This species is unusual in that it is only the second species of Camponotus known to have a metapleural gland, the other being the South-east Asian C. gigas. The opening to the gland is large and highly visible, in fact as large as any known in the ants. This is especially noteworthy as none of the other species examined here show any indication of a metapleural gland being present. Also, thadeus is morphologically distinct from gigas, sharing few characters with it and with little indication that they are closely related. It is therefore highly likely that this gland has reappeared independently in these two taxa.
The following observations were made by Angela Shuetrim (pers. comm.) while collecting the type series on Mt. Finnigan, Queensland: "These ants are arboreal based on the nest I found. Nests are very difficult to locate but I was lucky enough to find one in a hollow cavity in a tree. The locality was in rainforest at high elevation, the lowest elevation where I found them being approximately 880m, and I never came across them in lowland rainforest areas. The vegetation changes frequently as you walk up the mountain and when you get to the right spot, and weather conditions are good, they can be found in high numbers running up trees along trails, and scattered across the rainforest floor."
Lateral view of propodeum showing propodeal spiracle and metapleural gland opening