Eastern Hammertail Efferia aestuans (Linnaeus, 1763)    
Kingdom Animalia   >   Phylum Arthropoda   >   Class Insecta   >   Order Diptera   >   Family Asilidae   >   Genus Efferia   

Status:

Can be very common in open habitats. This species lands on whatever surface is convenient, and may even land on observers. The genus Efferia s.l. is quite speciose, and some dipterists split it up into a number of smaller genera. Following that classification, this species would be placed in Nerax.

Description:

Female has long, distinctive ovipositor.

There are 31 records in the project database.

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An Eastern Hammertail in Montgomery Co., Maryland (07/21/2017). Photo by Steve Scholnick. (MBP list)

A male Eastern Hammertail near Loch Raven Reservoir, Baltimore Co., Maryland (8/28/2007). Photo by Steve Collins. (MBP list)

A female Eastern Hammertail in Baltimore City, Maryland (6/6/2007). Determined by Herschel Raney/BugGuide. Photo by Thomas Wilson. (MBP list)

An Eastern Hammertail in Harford Co., Maryland (8/16/2013). Photo by Mark Johnson. (MBP list)

A male Eastern Hammertail in Caroline Co., Maryland (7/15/2020). Determined by Chris Cohen and Ken Wolgemuth/BugGuide. Photo by Dave Webb. (MBP list)

An Eastern Hammertail in Montgomery Co., Maryland (8/28/2017). Photo by Steve Scholnick. (MBP list)

An Eastern Hammertail in Baltimore Co., Maryland (8/1/2020). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

A female Eastern Hammertail with prey in Anne Arundel Co., Maryland (8/26/2017). Verified by Steve Collins. Photo by Bill Hubick. (MBP list)

A female Eastern Hammertail in Dorchester Co., Maryland (9/1/2017). Determined by Bob Biagi/BugGuide. Photo by Mark Etheridge. (MBP list)

An Eastern Hammertail in Baltimore Co., Maryland (7/1/2020). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

A female Eastern Hammertail in Anne Arundel Co., Maryland (9/11/2014). Photo by Bill Hubick. (MBP list)

A female Eastern Hammertail in Anne Arundel Co., Maryland (9/11/2014). Photo by Bill Hubick. (MBP list)

A female Eastern Hammertail in Anne Arundel Co., Maryland (9/11/2014). Determined by Steve Collins. Photo by Bill Hubick. (MBP list)

An Eastern Hammertail in Baltimore Co., Maryland (8/17/2020). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

An Eastern Hammertail in Howard Co., Maryland (9/12/2014). Photo by Kurt Schwarz. (MBP list)

An Eastern Hammertail feeding on prey in Harford Co., Maryland (7/28/2010). Photo by Bill Adams. (MBP list)

A female Eastern Hammertail with prey in Baltimore City, Maryland (9/10/2008). Determined by Herschel Raney/BugGuide who notes, E. aestuans "love cloth and pants and shirts." Photo by Thomas Wilson. (MBP list)

An Eastern Hammertail in Howard Co., Maryland (9/12/2014). Photo by Kurt Schwarz. (MBP list)

An Eastern Hammertail in Montgomery Co., Maryland (7/11/2017). Determined by Ben Coulter. Photo by Esther Smith. (MBP list)

A female Eastern Hammertail in Dorchester Co., Maryland (8/8/2019). Determined b Bob Biagi/BugGuide. Photo by Mark Etheridge. (MBP list)


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