Pompilidae is a cosmopolitan but predominantly tropical family, containing over 5,000 species. Pompilids are normally black, sometimes iridescent blue or green, and often exhibit integumental markings of brighter colors. This family is known as the spider wasps because each larva typically develops in a nest cell on a single (paralyzed) spider host. Most species are solitary, although several mud-nesting species are communal. The nest are made in preexisting cavities, are dug in the soil, or made of mud or masticated leaf material. The larvae of some species develop as ectoparasites of active spiders. Some species are cleptoparasitic on other spider wasps.
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Maurillus australis Smith - Female