Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

494Maggenti and Gardnerjunior synonym The more currently published of two or moreavailable names for the same taxon. see synonyms, seniorsynonym.juvenile a. [L. juvenilis, young] 1. A nonscientific colloquialterm used to denote any stage of development prior toadulthood. 2. Often restricted to that stage immediatelypreceding the sexually mature adult stage. 3. In general,the immature stages resemble the adult in general morphologyexcept for gonadal development.juvenile hormone (ARTHRO: Insecta) A hormone of larvaeproduced by the corpora allata that controls the way thelarval cells differentiate at each molt.juxta n. [L. juxta, near] (ARTHRO: Insecta) 1. In Diptera, aneversible membranous distal section of the male intromittentorgan. 2. In male Lepidoptera, a sclerotized plate atthe base of the aedeagus; sometimes connected to theanellus by a thin median process that is often forked so asto surround the aedeagus; has been used as a synonym ofthe anellus of the aedeagal fulcrum.juxtacardo n. [L. juxta, near; cardo, hinge] (ARTHRO: Insecta)An extension of the cardo from cardo proper toward thesubmentum.juxtacoxal carina (ARTHRO: Insecta) In Ichneumonidae, anarched carina cutting off a lenticular area of the lower partof the metapleura; when complete, the carina arches betweenthe bases of the hind and middle coxae.juxtaposition n. [L. juxta, near; positus, place] A placing orbeing placed side by side.juxtastipes n. [L. juxta, near; stipes, stalk] (ARTHRO: Insecta)An extension of the stipes toward the mentum.