H.  Wolda and Sabrosky, C. W., ?Insect visitors to two forms of _Aristolochia pilosa_ in Las Cumbres, Panama?, Biotropica, vol. 18, pp. 295-299, 1986.

R. E.  Woodruff, Beck, B. M., Skelley, P. E., Schotmann, C. Y. L., and Thomas, M. C., ?Checklist and bibliography of the insects of Grenada and The Grenadines?, Memoir. Center for systematic entomology. Gainesville, Florida, vol. 2, p. 286pp, 1998.