About Colossopus grandidieri Saussure, 1899
This section describes key biological traits of Colossopus grandidieri Saussure, 1899. Its pale brown, cigar-shaped eggs are laid singly in soil, measuring only 6 mm at laying. The eggs swell in size as they develop, with a development period of three months to one year. Over a lifetime, females lay between 150 and 200 eggs. Adult males and females have similar overall coloration, differing only in the color of the labrum, or upper lip: the labrum is orange-red in females and yellow-orange in males. When confronted by a disturbance, adults assume a defensive posture: they rear up on their hind legs, spread their forelegs, and open their mandibles. In this posture, adult males produce a shrill noise, while adult females make no sound. If the disturbing organism moves closer, C. grandidieri attempts to grab it with its forelegs and bite it with its jaws.
