Arachnid - 8 Legs, Spiders, Scorpions

Arachnid - 8 Legs, Spiders, Scorpions: There are many modifications of the cephalothorax, abdomen, and appendages among arachnids. The exoskeleton in made of chitin and has two parts, the epicuticle and endocuticle. Trichobothria, ocelli, and lyriform are three common types of sense organs. Most arachnids are carnivorous. Coxal glands and Malpighian tubules are the main types of excretory organs.

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