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 ?
However, the fact that the massive lymphangiomatous cyst provoked a functional left pneumonectomy due to its size and position in the mesothorax has not been described previously in Gorham-Stout disease.
One pair of setae on each mesothorax and metathorax segment, and a pair on abdominal segment VIII, each arising from a tubercular base along the anterior-lateral margin of the vasiform orifice.
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, epomia itself strong but short, not reaching upper margin of pronotum; mesoscutum punctulate with setae, laterally with punctures finer and weaker; notauli present, but weak and shallow; mesopleuron mostly punctulate with setae; epicnemial carina rather sinuous, reaching anterior margin of mesopleuron, exceeding level of lower corner of pronotum; sternal part of mesothorax 1.3x as long as mid coxa.
Flea bodies have three major parts: head (triangular in shape with club-shaped antennae and downward pointed mouthparts), thorax (contains three pairs of legs and has three distinct segments called the prothorax, mesothorax, and metathorax), and abdomen (contains 10 segments in adults with the caudal segment containing a dorsal sensilium that detects vibrations and temperature changes for host detection).
Spiracles: Located laterally in mesothorax and metathorax on papillae or tubercles, and on the first eight abdominal segments (Fig.
There is a relatively strongly supported sister group relationship between Hydrometridae and Hermatobatidae, which was diagnosed on the basis of upright egg deposition and a distinctly prolonged mesothorax (Damgaard, 2008b).
The dorsal scolus of the prothorax, mesothorax, and the ninth abdominal segment are longer than the others, a larval feature very common among Hemileucinae (Lemaire, 2002); the scoli are slightly clearer than the integument, but their urticating setae are darker.
Mesothorax and Metathorax.- Scutellum black, quadrate, clothed with dense white hairs; elytron about twice as long as broad; striae deep, punctate, strial intervals punctulate; distance between striae at base subequal; striae 2, 3 and 4 with small denticles at their bases; humerus punctulate, glabrous, shiny black (Fig.