calcified on the edges and both sides; the vertical wall.
compressed a. [L. compressus, pressed together] Flattened from side to side or top to bottom; nearly flat, with reduced thickness.
compression n. [L. compressus, pressed together] A fossilized organism's carbonized remains produced by compressive forces.
compressor n. [L. compressus, pressed together] A muscle that serves to compress.
compressor of the labrum (ARTHRO: Insecta) The single or paired median muscle attached on the anterior and posterior walls within the labrum.
Comstock-Kellogg glands (ARTHRO: Insecta) In some acridid Orthoptera, a pair of glands thought to produce a sex-at-tractant substance.
Comstock System or Comstock-Needham (ARTHRO: Insecta) The principal wing veins and their branches named and numbered.
conarium n.; pl. -aria [L. conus, cone] (CNID: Hydrozoa) The earliest larva known that becomes a primary gastrozooid, and later develops an enlarged pneumatophore.
concameration n. [L. cum, with; camera, chamber] 1. Divided into chambers or cavities. 2. An arched hollow near the hinge area of a shell.
concatenate a. [L. cum, together; catena, chain] To join or link together; connect in a series or chain; having a series of points placed in regular order.
concave a. [L. cum, with; cavus, hollow] Rounded and hollow, as the interior of a sphere. see convex.
concavoconvex a. [L. concavus, hollowed or arched inward; convexus, arched outward] Pertains to being concave on one surface and convex on the other.
concentric a. [L. cum, with; centrum, midpoint of a circle] Something having a common center, i.e., lines or ridges curving around a center; arcs having the same center. see comarginal.
conceptacula seminis (ARTHRO: Insecta) A mesodermal organ of certain females for the storage of sperm after deposition into a mesospermalege.
conceptive a. [L. concipere, to receive] Capable of conceiving.
conch n. [L. concha, shell] (MOLL: Gastropoda) A trumpet shell; a large marine univalve shell.
concha n.; pl. -chae [L. concha, shell] Any structure shaped like a shell.
conchate a. [L. concha, shell; -atus, provided with] 1. Con-chiform. 2. (ARTHRO: Insecta) In Orthoptera, having a shell-like inflation of the auricle in the tibia.
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