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DistributionThe distribution of Aptostichus cabrillo is restricted geographically to a small area in around San Diego, San Diego Co. with one specimen known from just to the south in Mexico (Baja California); the primary habitat throughout this region is coastal chaparral forest and shrub. The DM for this species indicates that suitable habitat in San Diego is restricted to the San Diego area along the coast. Failure to predict the occurrence of some of the outlying localities to the east may suggest that some of those specimens may have been misidentified–however, many of these are males that are easy to distinguish from Aptostichus icenoglei. Most male specimens have been collected during the summer months (June–September) with a few taken from pitfalls in October, November and January.