Female Black Widow Spider with a View of the Under Side of the Abdomen

Latrodectus mactans. Spiders are “dimerosomatous - that is, have the body divided into two principal regions, the cephalothorax, or head and chest together, and the abdomen, which is generally tumid or globose...In those species which are poisonous the falces are traversed by the duct of a venom-gland.” —Whitney, 1889

Keywords

poison, poisonous, cephalothorax, falces, black widow, latrodectus mactans, poisonous spider, southern black widow, spider abdomen, venom duct, venom gland, widow spider

Galleries

Spiders, Mites and Scorpions

Source

William Dwight Whitney, PhD, LLD The Century Dictionary: An Encyclopedic Lexicon of the English Language (New York, NY: The Century Co., 1895) 5830

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