Efferia mortensoni
Wilcox, 1966
Portal Hammertail
Efferia mortensoni is a of robber fly in the Asilidae, described by Wilcox in 1966. It is known by the "Portal Hammertail." Like other members of the Efferia, this species is a predatory dipteran that likely hunts other insects. The species name suggests a connection to the Portal area in southeastern Arizona, a region well-known among entomologists for its exceptional biodiversity. Robber flies in this genus are typically active during daylight hours and are often observed perching on vegetation or the ground while hunting.
Pronunciation
How to pronounce Efferia mortensoni: /ɛˈfɛriə mɔrˈtɛnsoʊni/
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Distribution
The name "Portal Hammertail" and its association with the Efferia suggest this species occurs in the southwestern United States, specifically in the vicinity of Portal, Arizona in the Chiricahua Mountains of southeastern Arizona. This region is a well-known biodiversity hotspot for insects, particularly for robber flies and other arthropods.
Diet
Behavior
Robber flies in the Efferia are known to be sit-and-wait , perching on vegetation, rocks, or bare ground to ambush passing prey. They are active hunters with excellent vision and rapid capabilities. Males of some Efferia are known to engage in , flying to elevated points in the landscape to locate mates.
Ecological Role
As a predatory insect, Efferia mortensoni likely contributes to of other insect in its . Robber flies are that can influence structure of flying insects.