a robber fly in the genus efferia in natural habitat among dried grass in colorado

efferia native species adult insect animal behavior arthropod biodiversity biological diversity close colorado colorful desert dry vegetation ecological ecosystem entomology environment environmental awareness fauna food chain foraging ground level habitat protection anatomy study invertebrate life cycle macro mating natural selection nature enthusiast observation organic outdoor exploration patterns plant interaction predator predatory fly prey robber sand small creature survival textures wildlife genus dried grass perched sticks