Figure 4. Percent response of O. nubilalis Z race males to the O. furnacalis 2:1 Z/E blend (ACB, n = 154), or to the 2:1 Z/E O. nubilalis blend (ECB, n = 157). Values are for 4 behaviors: taking flight, 150 cm; initiation of upwind flight, 140 cm; upwind flight to the 40 cm mark, and touching the source, 0 cm. For each behavior/distance from source, letters that differ between blends are significantly different (2; P < 0.05).