latrodectus mactans

English Thesaurus

1. venomous New World spider; the female is black with an hourglass-shaped red mark on the underside of the abdomen (noun.animal)

hypernym	:	spider,
definition	:	predatory arachnid with eight legs, two poison fangs, two feelers, and usually two silk-spinning organs at the back end of the body; they spin silk to make cocoons for eggs or traps for prey (noun.animal)

member meronym	:	genus latrodectus, latrodectus,
definition	:	venomous spiders (noun.animal)