Distribution

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Distribution

  Most Aptostichus icenoglei specimens have been collected from the southern California counties Los Angeles, Orange, Riverside, San Bernardino, and San Diego (Map 14). Although only a single specimen is known from the northern reaches of the Baja Peninsula, it is likely that the species is distributed more extensively in this region of Mexico. The species is distributed widely throughout the Transverse Ranges to the north of the Los Angeles Basin and southward into the Santa Ana and San Jacinto Mountains and the ranges and hills surrounding the San Diego area (San Ysidro and Jamul Mountains and points north of the city). The DM (Map 15) indicates that considerable suitable habitat likely can be found in the areas surrounding San Diego and throughout the Santa Ana and San Jacinto Mountains. Interestingly the model shows the Transverse Ranges to the north and west of the Los Angeles Basin to be an area of lower probability. Given genetic structuring in populations and diversity of habitat it may very well be likely that Aptostichus icenoglei as defined here comprises more than one species. Primary habitat types for this species include coastal chaparral forest and shrub and coastal range open woodland shrub and coniferous forest. Based on pitfall trap records, male dispersal is wide ranging (August–May), however, most wandering males at lower altitudes appear to be taken during the early winter months of November–January likely associated with the winter rains.

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© Jason E. Bond

Source: ZooKeys

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