About Cordulegaster diadema Selys, 1868
Cordulegaster diadema, commonly called the Apache spiketail, is a dragonfly species that belongs to the family Cordulegastridae. Mature adult individuals of this species usually measure between 74 and 88 millimeters in total length. Its geographic distribution extends from the southwestern United States through Mexico to Costa Rica. The back of this dragonfly’s head is typically yellow to brown, covered with hairs that range from yellow to black; some individuals have been recorded with a completely black head and white hairs instead. The first proximal segment of the legs is yellow. The thorax has two lateral stripes, with an additional yellow stripe located between these two lateral stripes.
