About Aphantaulax trifasciata (O.Pickard-Cambridge, 1872)
Aphantaulax trifasciata shows clear sexual size dimorphism: adult females reach a body length of 6–10 millimetres (0.24–0.39 inches), while adult males reach 4–7 millimetres (0.16–0.28 inches). The body of this species is oblong-oval, narrow and pointed at the posterior end. Its base body color is black, marked with distinct light patterning: a broad transverse band of white hairs along the front margin of the abdomen, a second interrupted transverse band of white hairs across the middle of the abdomen, and a longitudinal white stripe on the cephalothorax. Two small white spots sometimes occur at the tip of the abdomen. The legs are yellow-brown. This species occurs across the Palearctic realm, but is not found in Central Europe, Britain, or Scandinavia. Individuals live under rocks and fallen leaves, most commonly on sea coasts or riverbanks, and typically hunt at night.
