close-up of the head of a stick insect

stick insect head stickbug mimetic entomology walking antennas phasmid camouflage animal animals arthropod arthropods biodiversity bug sticks close closeup color colour eye eyes fauna ghost insects invertebrate invertebrates langue barbarie macro mimesis mimic natural nature phasmatodean phasmatodeans phasmids saintlouis senegal stickbugs vertical wild wildlife zoology antennae close-up insect national park saint-louis