violet dropwing trithemis annulata on a branch

violet dropwing female violetmarked darter dragonfly trithemis annulata insect entomology arthropod invertebrate animal animals arthropods biodiversity branch close closeup color colour dragonflies dropwings eyes fauna insects invertebrates langue barbarie macro national park natural nature perch perched plumcoloured purpleblushed saintlouis senegal vertical wild wildlife zoology darters annulata park river saint-louis