System Glossary
 Glossary Search for Arachnida (Search Options)

Definition of Term

(English) Spiders, scorpions and mites. A class under phylum Arthropoda. Chelicerate, i.e. clawed anterior appendages. Body divided into prosoma (cephalothorax) and opisthosoma (abdomen). Four pairs of walking legs. No antennae. Spiders secrete silk from glands.

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