Click here for the orignal journal page (in Acrobat pdf format).

The text below is grayed out because it is not intended to be read. It is a necessarily imperfect OCR of the original and is only used by a search engine.
1964                             Journal of the Lepidopterists' Society                               157
Acknowledgement
Grateful acknowledgement is made to the Rob & Bessie Welder Wild­life Foundation for supporting the extra printing costs of this paper.
References
Bailey, L. H., 1939. The Standard Cyclopedia of Horticulture. Macmillan Co.,
New York. Brower, L. P. 1958. Larval foodplant specificity in butterflies of the Papilio
glaucus group. Lepid. News, 12: 103-114. Ehrlich, P. R., & A. H. 1961. How to Know the Butterflies. Dubuque, Iowa;
Brown. 262pp. Jones, F. B., C. M. Rowell, Jr., & M. C. Johnston, 1961. Flowering Plants and Ferns
of the Texas Coastal Bend Counties. Sinton, Texas; Rob & Bessie Welder
Wildlife Foundation. 146pp. Kendall, R. O., 1957. New foodplants in Texas for Papilio multicaudatus. Lepid.
News 11: 224. ..............., 1959. More larval foodplants from Texas. Journ. Lepid. Soc, 13:
221-228. Klots, A. B., 1951. A Field Guide to the Butterflies. Houghton Mifflin Co., Baston. Remington, C. L., 1952. The biology of Neartic Lepidoptera, II. Foodplant and
pupa of Hemiargus isolus. Psyche, 59: 129-130. Stallings, D. B., 1941. A note on Strymon alcestis (Edw.). Journ. Kans. Ent. Soc,
14: 63. Straatman, R., 1962. Notes on certain Lepidoptera ovipositing on plants which are
toxic to their larvae. Journ. Lepid. Soc, 16: 99-103. Turner, B. L., 1959. The Legumes of Texas. University of Texas, Austin. Vines, R. A., 1960. Trees, Shrubs and Woody Vines of the Southwest. University of
Texas, Austin. Wills, M. M. & H. S. Irwin, 1961. Roadside Flowers of Texas. University of Texas,
Austin.
VENATION ABERRATION IN PAPILIO GLAUCUS
In June of 1961 on a dirt road in the woods near Weston, Vermont, I came across a flight of Papilio glaucus canadensis Rothschild & Jordan, and in a several day period took nearly two hundred. They were all fresh males, flying southeast, single file about five feet from the ground along the sunny side of the road. The flight was most dense during the late morning hours, when the individuals were flying by at the rate of six to seven a minute.
Returning to the same spot in 1962 the same phenomenon was dis­covered being repeated. It was on June 8, 1962 during one of these flights that a specimen was captured with the following venational aberration.
Vein Mi on each of the hind wings, rather than continuing singly to the margin, divides and bows into an oval coming back together to form
158                                         Bouton: Venation aberration                         Vol. 18: no.3
Explanation of Plate
Papilio glaucus canadensis Rothschild & Jordan, $, undersurface, showing the aberration in vein M3 in both hind wings.
a single vein again just before reaching the margin. The symmetry is not exact however, since the division on the left wing begins at the cell and continues to within 2 mm of the margin; whereas on the right wing the oval is much shorter with the vein being normal for 2 mm next to the cell and for 3 mm on the margin.
Though many small variations in markings were found in specimens in the flight, this is the only specimen in which there was an outstanding aberration in the venation.
I might add that on repeated returns to the location in 1963, it was found that the flight was totally lacking, only four to five specimens being seen.
David W. Bouton, Box 204, Davenport, N.Y., U.S.A.