Sphaeropthalma

Blake, 1871

velvet ants

Species Guides

24

Sphaeropthalma is a of velvet ants (Mutillidae) described by C.A. Blake in 1871. in this genus are among the smaller velvet ants and exhibit notable diversity in coloration, including red, pink, white, and black hair. The genus is distinguished by a high proportion of species, with pink-haired species being exclusively nocturnal. Sphaeropthalma species are solitary that parasitize nests of solitary wasps, particularly bembicine wasps such as sand wasps and horse guard wasps. The genus has been subject to phylogeographic research revealing cryptic .

Sphaeropthalma unicolor by (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda. Used under a CC-BY license.Sphaeropthalma edwardsii by (c) Amy, some rights reserved (CC BY), uploaded by Amy. Used under a CC-BY license.Sphaeropthalma difficilis by (c) Elliott Gordon, some rights reserved (CC BY), uploaded by Elliott Gordon. Used under a CC-BY license.

Pronunciation

How to pronounce Sphaeropthalma: /sfɛəroʊpˈθælmə/

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Identification

Sphaeropthalma are among the smaller velvet ants in the Mutillidae. Many species possess red hair, though some exhibit pink, white, or black coloration. Pink-haired species are reliably , which may aid in field identification. The lacks the extreme size variation seen in some other mutillid genera. Species-level identification typically requires examination of punctation patterns and other fine morphological details.

Images

Habitat

Dry areas and open areas. show to arid environments, with some lineages specifically arid-adapted and others Mediterranean-adapted.

Distribution

Western North America, with occurring from southern California through desert and Mediterranean climate regions. The S. arota and S. unicolor species complex have been studied for their biogeographic patterns across western Nearctic regions.

Host Associations

Behavior

Females scurry along the ground searching for solitary nests to parasitize. S. pensylvanica exhibits phoretic copulation, in which males physically transport females by and/or foot from their initial site of contact before mating. This was the first recorded instance in the Sphaeropthalminae. Many are , with activity recorded in some species.

Ecological Role

of solitary . Serves as for other parasitoids including cuckoo wasps (Chrysididae).

Similar Taxa

Sources and further reading