Insect sternites & pleurites

Position, Function and Figure

1. Sternites & Pleurites of Insect Prepared By Nusrat Hasan Kanika Roll No: M140604004 M.Sc. 1 st Semester (Branch Entomology) Jagannath University,Dhaka .

2. Insect Sternites The sternum (pl. "sterna") is the ventral portion of a segment of an arthropod thorax or abdomen A ventral plate of the exoskeleton; ventral equivalents of the tergites

3. Position of Sternite

4. Types of Sternites The Adaphagid Type The Haplogastious Type The Symphiogastrous Type The hologastrous Type

5. STERNITE 10 (male) In Cyclorrhapha , a sclerite between the epandrium and the phallus In Tephritidae , this term has been used for the transverse sclerite connecting the basal ends of the medial surstyli , this structure is a composite of the dorsal bridge of the hypandrium and the subepandrial sclerite of other Cyclorrhaphan Diptera The subepandrial sclerite has two anteriorly projecting lobes and one or two transverse connections or bridges. It has also been called sternite 10 or the interparameral sclerite

6. STERNITE 10 (male)

7. Function of Sternite A sclerotized sternum covers the bottom Pliable membranes separate the terga from the sterna The intersegmental membranes allow the abdomen much flexibility A requirement for respiratory movements, copulation Help in oviposition

8. Insect Pleurites Pleurites are chitinous plates in the body wall of insects and myriapods . Any of various small sclerites in the pleural area of an arthropod. Pleuritesis the membranous part of the lateral abdominal wall of some insects

9. Position of Pleurite Pleurites are only present on the thorax, while tergites and sternites are present on both the thorax and the abdomen.

10. Pleurite Functions Note the sutures in the pleurites , indicating inward projections for muscle attachment for the large muscles which move the legs and wings