All these were collected molting in my back yard during August and September, 2006. Large numbers of T. davisi molt here, especially in September, and I can collect up to 15 a night. I am sure they are all T. davisi because of their small size, around 40 mm, and their large curved 'hammerhead'. I do not see this degree of variation in other Tibicen species in this area. T. davisi varies from all brown to mostly green and the black mid-ventral abdominal stripe can be prominent to entirely lacking. The individuals in the picture are all alive, but chilled in my refrigerator to immobilize them for photography. They are photographed on millimeter graph paper.