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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Acalyptratae" » Sciomyzoidea » Thick-headed Flies (Conopidae) » Conopinae » Physocephala » Physocephala tibialis
Photo#274768
Thick-Headed Fly - Physocephala tibialis - male
Copyright © 2009 Robert Lord Zimlich

Thick-Headed Fly - Physocephala tibialis - Male
Mobile (Dog River), Mobile County, Alabama, USA
May 11, 2009
Physocephala tibialis? Anybody know how to sex?

Images of this individual: tag all
Thick-Headed Fly - Physocephala tibialis - male Thick-Headed Fly - Physocephala tibialis - male
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Contributed by Robert Lord Zimlich on 12 May, 2009 - 1:57pm
Last updated 21 August, 2016 - 10:43pm

Robert, you asked about how to determine sex of conopids?
Females have a "theca"...see the comments under the post below for lots of details:

 
… Aaron Schusteff, 21 August, 2016 - 6:47pm login or register to post comments

Moved
Moved from Physocephala.
… Aaron Schusteff, 28 December, 2013 - 3:20am login or register to post comments

Yep...tibialis, and it's a male
Classic gestalt of tibialis...and has the technical characters to separate it from similar looking species (e.g. uniformly black cheek, black scutellum, dark discal cell).

This is a male because it lacks the conspicuous bulge below the 5th sternite (the "theca" of the female).
… Aaron Schusteff, 28 December, 2013 - 3:10am login or register to post comments

Moved
Moved from Flies.
… Keith Bayless, 9 July, 2009 - 5:46pm login or register to post comments

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