Sitalcina borregoensis is a species of armoured harvestman in the family Phalangodidae. It is found in North America.
References
Ubick, Darrell, and Thomas S. Briggs (1989). "The harvestman family Phalangodidae. 1. The new genus Calicina, with notes on Sitalcina (Opiliones: Laniatores)". Proceedings of the California Academy of Sciences, vol. 46, no. 4, 95-136.