juliform a. [ Julus, generic name; L. forma, shape] (ARTHRO: Diplopoda) Having a cylindrical trunk and fused tergites, pleurites, and sternites as in the order Julida.
junctional complex Specialized area of adhesive contact between cells.
junior homonym The more currently published of two or more identical names for the same or different taxa. see homonym, senior homonym.
junior synonym The more currently published of two or more available names for the same taxon. see synonyms, senior synonym.
juvenile a. [L. juvenilis, young] 1. A nonscientific colloquial term used to denote any stage of development prior to adulthood. 2. Often restricted to that stage immediately preceding the sexually mature adult stage. 3. In general, the immature stages resemble the adult in general morphology except for gonadal development.
juvenile hormone (ARTHRO: Insecta) A hormone of larvae produced by the corpora allata that controls the way the larval cells differentiate at each molt.
juxta n. [L. juxta, near] (ARTHRO: Insecta) 1. In Diptera, an eversible membranous distal section of the male intromit-tent organ. 2. In male Lepidoptera, a sclerotized plate at the base of the aedeagus; sometimes connected to the anellus by a thin median process that is often forked so as to surround the aedeagus; has been used as a synonym of the anellus of the aedeagal fulcrum.
juxtacardo n. [L. juxta, near; cardo, hinge] (ARTHRO: Insecta) An extension of the cardo from cardo proper toward the submentum.
juxtacoxal carina (ARTHRO: Insecta) In Ichneumonidae, an arched carina cutting off a lenticular area of the lower part of the metapleura; when complete, the carina arches between the bases of the hind and middle coxae.
juxtaposition n. [L. juxta, near; positus, place] A placing or being placed side by side.
juxtastipes n. [L. juxta, near; stipes, stalk] (ARTHRO: Insecta) An extension of the stipes toward the mentum.
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