BIOL 2030 Chapter Notes - Chapter 6: Metathorax, Prothorax, Mesothorax

• School: York University
• Department: Biology
• Course: BIOL 2030
• Professor: Scott Kelly

Document Summary

Cervical groove subdivides carapace head & thorax: rostum, eyes, telson, lateral portion covers gill chamber. Biramous appendages; uropod air of paddle-shaped structures, forming tail with telson (not an appendage, anus opens here: walking legs: uniramous (expodite lost); all 5 chelated defense & grasp/tear food. All but 5th attached to podobanch (gill coxopodite) Waxy exoskeleton; body 3 segments: head, thorax, abdomen tagmata . Forewing elytron, hindwing (used for flight: attach to prothorax & metathorax, spiracles (tracheal openings) lateral edge of mesothorax & metathorax [continue to abdomen, 8 pairs total] Large compound eyestubular heart running below transparent dorsal cuticle of abdomen. Torax prothorax, mesothorax, metathorax; each a pair of legs: coxa, trochanter, femur, tibia, tasus (appendage segments, basal to distal, tergites dorsal elements of abdomen; sternites ventral elements of abdomen. Male abdomen narrower (than female: pregenital segments, 1-7 on females, 1-8 on males, genital (fem=8,9), male=9, postanal gonopyses male grip female"s ovipositor.