2-TIER BOX TRAP CATCHES CHRYSOPS-ATLANTICUS AND C-FULIGINOSUS (DIPTERA, TABANIDAE) NEAR A GEORGIA SALT-MARSH

A new two-tier box trap designed for collecting Chrysops was tested on St. Simons Island, GA. The bottom box was constructed of plywood 1.2 m wide with the sides painted flat black on the outside and glossy off -white on the interior. The upper box was of similar construction, but painted glossy off-white. The bottom edge of the lower box was 0.6 m above the ground, and the bottom edge of tile upper box was 1.8 m abov e the ground (0.6 m above the top of the lower box). In some trials, a glossy black beach ball was suspended below tile center of the box an d 1-octen-3-ol was dispensed midway between the boxes. Significantly m ore Chrysops fuliginosus Wiedemann and C. atlanticus Pechuman were col lected in tile upper box than in the lower box. A glossy spherical tar get and the presence of 1-octen-3-ol increased the catch of C. atlanti cus in the upper box.