Euparagiinae
Ashmead, 1902
Genus Guides
1Euparagiinae is a rare of in the Vespidae, containing a single extant Euparagiia. Once in distribution dating back to the Early Cretaceous, the group is now geographically relict, restricted to desert regions of the southwestern United States and northwestern Mexico. The subfamily is the sister group to all other Vespidae and possesses distinctive wing venation not found elsewhere in the family.
Pronunciation
How to pronounce Euparagiinae: /juːˌpærəˈdʒaɪɪniː/
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Identification
Euparagiinae can be distinguished from other Vespidae by unique wing venation that differs from all other members of the . A single small pale spot at the edge of the is characteristic. Males exhibit -specific modifications to the and of the front legs.
Images
Habitat
Desert regions. Extinct are known from varied paleoenvironments including Russian, Kazakh, Mongolian, Botswanan, and Burmese deposits.
Distribution
Extant restricted to desert regions of the southwestern United States and northwestern Mexico. Fossil record indicates former distribution across Laurasia and Gondwana during the Cretaceous, with specimens from Russia, Kazakhstan, Mongolia, Botswana, and Myanmar.
Host Associations
- weevil larvae - preyFemales of Euparagia scutellaris provision soil nests with weevil larvae (Curculionidae). No other relationships are documented.
Life Cycle
Nests are constructed in soil. Only the of Euparagia scutellaris has been described.
Similar Taxa
- Masarinae (pollen wasps)Historically grouped together with Euparagiinae as the 'Masaridae', but now recognized as distinct . Euparagiinae differs in wing venation, mesonotal spot, and male leg modifications.
- Other VespidaeEuparagiinae is sister to all remaining Vespidae and distinguished by unique wing venation not shared with other .
More Details
Fossil record
The includes two extinct : Curiosivespa (7 , Early-Late Cretaceous of Russia, Kazakhstan, Mongolia, Botswana, Myanmar) and Priorparagia (1 species, Late Cretaceous of Botswana). The oldest records date to the Aptian (Early Cretaceous), approximately 125-113 million years ago.
Taxonomic history
Previously treated as part of 'Masaridae' together with pollen wasps (Masarinae), Euparagiinae is now recognized as an independent and the sister group to all other Vespidae based on morphological and molecular evidence.
Biological knowledge gaps
The of only one extant , Euparagia scutellaris, has been documented. The nesting , prey associations, and of the remaining ten described species remain unknown.