1. an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. The invertebrates constitute an artificial division of the animal kingdom, comprising 95 percent of animal species and about 30 different phyla.
Tiger-Striped Longwing and Planet Earth 10" x 12" Oil on Wood The Tiger-Striped Longwing (Heliconius ismenius). These butterflies roam from Southern Mexico all the way to Ecuador and Venezuela. To protect themselves from predators, they, along with several other species of the same genus, have evolved an amazing adaptation to advertise their toxicity if eaten. Known to biologists as Müllerian mimicry, all of these butterflies have “tiger” stripes on their wings to let [...]