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Velvet Ant

Dasymutilla occidentalis

Photo by KarenL
Published on Project Noah
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35.8987, -86.9624

Field Notes

Description:

These insects are wasps, not ants. Females are wingless and covered with dense hair, superficially resembling ants. The red velvet-ant is the largest velvet-ant species, reaching about 3/4 inch in length. They are black overall with patches of dense orange-red hair on the thorax and abdomen. Males are similar but have wings and can not sting.

Females seek the immature stages of ground-nesting bees, digging to the nesting chambers and eating a hole through the cocoon. She deposits and egg on the host larva, which soon hatches into a white legless grub. The immature velvet-ant eats the host larva, developing through several larval stages before forming a pupa.

Habitat:

Lone females can be found crawling on the ground, particularly in open sandy areas. Adults are most common during the warm summer months. Larvae are solitary, external parasites of developing bumble bees.

Notes:

Also known as Cow Killer

Species ID Suggestions

Comments (8)

I believe they are solitary dazynay, though we see them regularly in the summer here. They seem to be non aggressive though the sting is apparently very painful.
We have them here in SC too, but rarely do you ever see them. If you hold it down with a stick it makes an audible screech. I have never spotted more than one at a time and have never found a nest.
Thanks Nann! We have all sorts of biting & stinging critters here in Tennessee so I've kind of got used it. Luckily I've not been stung by one of these guys... yet!
Saw and recorded my first one last summer. He was screaming! Scary! On the run! You have a much better photo!
So I have heard, but they don't seem to be aggressive - several times I have had one wander across my foot while I have been wearing flip-flops but luckily I haven't been stung!
beautiful but not to be trifled with they have a very, very painful sting

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