Life (root) » Animalia (Animals) » Arthropoda (Arthropods) » Hexapoda (Hexapods) » Insecta (Insects) » Pterygota » Orthoptera (Grasshoppers, Crickets, Katydids) » Ensifera » Gryllidea (Crickets) » Grylloidea » Gryllidae (True Crickets) » Oecanthinae (Tree Crickets) » Oecanthini » Oecanthus (Common Tree Crickets) » Oecanthus nigricornis » Oecanthus celerinictus (Fast-calling Tree Cricket)