06InsectAnatIIS08 - Announcements F ie ld t r ip t o F O P...

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1 Announcements Field trip to FOP this Sunday with FOP interns. Meet at Preserve at 10:00 am. Will last until 2 or so, bring sack lunch and water if interested Interested? Insect boxes available $5 per box Structure of cuticle Epicuticle Procuticle exocuticle and endocuticle made of chitin and protein Thickest layer Epidermis live cells secretes cuticle Sclerotization Hardening and darkening of chitin in exocuticle Defined areas called sclerites Relation to body surface Tergum- dorsal plate (tergite a subdivision) Sternum- ventral plate (sternite) Pleuron- lateral plates (pleurite)
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2 Structure of epicuticle Three layers present (inner, outer, superficial) Outer layer reduces dessication (color pattern, recognition) Wax layer above epicuticle Arthrodial Membrane • Soft membrane between segments and sclerites • Evident in gravid females and specialized insects (honeypot ants) • Epicuticle expands by unfolding
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