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Hammertails
Efferia
Efferia is an insect genus of mainly neotropical and nearctic Diptera in the family Asilidae or robber flies. It is one of the most species-rich genera of Asilidae, with particularly high diversity in arid or semi-arid ecosystems of the New World.
60 branches of this genus, most-observed first
Northeastern Hammertail
speciesEfferia aestuans
Sand Hammertail
speciesEfferia albibarbis
Southeastern Hammertail
speciesEfferia apicalis
Sagebrush Hammertail
speciesEfferia benedicti
Yellow-bearded Hammertail
speciesEfferia pogonias
Yellow-haired Hammertail
speciesEfferia rapax
Sesqui Hammertail
speciesEfferia tabescens
Pine-trunk Hammertail
speciesEfferia femorata
Triton Hammertail
speciesEfferia triton
Woodland Hammertail
speciesEfferia nemoralis
Silver Hammertail
speciesEfferia tricella
Okanagan Hammertail
speciesEfferia okanagana
Golden Hammertail
speciesEfferia auripila
Texas Hammertail
speciesEfferia texana
Harvey Hammertail
speciesEfferia harveyi
Yellow Hammertail
speciesEfferia plena
Scrub Hammertail
speciesEfferia slossonae
Thorny Hammertail
speciesEfferia tuberculata
Efferia nigrimystacea
speciesEfferia nigrimystacea
Tucson Hammertail
speciesEfferia subarida
Snow Hammertail
speciesEfferia snowi
Straw-faced Hammertail
speciesEfferia staminea
Madera Canyon Hammertail
speciesEfferia bryanti
Helen Hammertail
speciesEfferia helenae
Efferia bimaculata
speciesEfferia bimaculata
Arizona Club-legged Hammertail
speciesEfferia tagax
Great Mesquite Hammertail
speciesEfferia grandis
Prairie Hammertail
speciesEfferia prairiensis
Luna Hammertail
speciesEfferia luna
White Thorny Hammertail
speciesEfferia producta
Columbia River Hammertail
speciesEfferia frewingi
Northwestern Hammertail
speciesEfferia coulei
Reddish Thorny Hammertail
speciesEfferia tucsoni
Efferia quadrimaculata
speciesEfferia quadrimaculata
Nevada Hammertail
speciesEfferia basingeri
Hairy Thorny Hammertail
speciesEfferia setigera
Lesser Mesquite Hammertail
speciesEfferia bicolor
Colorado Hammertail
speciesEfferia varipes
Peralta Hammertail
speciesEfferia peralta
Ocotillo Hammertail
speciesEfferia neosimilis
Sierritas Hammertail
speciesEfferia canella
Broad-tipped Hammertail
speciesEfferia inflata
Williston Hammertail
speciesEfferia willistoni
Silver-faced Hammertail
speciesEfferia argentifrons
Great Plains Hammertail
speciesEfferia bicaudata
Crested Hammertail
speciesEfferia costalis
Maned Hammertail
speciesEfferia jubata
Banded Hammertail
speciesEfferia zonata
Juniper Hammertail
speciesEfferia incognita
Kondratieff Hammertail
speciesEfferia kondratieffi
Mountain Hammertail
speciesEfferia vertebrata
Rio Grande Hammertail
speciesEfferia completa
Davis Hammertail
speciesEfferia davisi
Golden Club-legged Hammertail
speciesEfferia armata
Portal Hammertail
speciesEfferia mortensoni
Efferia remus
speciesEfferia remus
Efferia stylata
speciesEfferia stylata
Wilcox Hammertail
speciesEfferia wilcoxi
Laredo Hammertail
speciesEfferia prattii
Red-legged Hammertail
speciesEfferia cuervana
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Efferia in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 61610.