Hymenoptera-Ants, Bees, Horntails, Wasps
| Apidae Bombus griseocollis Bumblebee | There are many species of bumblebees in western Colorado . Bob Hammon photographed this B. griseocollis flying in to a white foxtail lily at the Mesa County Extension office in 2005. |  |
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| Megachilidae Megchile sp. Leafcutter Bees |   |
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| Sphecidae Chlorion aerarium Cricket Hunter | This beautiful cricket hunter was photographed by Dick Colby in his back yard in Grand Junction. These sphecid wasps are very common in the lower altitudes of western Colorado. They specialize on hunting crickets, as the picture aptly displays. They paralyze their prey, bury it and lay an egg on it. The wasp larva then consumes the cricket. |  |
