Introductory observations and collections were made in 1997 to identify areas where butterfly activity appeared to be most noticeable and to determine the main habitat types present in the area. Subsequent sampling has focused on these centers of activity, the gamut of habitat types containing known butterfly larval food plants, and surrounding forest areas. A total of 46 field trips were made between 11 May 1997 and 12 September 1999. Each trip usually included 2 to 3 hours of butterfly collecting and watching at selected locations. Time spent at each site within the study area was variable and based on the amount of observed butterfly activity. Trips were timed in accordance with suitable weather conditions and times of the day most conducive to butterfly activity. Trips were also timed so as to reduce the chance of not observing a species by simply not being present during its flight period.