Zygonopus whitei Trichopetalum whitei, common name Luray Caverns blind cave millipede, is a rare troglobitic (obligate cavernicolous) millipede of the upper Potomac River drainage in four Virginia counties and three West Virginia counties.

Feeding is presumed to consist of picking up or scraping material from the substrate with the mouthparts then grinding with the mandibles.

The species is recorded from caves in the upper Potomac River drainage in Virginia (Augusta, Page, Rockingham, and Shenandoah Counties) and West Virginia (Hardy, Grant, and Pendleton Counties).

However, if another cave millipede, T. weyeriensis, intergrades with T. whitei in Pendleton County and these two species are synonymous (as some workers believe), then the range of T. whitei would also extend into Greenbrier, Monroe and Pocahontas Counties in West Virginia.

The secretions from the coxal sacs then form the seminal fluid into a spermatophore which is then transferred to the cyphopods of the female during mating.