Latrodectus

Latrodectus /Lat·ro·dec·tus/ (-dek´tus) a genus of poisonous spiders, including L. mac´tans, the black widow spider, whose bite may cause severe symptoms or even death.

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Lat·ro·dec·tus (ltr-dkts)

n.

A genus of small spiders, including the black widow, capable of inflicting highly poisonous, neurotoxic bites.

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Latrodectus

a genus of poisonous spiders belonging to the dipneumomorph family Theridiidae.

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Latrodectus hasseltii

the Australian redback spider, an ecological variant of L. mactans and with the same toxicity.

Latrodectus mactans

a species found in the United States; commonly known as the black widow. In New Zealand called katipo. Satiny black with a broad sagittal red stripe in the female, which is venomous. Its bite may cause severe local pain and general paralysis.