metathorax


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metathorax

[¦med·ə′thȯr‚aks]
(invertebrate zoology)
Posterior segment of the thorax in insects.
References in periodicals archive ?
As pointed out by Soto-Adames (2002), the dorsal chaetotaxy of the metathorax and 1st abdominal segments in Metasinella is reduced with respect to most Lepidocyrtus and Pseudosinella (cf.
chiruanus is characterized by the long and slender stalk between pronotum and metathorax + propodeum and by the temple being crossed by a sharp carina.
Dorsal view: prothorax smooth, not square-shaped with two dorsolateral horn-like structures that protrude only slightly; mesothorax with four and metathorax with two tiny setae; abdominal segments with spiracles extruded slightly, abdominal segments three to seven dorsally with short medially located setae; cremaster round with four pairs of curved setae.
Thoracic appendages (Table I) lacked natatory sensilla but bore short ventral spinulae (combs) on tibiae of the meso- and metathorax and all tarsi.
Metathorax + propodeum glossy, with anterior surface unsculptured; posterior surface transversely striate.
Spiracles: Located laterally in mesothorax and metathorax on papillae or tubercles, and on the first eight abdominal segments (Fig.
This clade is diagnosed by the distinct lateral intersegmental suture between meso- and metathorax, a reversal also found in Rhagadotarsinae + Trepobatinae (Damgaard, 2008b).
The mites infested most body parts, but seemed to prefer the meso- and metathorax, with many workers having mites symmetrically positioned on either side of the thorax.
Head, thorax, and legs covered with long dark brown hair; colour of vestiture between metathorax and first abdominal segment orange, rest of abdomen on dorsal side dark brown with intersegmental tufts of orange hair, ventral half completely dark brown.
minute branches become gradually shorter and effectively disappear); metepisternum with setae like those on metathorax, with short, appressed setae concentrated along upper margin.
Mesothorax subrectangular; wing pads reaching posterior margin of metathorax (Fig.