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

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

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowseInfoImagesLinksBooksData
Photo#907987
Bumblebee mimic fly - Criorhina nigriventris

Bumblebee mimic fly - Criorhina nigriventris
Savage River State Forest Bear Pen Wildlands, Garrett County, Maryland, USA
April 10, 2014
Insect was crawling up out of the leaf litter and onto the moss-covered base of a streamside tree. It was black and gold and resembled a small bumble bee, but seemed to not have wings. Once in a jar for further identification, I could see it had tiny wrinkled stubs where the wings should be. These actually were the compressed wings and eventually they inflated and appeared normal. We could then tell it was a fly and a friend suggested possibly a type of spring Syrphid. I've looked through your archives and nothing quite matches.

Images of this individual: tag all
Bumblebee mimic fly - Criorhina nigriventris Bumblebee mimic fly - Criorhina nigriventris Bumblebee mimic fly - Criorhina nigriventris Bumblebee mimic fly - Criorhina nigriventris Bumblebee mimic fly - Criorhina nigriventris Bumblebee mimic fly - Criorhina nigriventris

Moved
Moved from Criorhina.

Moved
Moved from Milesiini.

 
Keying it out using Curran's
Keying it out using Curran's key (Curran, C.H. 1925b. Contribution to a monograph of the American Syrphidae from north of Mexico. Kansas University Science Bulletin, 15: 7-216).

(1) Mystax/tuft of hairs above oral cavity wanting
(4) Can't see the anterior ocellus but this is neither tricolor nor nigripes
(9) Fourth abdominal segment not yellow
(10) Postalar calli yellow, not black
(11) Abdomen is wholly black pilose beyond second segment
(12) Thorax is yellow pilose with some black, middle of second abdominal segment roughly bare

so Criorhina nigriventis. Going to make a species page now.

Moved
Moved from ID Request.

Yes, a syrphid - either Brachypalpus (Crioprora) or Criorhina. I'm leaning towards the former, but am not 100% certain (the main character to distinguish them is hard to tell from photos and I can't quite see the facial difference).

Nice photos, and great observation!

 
fbpope's sent me an image sho
fbpope's sent me an image showing the metasternum - it is haired and so this is Criorhina.

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