It takes a steady hand and great attention to detail to properly preserve insect specimens. Here, a group of Anthophorid bees have been pinned and arranged so we can see the details necessary to identify to species. Anatomical features such as the veins running through the forewing, the rear legs, and the mandibles can all be help identify which of Colorado's 1,000 bees these are.
I am a researcher at CU-Boulder leading a USDA funded project looking at native bee diversity in agricultural landscapes of eastern Colorado. Please enjoy your visit and contact me if you have any questions.