Author： STEWART KENNETH W. SZCZYTKO STANLEY W. STARK BILL P.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.75, Iss.5, 1982-09, pp. : 530-533
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Abstract
Previously undescribed Pteronarcys dorsata, Allonarcys biloba, and Allonarcys proteus drumming signals are species-specific, with male calls having five, seven, and four mode drumbeats, and beat intervals of 270 ± 26, 515 ± 46, and 308 ± 12 msec, respectively. Drumming of Tonsina River, Alaska, Pteronarcella badia populations appears to represent a dialect when compared with Dolores and Gunnison River, Colo., populations. Both males and females have fewer drumbeats and shorter beat intervals, despite recording at a 3°C cooler temperature. Mode signal beats of the five species are relatively few, ranging from 4 to 7, but beat intervals are of two types: fast signals (
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