Chapter 14. The Arthropods: Blueprint for Success. Evolutionary Perspective. Metamerism modified by tagmatization Chitinous exoskeleton Paired, jointed appendages Ecdysis Ventral nervous system Coelom reduced to cavity around gonads Open circulatory system Complete digestive tract
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The Arthropods: Blueprint for Success
Figure 14.2 Evolutionary relationships of the arthropods to other animals.
Figure 14.7 A eurypterid, Euripterus remipes.
Figure 14.8a Limulus polyphemus.
Figure 14.10 An arthropod seta (a) and an eye (ocellus) (b).
Figure 14.15 (a) Black widow spiders (Lactrodectus mactans) has a neurotoxic venom. (b) Brown recluse spiders (Loxosceles reclusa) have a histolytic venom.
Figure 14.16 Order Opiliones (Leiobunum sp).
Figure 14.17 Dermatophagoides farinae is common in homes and grain storage areas.
Figure 11.18 Ixodes scapularis transmits the bacteria that causes Lyme disease.
Figure 14.19 Class Pycnogonida
Figure 14.20 Crustacean body form. (a) External anatomy. (b) Biramous appendages.
(a) Nauplius larva of a barnacle. (b) Zoea larvae of a crab.
Figure 14.26a Order Isopoda.
Figure 14.26b Order Amphipoda.
Figure 14.27 Order Cladocera.
Figure 14.1 Subclass Copepoda.
(a) Internal structure of an acorn barnacle. (b) A stalked barnacle (Lepas).