Doodlebug

The Doodlebug is a subterranean species of Flint Beetle from the "Flint Bug" type. They're first discovered around the same time as the Glint Beetle.

Description
Doodlebugs are similar in appearance to Glint Beetles and previous ancestors of the Iridescent Flint Beetle. Their shells are brown in color, often covered in dust and dirt for camouflage. Their underbellies and legs are green, along with their stalked eyes.

Doodlebugs are the only "harmful" Flint Beetle species, as individuals are seen releasing a toxic cloud from their abdomens in the form of flatulence. These poisonous clouds contain a mixture of methane and hydrogen sulfide, making the substance a grade XIII biohazard.

Doodlebug Flies
Very small, insect-like creatures are often seem in the presence of a Doodlebug. These creatures are extremely small, similar size to the Ujadani, and are green with light-green stripes.

They are one of the few creatures who're immune to the poisonous clouds, and are the ONLY ones that seemingly benefit from it as they never leave the Doodlebug when releases of this toxic cloud occur.