sternite


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sternite

[′stər‚nīt]
(invertebrate zoology)
The ventral part of an arthropod somite.
The chitinous plate on the ventral surface of an abdominal segment of an insect.
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This is a small subfamily characterized by the presence of a blunt process on the right maxillary stylet; the pedicellus with membranous rings inserted between sclerotized areas; the hind wing with a broad postcubital sector; hook-shaped parameres; endosomal struts absent; genital sclerites hidden between sternite 7 and tergite 8; proximal portion of the lateral spermathecal duct has a very elaborate and thick wall; they also show a bifid scutellar posterior process (Weirauch, 2008).
For all traits except sternite bristle numbers, posterior lobe area, and anal plate area, the following isofemale lines were used.
Accessory setae Pla on sternites l--VI sensilliform, on sternite VII setiform, short, Pla length on sternites I[?
The only Patagonian species of Stilobezzia (Acanthohelea) in which males have the gonostylus abruptly curved and the gonocoxite has a conspicuous protuberance on proximal inner margin; females have two large, greatly elongated flask-shaped spermathecae and sternite 8 with a U-shaped posteromedian excavation (Figs.
Mesonotum without well defined golden lines, abdominal sternite 3rd, 4th segments with apically black band and palpi of female one third length of proboscis.
Kirk-Spriggs, Malaise trap, indigenous Afromontane forest, BMSA(D)25803, two eggs present: in prescutum and in left ventral side of syntergite 1+2 (adjacent to sternite 1) (Fig.
Anterior genital sternite with 17 small simple setae, posterior genital sternite with 4.
Pheromonal secretions from glands on the 5th abdominal sternite of hydropsychid and rhyacophilid caddisflies (Trichoptera).
Female: GENITAL CAPSULE: abdominal sternite VII with plica triangular, wide, reaching anterior border of sternite; fissura not clearly evident; gonocoxae I squarish, enlarged dorso-ventrally; paratergite VIII nearly triangular, apically rounded; paratergite IX square, medium-sized, apically rounded.
Sternites I-IV with smooth tegument, spiracles small and slightly elliptic; sternite V: smooth in the anterior half, posterior half slightly granular, with four longitudinal carinae poorly marked.
After anchoring his genital hooks under the posterior edge of the female's abdominal sternite 6 (Figs 1h, i), the male everts his phallic lobes (Figs 1h, i) and, upon genital coupling, passes a spermatophore (a packet containing the sperm) (Fig.