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For Insects, Spiders & Their Kin
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Nerax group

Phylum Arthropoda - Arthropods
Subphylum Hexapoda - Hexapods
Class Insecta - Insects
Order Diptera - Flies
No Taxon Orthorrhapha
Superfamily Asiloidea
Family Asilidae - Robber Flies
Subfamily Asilinae
Genus Efferia
No Taxon Nerax group

Species aestuans - Efferia aestuans
Species apicalis - Efferia apicalis
Species prairiensis - Efferia prairiensis
Species slossonae - Efferia slossonae
Species tabescens - Efferia tabescens