mesothorax

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mesothorax

(mĕz′ə-thôr′ăks′, mĕs′-)
n. pl. meso·thoraxes or meso·thoraces (-thôr′ə-sēz′)
The middle of the three divisions of the thorax of an insect, bearing the middle pair of legs and the first pair of wings.

mes′o·tho·rac′ic (-thə-răs′ĭk) adj.

mesothorax

the middle of the three thoracic segments of insects.
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References in periodicals archive ?
Male femora all unarmed (just a slight thickening of the dorsal carina of the mesothoracic femur, but no spine is developed).
No yellow markings on lateral lobes of pronotum, but diffuse yellow color on the sides of the mesothoracic tergum in some individuals.
Mesoepimeron: posterior region of the mesothoracic pleuron, situated anteriorly to the metaepisternum.
Tarsal claw on pro-and metathoracic legs shorter than those of mesothoracic legs.
Ventral view: Round top of head with a prominent medial dorsoventral depression; labial palpus a small triangle posterior to labrum; labrum bilobed; pilifers not prominent; maxillary palpus absent; forefemur visible, prothoracic legs (foreleg) three-quarters length of forewing, mesothoracic leg (midleg) extends entire length of forewing and antenna extending about seven-eighths length of forewing; hind tarsus extends just beyond length of forewing; abdominal segments 5 and 6 with vestigial prolegs; abdominal segment 8-10 with genital orifice anteriorly, anus posteriorly with lateral conical depressions.
Pronotum usually cylindrical or sometimes (Mezentia, Cristobalina) selliform, very short, often exposing the mesothoracic notum.
Holotype crux (Condition: Fair; both antennae broken off beyond pedicels; right palp with terminal palpomere missing; left mesothoracic leg broken off beyond trochanter.
General color brown, with three yellow-cream spots below the eyes; lateral lobes of pronotum with light yellow longitudinal band cut by the second transverse sulcus; pleurae with the yellow-cream band starting in the anterior edge of mesothoracic epimeron; dorsal face of hind femora with three black bands; hind tibiae brown.
Condition: Fair; mesonotum cracked, especially anteriorly, but reasonably intact (most macrosetae broken); both mesothoracic legs are broken off beyond trochanters.
5 mm long, with large oval lateral eyes and strong, chewing mouthparts; prothorax with lateral extensions, but veins not preserved; prothoracic legs less strong than mesothoracic legs, metathoracic legs not visible; left forewing, preserved length about 24 mm, width 10.