Ceranus Blue (Hemiargus ceranus)

Ceranus Blue ventral - underwings on many blues are key to ID.

Reakirt's Blue (Hemiargus isola)

Western Pygmy-Blue (Brephidium exilis) (ventral)
is tiny at less than .75" long.

Reakirt's Blue (Hemiargus isola) - ventral right
on ventral forewing note white ringed black spots.

Marine Blue (Leptotes marina)

Ceraunus Blue (Hermiargus ceraunus)

Western Pygmy Blue at Utopia Pk.(UvCo)
(Brephidium exile)