Gerry Ellis / Green Leaf-mimic Katydid (Steirodon robertsorum) on leaf, Costa Rican highlands

Gerry Ellis / Green Leaf-mimic Katydid (Steirodon robertsorum) on stem, camouflaged amongst leaves, Costa Rica

Daniel Heuclin / Leaf Katytid (Steirodon sp) Montagne de Kaw, French Guiana

Daniel Heuclin / Green Leaf Katytid (Steirodon sp) held in hand, Montagne de Kaw, French Guiana

Daniel Heuclin / Leaf Katytid (Steirodon sp) Montagne de Kaw, French Guiana

Daniel Heuclin / Leaf Katytid (Steirodon sp) Montagne de Kaw, French Guiana Taken in field studio with white background.

Pete Oxford / Katydid (Steirodon sp) mimicking leaf, Iwokrama Rainforest Reserve, Guyana

Piotr Naskrecki / Katydid (Steirodon sp) eggs on underside of leaf, Costa Rica

Pete Oxford / Giant narrow-winged leaf katydid (Steirodon sp) Mindo Cloud Forest, Andes, Ecuador

Pete Oxford / Katydid (Steirodon sp) close-up showing ear on front leg, western slopes of the Andes, Ecuador

Pete Oxford / Katydid (Steirodon sp) on human hand, western slopes of the Andes, Ecuador

Pete Oxford / Katydid (Steirodon sp) on human hand, western slopes of the Andes, Ecuador

Pete Oxford / Katydid (Steirodon sp) portrait on branch, western slopes of the Andes, Ecuador

Norbert Wu / Stal's Katydid (Steirodon stalii) resembles green leaves of plants, Panama

Pete Oxford / Katydid (Steirodon sp) mimicking leaf, Yasuni National Park, Amazon Rainforest, Ecuador