File:Bombus Mystery, back end, roulson, va 2018-08-28-16.00 (44332304351).jpg

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Description And now we present a mystery. Here is a bumble bee collected in northern Virginia in a blue vane trap as part of T'ai Roulston's research group looking at bee populations in restored fields. The question at hand is what species is it? Its a clean, unworn bee, appears to be the size of large worker or perhaps a small queen and it fits some characteristics of B. affinis (endangered species!..) and on the other hand it fits some characters of B. rufocinctus (no validated records for MD, VA, WV, or NC...a recently validated record from NW PA). Things to note...Face has all black hairs (B. rufocintus usually has yellow hairs at the top of the head), ocelli are clearly recessed below the tops of the compound eyes (characteristic or queen B. rufocinctus, but I think not for B. affinis), Has characteristic hair pattern on top of abdomen for B. affinis ...except that there are extensive, and symmetrical patches of black hairs on the lateral sides...somethings that I have never seen in B. affinis (B. rufocintus is extremely variable in hair, but perusal online shows no hair patterns exactly like this one...usually there is much more extensive amounts of light colored hair throughout the abdomen. OK, your turn...what do you think it is and why?
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Source Bombus Mystery, back end, roulson, va_2018-08-28-16.00
Author USGS Bee Inventory and Monitoring Lab from Beltsville, Maryland, USA

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Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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This image was originally posted to Flickr by Sam Droege at https://flickr.com/photos/54563451@N08/44332304351 (archive). It was reviewed on 25 December 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark.

25 December 2018

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current08:39, 25 December 2018Thumbnail for version as of 08:39, 25 December 20185,083 × 3,840 (14.89 MB)Butko (talk | contribs)Transferred from Flickr via #flickr2commons

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