2. THORAX
Middle tagma
Three segmented - pro, meso and meta
Meso and meta thorax with wing are called as
Pterothorax
Thorax is made of three scleritic plates
1. dorsal body plate - Tergum or Nota
2. ventral body plate (Sterna)
3. lateral plate (Pleura)
3. THORACIC NOTA
3 segments - pronotum, mesonotum & metanotum
respectively
Pronotum - undivided & Saddle shaped in grass hopper,
Shield like in cockroach
Pterothoracic notum - have 3 transverse sutures
(Antecostal, Pre scutal and Scuto-scutellar)
&5 tergites(Acrotergite, Prescutum, Scutum, Scutellum
and Post-scutellum)
4. THORACIC STERNA
Vental body plate - prosternum,
mesosternum and metasternum
Made up of a segmental plate called
Eusternun and a intersternite called Spinasternum
Eusternum - made of three sclerites -
presternum, basisternum and sternellum
5. THORACIC PLEURA
Lateral body wall between notum & sternum
Selerites of pleuron is called as pleurites
fuse to form Pleural plate
Pleural plate is divided into anterior episternum
and posterior epimeron by Pleural suture
Pterothoracic pleuron provides space for
articulation of wing and
Two pairs of spiracles are also present in the
mesopleuron and metapleuron.
6. ABDOMEN
Third and posterior tagma
This tagma is made up of 9-11 Uromeres
(segments) and is highly flexible
abdominal segments are interconnected by a
membrane called conjunctiva
Each abdominal segment is made up of only two
sclerite
1. Tergum 2. Sternum
7. ABDOMEN
Eight pairs of spiracles in - first eight
abdominal segments
in addition to a pair of tympanum in the first
abdominal segment
Eight and ninth segments - female genital
structure
Ninth segment - male genital structure.
Cerci
