DistributionRead full entry
DistributionAptostichus dantrippi as currently defined is distributed primarily throughout Kern County with a few specimens taken from the Temblor Range along the western border with San Luis Obispo County (Map 12). The distribution essentially “rings” the ranges that bound the southernmost extent of the Central Valley and includes the San Emigdio, Tehachapi, and Greenhorn Mountains. The species is mostly restricted to the south valley alluvium and basins, Sierran steppe and mixed and coniferous forests ecoregions of Kern County (Map 12). The only known male specimen was collected during late fall (October). The DM prediction corresponds closely to the known distribution but predicts a high probability of occurrence along the Transverse Ranges. Conversely, the Bakersfield locality along the banks of the Kern River is located in an area of relatively low probability of occurrence; it is likely that this population is relictual given the nature and paucity of the habitat at this location.