December 29, 2017
Catchfly Prairie Gentian (Eustoma exaltatum subsp. exaltatum), found
only at a few springs in Organ Pipe Cactus National Monument.
This is a rare plant in the desert but more common elsewhere.
A Cloudless Sulphur
Great Purple Hairstreak nectaring on Wislizenia refracta
My lifer butterfly, Howarth's White. I had photographed this species on December 19 but thought it was a Checkered White and deleted the photos. After discovering that this was actually a Howarth's White, I had to recover my photos from the recycle bin! Howarth's White is a species found only in Mexico in Sonora, Sinaloa and the Baja California. It is found regularly in the United States only at Quitoboquito Spring in Organ Pipe Cactus National Monument, where the larval food plant, Desert Caper, is found.
Howarth's White
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