Anthophoridae Triepeolus sp. Delta Co. Anthophora spp. Several species of these bees were colected. A ground nesting site was located at the Fruita Research Center. A few specimens were collected at alfalfa flowers.
Some species are bumblebee mimicks.
A single specimen of this large black carpenter bee was captured in Grand Junction. They are rare in western Colorado. These bees specialize on squash flowers. They were found in Kabocha squash flowers, and nesting in soin in Delta County Melissoides sp. These were found nesting in soil, as well as at several species of flowers in Delta and Mesa Counties.