A PDF field guide to the species reported in and around San Ysidro Mountain Wilderness Study Area, with common and scientific names and up to 3 photos of each, laid out for use in the field and offline.
Species people report often in and around San Ysidro Mountain Wilderness Study Area include Small Honey Ant, Pallid-Winged Grasshopper, Turkey, Honey Clover and Common Cryptantha. Plants lead the list with 39 species, followed by 4 insects and 3 birds.
The 20 species reported most often here, of 50 in the full guide.


Small Honey Ant
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Pallid-Winged Grasshopper
Honey Clover



Common Cryptantha

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Annual Rabbitsfoot Grass