Two Malaise traps with 0.6-m high openings were placed on screen platforms and used to sample Tabanid populations at various heights above ground level. Seventy percent or more of the Tabanids were collected when the opening was less than 1.8 m above ground. In most cases, a higher percentage was collected at heights between 0.9 and 1.5 m (26.1-65.3%) than at heights between 0 and 0.6 m (14.3-45.8%).