I found a couple of these cool creatures while driving at night on little-used Mojave Desert roads. It was the first time I’ve encountered these rather bizarre looking insects.
Ovate Shieldbacks are related to crickets and grasshoppers. They have a prominent plate-like structure called a pronotum that covers part of their body that resembles a shield. They are a mottled brown, blending in with dead grasses and the desert floor.
Shieldback Katydids are the linebackers of the katydid world, with robust bodies and a fierce looking demeanor (they may look mean, but like most katydids, they are harmless when handled). An extremely diverse group, there are 123 species of Shieldback Katydids in North America – nearly all are western in distribution.
These are usually the first katydids to emerge as adults. Males can be heard singing as early as mid-to-late June in weedy fields and brushy woodland understories.
Females have a long curved ovipositor protruding from the abdomen. It is not a stinger, though it looks like one. Ovipositors are used to deposit fertilized eggs deep into the soil.
Unlike their vegetarian relatives, Shieldback Katydids are scavengers on dead insects and are active predators of other insects. They do eat plants too, though.
These were a super cool find on my Las Vegas Area adventure.