3) OPISTHOGNATHOUS (Opistho – behind ; gnathous – jaw) This type is also called hemipteroid type or opisthorhychous. Head is deflexed. Mouth parts are
directed backwards and held in between the fore legs. Eg: Stink bug.
Insect Morphology and Systematics
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II. THORAX
Second and middle tagma which is three segmented, namely prothorax, mesothorax and
metathorax. Meso and metathorax with wing are called as
Pterothorax . Thorax is made up of
three scleritic plates namely, dorsal body plate (
Tergum or
Nota , ventral body plate (
Sterna ) and
lateral plate (
Pleura ).
Thoracic nota: Dorsal body plate of each thoracic segments are called as pronotum, mesonotum
and metanotum respectively.
