metathorax

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metathorax

[¦med·ə′thȯr‚aks]
(invertebrate zoology)
Posterior segment of the thorax in insects.
References in periodicals archive ?
2012) suggested the metathoracic spiracle is likely to play a role in spreading the secretion in terrestrial heteropterans and discussed the problems encountered by half-spherical species.
Each crawl began at the terminal segment and proceeded anteriorly through the abdomen as a series of phase-delayed steps in sequential segments, ending at the metathoracic segment.
The Heteroptera, or "true bugs", are among the most diverse groups within the Hemiptera, and are usually identified by the strong odor produced by the metathoracic scent glands (Schuh & Slater 1995).
The reduction of metathoracic alae and of dispersal power of carabid beetles along the evolutionary pathway into the mountains.
These five characters were the radial cell, cell radius one, and medio-cubital crossvein on the forewing; the metathoracic femur; and the antennal scape (see Ross and Robertson [1990] for descriptions of the characters).
Thorax: Dorsally brown, ventrally white; prothoracic leg creamy; meso- and metathoracic legs with femur brown dorsally and white ventrally, the other segments light brown.
Femora dark red-brown, metathoracic femora with yellow-brown proximal and distal ends, mixed dark red-brown and pale yellowish setose.
2+3] sinuous just before margin; crossvein r-m at distal three-fourths of cell dm; metastemum bare; and postcoxal metathoracic bridge completed (Carvalho et al.
Natatory sensilla absent; ventral spinulae present on tibiae and tarsi, not as well developed on metaleg; coxa robust and elongate, coxal suture prominent on anterior surface; trochanter divided into two regions, lTr and 2TV; respective lengths (in mm) of individual segments of pro-, meso-, and metathoracic legs: coxae, 1.
Macropterous form: Thorax: Pronotum wider than long, with hispid tubercles, subquadrate, flattened, not declivous; frontal angles rounded, not projecting; humeral angles obtuse, not exposed; collar indistinctly depressed, not separated by a distinct incised line; middle third of pronotal disk with a broad longitudinal sulcus; anterolateral margins obliquely straight, roughly granulate; posterior margin concavely arcuate before base of scutellum; prosternum depressed; meso and metasternum sulcate; anterior lobe of metathoracic peritreme weakly reniform, posterior lobe subacute, raised; evaporative area short; posterior margin of metapleura with outer third obtusely rounded, and slightly raised.
Leptomelopa latipes Meigen is attracted to hexyl truly rate and (E)-2-hexenyl butyrate, common metathoracic scent gland compounds of plant bugs (Heteroptera: Miridae) (Zhang & Aldrich 2004).