Male crickets (Orthoptera: Gryllidae) compete for females through direct physical aggression (ALEXANDER, 1961; BURK, 1983; BOAKE, 1984; DIXON & CADE, 1986) and acoustic signalling behaviour (ALEXANDER, 1975; CADE, 1979a). Females respond phonotactically to the calling songs of conspecific males by walking or flying to them (WALKER, 1957; ZARETSKY, 1972; ULAGARAJ & WALKER, 1973; PAUL, 1976; POPO...