Wildlife Spotting

Legs, abdomen, and last section of thorax are light brown, thorax and head are dark green; yellow antennae, and a yellow stripe behind the head and another through the midsection of thorax, another yellow stripe rounding below the eyes (pic #2). This picture is part of a series of sightings in the Ecuadorian Amazon region of grasshoppers, that to my eyes shared some similar features: between 2-2.5cm body length with long back legs, large eyes, and underdeveloped wings; in some animals these were just small flaps or completely absent. I don't think they're nymphs, though. I can't find information on these, apart from a few pictures tagged Eulampiacris as the genus. I hope someone is able to provide more information.