A synoptic review of the ants of California (Hymenoptera: Formicidae). Author Ward, P. S. text Zootaxa 2005 936 1 68 http://antbase.org/ants/publications/21008/21008.pdf journal article 21008 Genus Pseudomyrmex Lund Ants in this predominantly Neotropical genus nest in hollow dead twigs and other preformed plant cavities. Two species occur in California: P.apache Creighton is widespread at middle and low elevations within the California floristic province, often nesting in branches of manzanita ( Arctostaphylos ), while P. pallidus (F. Smith) is confined to southern California. Species identification: Ward (1985b). Additional references: Creighton (1953b, 1954), Peters (1997), Starks et al. (1998), Ward (1989a, 1990, 1993).