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n. pl. he·mel·y·tra (-trə)
One of the forewings of a heteropteran insect, having a thick leathery base and a membranous apex.


(hɛˈmɛlɪˌtrɒn) or


n, pl -tra (-trə)
(Zoology) the forewing of plant bugs and related insects, having a thickened base and a membranous apex
[C19: from New Latin hemielytron, from hemi- + Greek elutron a covering]
hemˈelytral, ˌhemiˈelytral adj


(hɛˈmɛl ɪˌtrɒn)

n., pl. -tra (-trə).
one of the forewings of a hemipterous insect, having a hard, thick basal portion and a thinner membranous apex.
[1820–30; hem (i)- + elytron]
hem•el′y•tral, adj.
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References in periodicals archive ?
3 mm, excluding hemelytral membrane, and are typically light brown to green in color.
However, an unpublished study suggests that the genus should be restricted to species from Africa and the Middle East, a concept supported by our discovery of the transverse hemelytral fracture, which is absent in Southeast Asian taxa (see discussion of Laccocorinae).
Hemelytra: Clavus dark brown, central section of corium broadly medium brown, anterior angles of corium and basal half of cuneus pale white, anterior half of cuneus pale brown; wing membrane including veins uniformly dark fumate brown: hemelytral surface bearing scattered senti-erect, golden, simple setae only.
having posterior margin convex, round, beyond ostiole reaching to much less than 1/2 of evaporatoria, ostiole with ovate opening, evaporatoria distinct; hemelytra with 3/4th of costal margin apically curved, outer margin of corium without pale elongate lines and median large ovate spot absent, concealing entire connexiva, later without shining black patches and apical portion of tergum entirely concealed by hemelytral membrane.
Some differences distinguish the Colombian specimen from other Dicysta species: the hemelytral tubercles are conical rather than concave anteriorly; the median carina is flat in the first half and inflated in the posterior half.
In recent phylogenetic studies of Tingidae (Guilbert 2001, 2004b), the lack of pronotal and hemelytral expansions in adults, as well as the lack of outgrowths in larvae, were hypothesized as plesiomorphic conditions.
Hemelytra narrow, light yellowish, with two large black stains: one on the hemelytra cyst, excluding the very top of the cyst, and the other on the sutural area; outer margin conspicuously widening anteriorly, then slightly narrowing through the rest of the hemelytral extension (Fig.
Hemelytra: Clavus wide, claval vein raised, and surface with small bristle-like setae; claval commissure slightly longer than scutellum; costal margin of corium gently rounded from base to apex; veins strongly raised, surface sparsely covered with hispid tubercles; hemelytral membrane almost reaching apex of abdomen, with numerous anastomosing veins; angles not armed; spiracles set medial on segments, closer to side margins than to either segmental border.
costai, but can be distinguished by the dark maculae on the frons, the thicker antennal segments, the lack of well-defined, cleared circular areas at the bases of the bristlelike hemelytral setae, and the male genitalia, especially the elongate-oval right paramere.
Dorsal coloration: Head orange, with apex of juga, and outer face of ocelli black; antennal segments I and IV dark orange, and II and III dark orange with apical joint brown; pronotum orange hazel with humeral spines black; scutellum orange hazel, basally with 2 black spots lateral to midline; clavus orange hazel; corium orange hazel with 3 black spots near middle third of endocorium; hemelytral membrane dark brown; connexival segments III to VI glossy orange, VII glossy orange with posterior margin brown; abdominal segments III to VI glossy orange, VII glossy orange with wide brown spot at middle third.
2C); single hemelytral cell of membrane elongate, longer than distance from its apex to apex of membrane and longer than pronotum (Fig.