Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae). Author Longino, J. T. text Zootaxa 2009 2181 1 90 http://hol.osu.edu/reference-full.html?id=22820 journal article 22820 Pheidole erratilis Pheidole erratilis Wilson, 2003: 414 , figs. Holotype major worker and associated paratype minor worker: Costa Rica, Prov. Alajuela, 3km S Volcan Arenal, 10°26'N 84°42'W , 700m, 17 Feb 1994 (J. Longino) [ INBC ] (examined). Pheidole petersoni Wilson, 2003: 486 , figs. Holotype major worker and associated paratype minor worker: Costa Rica, Prov. Alajuela, Penas Blancas, 10.300° N 84.751°W , 940m, 24 Jul 1984 (J. Longino) [ INBC ] (examined). New synonymy. Geographic Range Costa Rica. Biology This species occurs in wet forest habitats, from sea level to 1400m elevation. Nests are in rotten wood or dead sticks on or near the forest floor. Workers are occasionally collected in Winkler or Berlese samples, but have not been collected at baits. Comments The types of these two species were collected less than 20km apart and are within the range of variation typical for a single species.