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prosternum

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
prosternum [prəʊˈstɜːnəm]
n pl -na [-nə], -nums
(Life Sciences & Allied Applications / Zoology) the sternum of the prothorax of an insect


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Prosternum (stn1) strongly sclerotized with a well-developed median ridge and transverse ridges; all prosternal setae absent.
2 times as long as posterior notopleural setae; notopleuron and lateral and ventral margins of scutellum with black hairs, prosternum, propleuron and anepimeron all with hairs, katepimeron bare, meron with row of setae; anterior and posterior spiracles dark brown, katepisternal setae 2+1.
Prosternum sunken, with posterior third in front of the area between fore legs produced into narrowed acute, tubercle; mesosternum and metasternum at midline with wide longitudinal furrow; metathoracic peritreme auriculiform; evaporating area poorly developed.
 
 
 
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