Velvet ants live on every continent except Antarctica, with the highest concentrations in warm, dry regions with sandy or loose soil. The family Mutillidae includes roughly 8,000 species across about 230 genera, and while they thrive in deserts and arid grasslands, you can find them in habitats ranging from tropical forests to temperate meadows.
Global Range
Velvet ants are found across North America, South America, Europe, Africa, Asia, and Australia. Tropical and subtropical regions of East Asia alone harbor enormous, still largely undiscovered diversity. Continental Southeast Asia remains less studied than Northeast Asia and the Pacific Islands, meaning the true count of species in that region is likely much higher than current records suggest.
Despite their global presence, velvet ants are most diverse and abundant in arid and semi-arid climates. Their diversity follows a latitudinal gradient: the closer you get to the tropics and warm desert belts, the more species you’ll encounter. Higher latitudes and colder climates support fewer species overall.
North America’s Diversity Hotspot
The southwestern United States and northern Mexico are the epicenter of velvet ant diversity in North America. The Madrean Archipelago region of southern Arizona and New Mexico supports more velvet ant species than the entire eastern United States combined. Several genera have diversified extensively in these arid lands, making the desert Southwest a global hotspot for the family.
Within southern California, the hot deserts (the Colorado and Mojave) house a much more diverse velvet ant fauna than the cold Great Basin Desert to the north. Two factors drive this richness: the variety of ground-nesting bees and wasps that serve as hosts, and the heterogeneous desert landscapes that create many distinct microhabitats. Sand dunes, rocky washes, scrubby flats, and canyon edges each support different communities of hosts, and where hosts go, velvet ants follow.
East of the Rockies, velvet ants are less diverse but still common. The eastern velvet ant, sometimes called the “cow killer,” is the largest and most brightly colored species in states like Missouri and Virginia. It ranges across open fields, pastures, meadows, and forest edges throughout much of the eastern and southern United States.
Habitat Preferences
Regardless of region, velvet ants favor sunny, warm, dry areas with bare or sandy soil. These conditions aren’t random preferences. Velvet ants are parasites of ground-nesting bees and wasps, and those hosts dig their nests in exactly these kinds of loose, well-drained soils. Open fields, shortgrass prairies, sandy roadsides, and pastures are all prime territory.
In Virginia, for example, you’ll spot them near bare or sandy patches in open fields where their hosts nest, or visiting flowers to feed on pollen and nectar as adults. In Colorado, they tend to occur in lower-elevation shortgrass prairie on both the eastern and western slopes, and one or more species can be found in most areas of the state except the highest elevations. They generally avoid dense forests, wet marshlands, and alpine zones.
Why Host Nests Dictate Location
Understanding where velvet ants live means understanding how they reproduce. Female velvet ants don’t build their own nests. Instead, they search for the underground burrows of ground-nesting bees and wasps, force their way inside, and lay eggs in the host’s brood cells. The velvet ant larva then consumes the host’s larvae, pupae, or cocoons as it develops.
This lifestyle means velvet ants can only survive where suitable hosts are nesting. The eastern velvet ant parasitizes bumble bee nests. Other species target cicada killer wasps or various solitary bee species. A female velvet ant has to locate a well-concealed burrow of the correct host species and then get inside the tunnel without being stung or driven away by the defensive mother wasp or bee that dug it. She may remain inside the nest for several days.
This host dependency explains the tight connection between velvet ant diversity and host diversity. Deserts with many species of ground-nesting bees and wasps naturally support many species of velvet ants. Areas with few ground-nesters, like dense forests with heavy leaf litter or waterlogged soils, have few or no velvet ants.
Where You’re Most Likely to See One
If you’re in the United States, your best chance of spotting a velvet ant is in a sunny, open area with sandy or dry soil during warm months. Pastures, meadows, dirt paths, and the edges of fields are all common spots. In the desert Southwest, they’re practically everywhere during summer. In eastern states, look along sandy roadsides, in unmowed fields, or near patches of bare ground where you might also notice small holes from ground-nesting bees.
The females are the ones you’ll notice. They’re wingless, covered in dense, brightly colored hair (often red, orange, or white on black), and move quickly across the ground searching for host nests. Males have wings and look more like typical wasps, so they’re often overlooked. Both sexes visit flowers as adults to feed on nectar, so blooming wildflower patches in open areas can be good places to watch for them.