Pearson 1975 Peru Aobredo de las Huacas, east of San Bartolo, Dept. of Arequipa, Peru Nov. 15 Took a collector south and got off at Sta Maria and walked back across the desert to our geckos of the quebrada. On the east side of the freeway about halfway between the Sta Maria turnoff and the turnoff for our Aobredo there were about 8 or 10 large teres flying around, several of them carrying minnows and some of them dive-bombed me. Looked for reeds but saw none. The quebrada is quite dry, the pepper trees pretty scrubby, but some in bloom and some already dry-mush bushes blooming. Saw several hummers of 2 species: a large one with long curved bill and dark collar, and a very small greenish brownish one. I don't think there are any new mud flowers. Camped at our usual place about 3 or 4 miles up the valley. Some of the mini-Tillandsia in bloom, the Passiflora quite lavender. The big Tillandsia plants on the south side of the valley look rather dry with partially rolled leaves, but they are in full bloom. The Petala sucker orange, as I had remembered, but its blooms quite purple. While I strolled through the tiny hummers was feeding on them (the Passiflora), and also a black fuzzy bee-fly. These flies are also working on a bush in bloom with dry mush. * stripe on side of head, white band on tips of tail feathers Concerning the wasp-gecko food-chain, camp was near some blooming bushes in the dry mud, and fleas,