mesothorax


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Related to mesothorax: mesothoracic

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 ?
The remarkable feature in this new species are the presence of two very large papillae without setae in dorsal region of collar segment, and dorsal sclerotized plate occupying pro and mesothorax, absent in other neotropical species of Clinodiplosis.
Pronotum long, not swollen above epomia, the epomia itself strong but short, not reaching upper margin of pronotum; mesoscutum centrally rather finely and sparsely punctate with hairs, laterally weakly punctulate with setae; notauli quite strongly impressed anteriorly; mesopleuron polished with some sparse punctures; epicnemial carina dorsally sinuous, not reaching anterior margin of mesopleuron and exceeding level of lower corner of pronotum; sternal part of mesothorax 1.
0 mm), slender and fairly elongate for the genus with the mesothorax almost parallel sided; highly variable in coloration and sculpturing of the head, body and legs.
Once relaxed, holds the specimen with fine forceps and with another pair slightly separate the head from prothorax and mesothorax.
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.
A general size correlation might be expected between the wing and thorax (strictly, the dorsal mesothorax or notum), because these two structures are derived from the same imaginal disc (Cowley and Atchley 1990).
Zhejiang, China) placed on the ventral side of the mesothorax, each male was attached to the end of the flight mill arm.
DIAGNOSIS: Easily distinguished from all other Australian emesine species by a combination of its unique brown and white coloration, wing venation, extremely constricted pronotum, and swollen mesothorax.
Epipleuron: ventral portion of the elytron, situated external to the lateral margins of mesothorax, metathorax and abdomen.
Below the postocular stripe, head, pronotum, and a portion of the anterior segment of the mesothorax grayish-white.
One leg I (always on same side of a given pair, on different sides in different pairs) rapidly tapped the side of female pro- and mesothorax as leg moved forward and backward repeatedly in short bursts of activity.