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Fig. 4. (A) Oscillograms of late instar Antheraea polyphemus sounds
obtained during one-, two- and five-pinch trials. Arrows indicate the times
when each larva was attacked. (B) Number of clicks in 60 s produced by late
instar larvae following the first attack in one- (20.6±35.5), two-
(25.1±22.5) and five-pinch (54.3±46.1) trials (means ±
s.d.). The total amount of signaling is positively correlated with the number
of attacks (*P<0.001).