Dr. Shapiro of UC Davis is an expert in California butterflies. He will begin the evening with a walk through the North Lake Tahoe Demonstration Garden's butterfly garden at 4:45 p.m. Thursday, Aug. 5, on the Sierra Nevada College campus in Incline Village. The presentation will continue at 5:30 p.m. in the Tahoe Center for Environmental Sciences building. Wine and cheese will precede the lecture. At 6 p.m. Dr. Shapiro will begin his talk on which butterfly species are most common to Tahoe and how to attract butterflies to your garden. For information go to www.demogarden.org or call (775) 586-1610 ext. 25.