Special Publication #12
Charles V. Covell, Jr.
In North America, north of the Mexican border, there are about 765 species of butterflies; this is approximately equal to the number of birds, if we exclude the accidentals. Moths, their nocturnal cousins, outnumber butterflies 14 to 1 with a total of nearly 10,500 known species. Of this galaxy, over 1300 species are treated in this Field Guide, which has been prepared with such loving care and scholarship by Charles V. Covell, Jr.