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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » Orthorrhapha » Asiloidea » Robber Flies (Asilidae) » Asilinae » Triorla » Triorla interrupta
Photo#734447
Efferia - Triorla interrupta - female
Copyright © 2013 Donald R Riley

Efferia - Triorla interrupta - Female
Katy, Harris County, Texas, USA
September 10, 2012
Efferia or Triorla, not sure how to separate the two. Lots of Efferia but hopeing somebody can give me a species ID. Thanks
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Contributed by Donald R Riley on 1 January, 2013 - 4:53pm
Last updated 7 January, 2013 - 5:23pm

Moved
Moved from Robber Flies.
… John F. Carr, 7 January, 2013 - 5:23pm login or register to post comments

Moved
Moved from ID Request.
… v belov, 1 January, 2013 - 4:59pm login or register to post comments

 
This is [i]Triorla interrupta
This is Triorla interrupta (a female). The single U.S. sp. of Triorla has this consistent gray and black-banded pattern on the abdomen. The very large genus Efferia, with many U.S. spp., has a variety of abdominal patterns (though some are very similar to this one). Triorla females have a rather tapered, conical-shaped ovipositor (somewhat circular in cross section), while Efferia females have elongate, paralel-sided ovipositors which are quite flat in cross section (shaped like a sword). Triorla males have small, slightly angled genitalia, whereas Efferia males have large, hammer-shaped genitalia which are strongly angled to the axis of the abdomen.
… Eric Fisher, 1 January, 2013 - 7:28pm login or register to post comments

 
Thanks, this should make it e
Thanks, this should make it easy to seperate these two.
… Donald R Riley, 2 January, 2013 - 9:24am login or register to post comments

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