Dasymutilla occidentalis Dasymutilla occidentalis Dasymutilla occidentalis (red velvet ant or eastern velvet ant), is a species of parasitoid wasp native to the eastern United States. It is commonly mistaken for a member of the true ant family, as the female is wingless. The species ranges from Connecticut to Missouri in the north and Florida to Texas in the south. Other common names include cow ant and cow killer. The eastern velvet ant is the largest of the velvet ant species in the United States, attaining an approximate length of 0.75 in (1.9 cm). Adults display aposematic coloration, consisting of black overall coloring
Myrmecia (ant) which was to determine what native Australian ants were associated with ant sting anaphylaxis, 265 of the 376 participants in the study reacted to the sting of several "Myrmecia" species. Of these, the majority of patients (176) reacted to "M. pilosula" venom and to those of several other species. In Perth, "M. gratiosa" was responsible for most cases of anaphylaxis due to ant stings, while "M nigriscapa" and "M. ludlowi" were responsible for two cases. The green-head ant ("Rhytidoponera metallica") was the only ant other than "Myrmecia" species to cause anaphylaxis in patients. Dogs are also at risk of death