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Insect classification lab16

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  • 1. University of SulaimaniaSchool of ScienceDepartment of Biology2nd Class Year 16th Lab. Pterygotes-Paleopteran Insects: Order Odonata Lecturer: Farhad A. Khudhur
  • 2. Objectives:•This lab. Provides familiarities with Paleopteran insectsDamselflies and Dragonflies.• Students will study old winged insect order, Odonata, indetail.Scientific content:-Order: Odonata (Damselflies and Dragonflies) - Suborder: Anisoptera - Suborder: Zygoptera
  • 3. Order: Odonata • Odonata are paleopterous, exopterygote aquatic insects, related to the Ephemeroptera Dragonfly adults are predaceous, relatively long-lived insects. • Their large compound eyes, strong chewing mouthparts, long legs, and unparalleled flight capabilities are ideal adaptations for catching and consuming insect prey.• The larvae are aquatic and are usually much longer lived.
  • 4. • The order Odonata is characterized by - chewing mouthparts, - large compound eyes, three ocelli, - small setaceous antennae, - a small prothorax,- the meso- and metathoracic segments fused into a large pterothorax, - long legs with three-segmented tarsi, - two pairs of elongate wings, - elongate abdomen, - accessory male genitalia including the intromittent organ on the venter of the second abdominal segment.
  • 5. Suborder Zygoptera (Damselflies)• Damselflies are characterized by the following structural features: - fore and hind wings almost identical in shape and venation, - wing holding is vertically upward at rest, - eyes far apart, and - larvae with three (rarely two) caudal lamellae (Caudal Gills).
  • 6. Suborder Anisoptera (Dragonflies)• Dragonflies are characterized by the following structural features: - fore and hind wings dissimilar in shape and venation, - wing holding is horizontally outspread at rest, - eyes adjacent or nearly so; and - larvae stout and without caudal lamellae,
  • 7. Dragonfly Larva
  • 8. References:•David, B. V. and Ananthakrishnan, T. N. (2004). General and AppliedEntomology. 2nd ed. Tata McGraw-hill Publishing Co. Ltd. New Delhi.India. 1184 p.•Elzinga, Richard J. (1997). Fundamentals of Entomology. 4th ed.New Jersey, Prentice-Hall, Inc. 475 pp.•Gillot, Cedric. (2005). Entomology. 3rd ed. Springer, Dordrecht. TheNetherlands. 831 pp.•Grzimek’s Animal Life Encyclopedia, 2nd edition. Volume 3, Insects,edited by Michael Hutchins, Arthur V. Evans, Rosser W. Garrison,•Resh, Vincent H. & Cardé, Ring T. (2003). Encyclopedia of Insects.USA. Academic Press, Elsevier Science, 1266 pp.