Black Swallowtail Range
by Carole Ann Brown
(Spring Valley, CA)
I got all excited learning that Black Swallowtails love to use Rue for a host plant. However, I live in Spring Valley, an unincorporated area just east about 10 miles from San Diego. A friend just gave me lots of Rue seeds--and now it looks like they don't even get this far in the SW USA! Bummer. I have seen the Western and the Anise Swallowtails in my yard--and I have lots of Monarchs, Gulf fritillaries, CA sisters (I think), and some Mourning Cloaks.
I'll probably plant more Rue, anyway, just in case...
Yes, don't give up. "Butterflies and Moths of North America" showed that Black Swallowtails have been found in Southern California. Also, Rue is a host plant for the Giant Swallowtail and possibly the Anise Swallowtail which both have also been found in Southern California. Let us know if you are successful at attracting any of these Swallowtails with your Rue.