Arkansas-delta
Guides
Apheloria virginiensis reducta
Yellow-and-black millipede, Cyanide millipede
A large, colorful millipede in the family Xystodesmidae, distinguished by its black body with bright yellow or orange wedge-shaped posterolateral markings. Like other members of its genus, it produces hydrogen cyanide as a chemical defense, advertised by its conspicuous aposematic coloration. The subspecies represents a western population of A. virginiensis, with records extending from the Appalachian region through the Ozark Plateau to the Arkansas Delta.