hemelytron

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hemelytron

(hĕ-mĕl′ĭ-trŏn′)
n. pl. hemely·tra (-trə)
One of the forewings of a heteropteran insect, having a thick leathery base and a membranous apex.
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--Paranota if explanate without basal fold; costal margin of hemelytra not upturned; pronotal hood if with crest, not curved downward over head and extending beyond antennal insertion 8
Hemelytra hyaline, somewhat tinged with maroon; apex of clavus dark brown; apex of embolium and apical 1/3 of cuneus infuscate; membrane pale grayish brown, semitransparent, with slightly brownish veins.
The area under the wings was divided into 2 distinct portions, the forewings (hemelytra) that cover the abdomen, i.e., the coriaceous anterior portion, and the membranous posterior portion (Fig.
1B) with small ovate aperture, peritreme well-developed, sword-shaped with apex subacute and facing upward, evaporatoria large and very well-defined; membrane of hemelytra equal to abdomen.
The species shows small to large size (5-25 mm) specimens; they generally present a rather uniform color, rarely with more or less conspicuous markings; the hemelytra with a single cell and the hind wings with a transverse thickening; the pretarsi with short arolia, and the phallosoma with spinelike processes (Wygodzinsky, 1966).
Diagnosis: Aneurocoris insolitus can be distinguished from other species of Naucoridae in Tanzania by the entirely coriaceous hemelytra which are devoid of claval and embolar sutures and membrane (Fig.
General coloration dark brown, with pale markings on scutellum and hemelytra, legs predominantly golden-yellow (Fig.
sagillata in the shape of the tubercles of the hemelytra, which are conical instead of concave anteriorly; in the more flattened and expanded paranota; and in having a rather different coloration pattern.
2A) ovate, obliquely placed with well-developed sword-shaped peritreme with anterior margin a little concave, evaporatoria very well-defined; membrane of hemelytra almost equal to tip of abdomen.
This genus is characterized by the spheric hood, the absence of occipital spines, and by the two cysts, one on the posterior pronotal projection and one on the posterior region of the discoidal area of the hemelytra.
DIAGNOSIS: Pinophylus is distinguished from other conifer inhabiting genera of Phylini by the distinctive sexual dimorphism, with the costal margins of the hemelytra elongate and parallel-sided in the male and shorter and subovoid in the female; the brownish black dorsum with inconspicuous dark simple setae; the pretarsus with the base of the claw expanded and the pulvillus small; and the endosoma composed of two straps with a subapical secondary gonopore.
Within Belostomatinae water bug species (Heteroptera, Belostomatidae) it has been hitherto believed that the completion of embryonic development is successful only if eggs are incubated on male hemelytra. Nevertheless, we found egg successful hatching from a back-brooding Belostoma elegans (Mayr) and B.