ENPO120628_D016 Published December 13, 2012 at 1429 × 949 in Best of Prairie Ecologist Photos – 2012 Katydid nymph on prairie gentian. Katydid nymph on prairie gentian (Eustoma grandiflorum), an annual wet prairie plant, blooming in abundance at TNC’s Studnicka tract, along the Central Platte River in Nebraska.