Latrodectus corallinus

Latrodectus corallinus is a species of widow spider native to Argentina. It is approximately 12 millimetres (0.47 in) in size, and is primarily black with large, red markings on its abdomen, as well as a red, square-like ring under its abdomen.
== Description ==
Latrodectus corallinus, like its North American relatives, is found both outdoors and indoors, and is commonly found in agricultural fields.
Latrodectus corallinus, like most species of Latrodectus, is not aggressive. The peak time of activity for Latrodectus corallinus is between the months of December and March (summer in the Southern Hemisphere).
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