basic entomology, identification of insects and their importance

1. INSECTMORPHOLOGY &
ANATOMY
Dr. Anita Sharma Assistant
Professor (Entomology)

2. Lecture -4 INSECT INTEGUMENT
• Integument is c/ as Insect body wall or Exoskeleton.
• It is ectodermal in origin.
• Sclerotisation -Hard and dark
• Provides lining for tracheal system, some glands, parts of alimentary
canal & reproductive tract
• Cuticle not only covers the entire insect body from outside, but also the
foregut and the hindgut (ectodermal in origin) and the
tracheae.
• Insect cuticle can be further differentiated into two major parts, the non-
chitinous epicuticle and the chitinous procuticle.
• Constituents of cuticle :Chitin, Lipids & Polyphenols

3. Body wall Or Integument
- - - Insect integument consists of three distinct layers
Epidermis
Basement
membrane