This is a highly variable species as regards its overall color and the color of the connexivum, the appearance of the integument on head and thorax, the degree of development of the humeral angles, the shape of the anterolateral projection of the pronotum, the number of long setae of the mid and hind femora, the time of development from egg to adult, and even biochemical characters (Lent & Wygodzinsky 1979).
Holotype deposited at MACN (Museo Argentino de Ciencias Naturales "Bernardino Rivadavia”, Buenos Aires, Argentina (Bachmann 1999); allotype of T. ninoi deposited at the Museo de La Plata (Coscaron et al. 2015).

This is basically a sylvatic species, but also found in peridomestic situations (corrals and chicken houses), and ocassionally attracted to light. Sylvatic specimens have been found amojng rocks and in stone walls, near resting places of rodents and edentates (Lent & Wygodzinsky 1979).