close-up of a hairy robber fly perched on the trunk of a tree against a blue sky. the compound eyes are clearly

animal insect robber fly invertebrate macro predator wildlife bug wild arthropod detail nature diptera asilinae carnivore photography horizontal discovery backyard hymenoptera assassin entomology creature scary science thief eyes metamorphosis people pale wing color image female isolated large legs species texture spines small proboscis outdoors lepidoptera closeup beauty antenna themes background close-up hairy efferia deserti perched trunk tree against blue sky compound are clearly visible italy sky