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Orientation of Phalerisida maculata Kulzer (Coleoptera, Tenebrionidae) in sandy beaches of the Chilean coast. Orientation of Phalerisida maculata in sandy beaches
Authors:Avellanal  Jaramillo  Naylor  Kennedy
Institution:Instituto de Zoología-Universidad Austral de Chile, Casilla 567, Valdivia, Chile
Abstract:The orientation stimuli of adult individuals of the beetle Phalerisida maculata Kulzer (Coleoptera, Tenebrionidae) over the beach surface, were studied at two sandy beaches of the chilean coast approximately 1300 km apart, Apolillado (ca. 29 degrees S) and Playa Universitaria de Mehuín (ca. 39 degrees S). Phalerisida maculata did not orient by astronomic cues such as the sun and moon, nor by the terrestrial magnetic field. Both populations showed positive scototaxis, and oriented downward on slopes with dry sediments, and upwards on slopes with wet sediments.
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