gonostyle

gonostyle

[′gän·ə‚stīl]
(invertebrate zoology)
Gonapophysis of dipteran insects.
References in periodicals archive ?
Gonocoxite with a basal tuft of bristles and gonostyle with four well-developed spines with the presence of a preapical setiform spine and paramere simple, without protuberance in the pre-apical region of the ventral margin, epandrial lobe with rounded apex and narrower than the gonocoxite.
Gonostyle with four spines and pre-apical spiniform seta.
Eyes separated by 1.0 (male) or 1.5-2.0 (female) facet diameters; antenna with 14 flagellomeres, the 3 apical subequal are reduced in size, 11th and 12th fused, 14th separated and spherical; ascoids Y-shaped; wing with medial fork incomplete; female subgenital plate pilose on distal half and with lateral margins convex; male terminalia with gonostyle coniform with a group of alveoli at base and short setae sparsealy distributed, aedeagus asymmetrical, bifid with left branch little longer and wider in dorsal view, one short sinuous paramere articulat with aedeagus and a small projection of the hypandrium, gonocoxal apodeme strongly sclerotized, pilose ventrally and with rounded distal margin.
7 and 8): hypandrium stripe-like with a small triangular posterior projection on one side, gonocoxites with a group of alveoli on lateral margin, gonostyli little longer than gonocoxite, coniform, with acute apex, a group of alveoli at base and short sparsely distributed setae on apical 2/3; gonocoxal apodeme strongly sclerotized, pilose ventrally and with rounded distal margin; aedeagus bifid, left branch little longer and wider in dorsal view, one short sinuous paramere articulates with aedeagus and ends on the small projection of the hipandrium; epandrium as long as wide, pilose, surstyli coniform, 1.5X the length of gonostyle, with one tenaculum at apex.
1C, D): With hypandrium narrow, straight; gonostyle 1.5 x length of gonocoxite; gonostyle basally with a cluster of lateral setae, with scattered spiniform sensilla along length; gonocoxal condyles triangular in dorsal and ventral views; aedeagus asymmetrical; basiphallus broad in dorsal view, connected laterally to parameres by parameral-aedeagal membrane, medially to distiphallus, morphodorsally with pointed connection to ventral epandrial plate; distiphallus comprised of two lateral phallomeres and morphodorsal phallic membrane forming duct; distiphallus twisted 90[degrees] to the left; parameres triangular with a morphoventral projection carrying small, verruca-like rugae; epandrium (Fig.
Etymology: The specific name was initially proposed by Brian Stuckenberg, the gonostyle of the male terminalia being shaped like a crab claw.
Gonocoxite well developed, distal end somewhat truncate (lateral view) and broadly bifurcate (ventral view); gonostyle well developed, curved toward epandrium (lateral view).