This is a somewhat variable species, but may easily be recognized by the figures we give. Expanse ♂, 2.00-2.50; ♀, 2.25-3.00 inches.
Ranges from New Mexico and Colorado west to California and north to Montana. The caterpillar feeds upon Sedum and Saxifraga.
Subfamily PAPILIONINÆ
(The Swallow-tails).
Large butterflies. As shown on [Plate B], Fig. 10, the hind wings lack the internal vein, its place being held by the submedian vein. There is great diversity of form in this group. Many species are tailed, as are the three occurring in Europe, and the name common in England has come in popular phrase to be loosely applied to the whole genus.
There are many hundreds of species and varietal forms, most of which occur in the tropics of the eastern and western hemispheres. There are only three species found in all Europe; there are about thirty found in the United States and Canada.
Genus PAPILIO Linnæus
(The Swallow-tails).
This great genus has been subdivided for purposes of classification into a number of smaller groups or subgenera, which are useful when dealing with the whole assemblage of species, but which in a manual like this, dealing with only a few forms, may consistently be overlooked.
PL. CXII
