Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


TaxonomyBrowseInfoImagesLinksBooksData
Photo#124454
Thick-headed Fly - Physoconops brachyrhynchus - male

Thick-headed Fly - Physoconops brachyrhynchus - Male
Ozark Mountains, Searcy County, Arkansas, USA
July 4, 2007
Size: 10mm

Images of this individual: tag all
Thick-headed Fly - Physoconops brachyrhynchus - male Thick-headed Fly - Physoconops brachyrhynchus - male

Good exemplar for lateral view diagnostics of P. brachyrhynchus
The dark form of P. brachyrhychus seen here can be easily mis-identified as P. bulbirostris, or as the dark form of P. excisus...especially when only a dorsal view is available (and all the more so if the view is tilted so that the frons is not clearly visible).

But the profile view seen here clearly displays three important characters for verifying P. brachyrhynchus:

1) the entirely white cheeks; 2) the uniform-width white-pollinose pleural stripe...reaching from the lower edge of the pleuron (between the fore- and mid-legs) to the upper-edge of the thorax (just forward of the wing-base); and 3) the proboscis is short.
Both P. bulbirostris and P. excisus have dark markings on their cheeks. And in P. bulbirostris the upper half of the pleural stripe is absent; while in P. excisus the pleural stripe is complete, but the lower half is typically wider than the upper half.

Moved

Moved
Moved from Physoconops.

Moved
Moved from Thick-headed Flies.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.