Field studies in Florida using sticky traps baited with A-II synthetic female pheromone [(2S,3S,7S)-3,7-dimethylpentadecan-2-yl acetate] or a series of live virginNeodiprion lecontei(Fitch) females were conducted to determineN. leconteimale flight responses at different heights above ground. A-II and virgin females were interchangeable in eliciting male responses. Most males (≥84%) responded either to A-II-or female-baited traps placed at firetowers at 1 m, rather than at 14 or 28 m. The proportion of males responding to A-II at 1 m usually decreased in competition with the attraction of A-II or females at 14 m. When A-II-baited traps were placed at 1, 2, 3, 4, and 5 m per host pine 6 m tall, there was no significant (P>0.05) difference in the mean numbers of males caught per trap placed on trees with branches and foliage (possible host factor) artificially removed, than on intact (control) trees. When A-II-baited traps were placed singly at either 1, 2, 3, 4, or 5 m high per tree in trees with branches and foliage present, there was no significant (P>0.05) difference in mean catches. These data indicate that single A-II-baited traps will effectively attract males when placed in young pine stands on stakes at 1 m or on trees at ca. 2 m. Attempts to eradicateN. leconteiby continuous trapping of males at such heights probably would fail when virgin females were present in the crowns of large host trees nearby.