ENTO 210 Lecture Notes - Lecture 2: Brown Recluse Spider, Latrodectus, International Rice Research Institute
24 Jan 2017
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Document Summary
Class: crustacea: crustaceans, crabs, lobsters, pillbugs, shrimp, daphnia, copepod, delineated by a major joint in exoskeleton, not always obvious, cephalothorax, anterior. 3 defining characteristics: 2 major body regions, presence of 2 pairs of antennae, 5 or more pairs of legs, abdomen, posterior. Joining of the head and thoracic regions: good in butter. Intermediate host for many parasites: guinea worm disease, humans, pets, livestock in africa and asia, mesopredators in north america. Importance: mostly aquatic, food, head points down, delineated by deep segmentation that look different, 2 pair per body segment, no sting or bite, poisonous secretions not dangerous, plant pest. Importance: 2 body regions, head and body, single pair of antennae, many legs. Class: diplopoda: commonly known as millipedes, 3 defining characteristics, rounded appearance. Class: chilopoda: centipedes, 3 defining characteristics, flat appearance, 1 pair of antennae, many legs, modified first pair of legs, generalist predators, 2 body regions, head, points forward, body.
