“…If such signals are to be effective as reproductive isolating mechanisms, however, they must remain unambiguous to recipients over the wide range of temperature typically experienced by lacewings in the field. Abundant documentation exists of gross alteration in chirp rate, wing-stroke frequency, pulse or chirp duration, or call notes by temperature changes in many taxonomically disparate insect groups (Brooks 1882, Hayward 1901, Alexander 1956, Walker 1962, Dumortier 1963, Shaw 1968, Booij 1982 (Henry 1980a(Henry , 1982b Fig. 3A), while terminal portions remain within a much narrower range of values over equivalent temperature extremes (slope 0.960x).…”