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Release by Flight Exercise of a Chemotropic Response from Photopositive Domination in a Scolytid Beetle


ONE of the remarkable features of barkbeetles and ambrosia beetles is their power of discovery and selection of host tree material. From a mass of varied material in a forest they select and bore into specific-parts of specific trees, usually only when those trees are under stress of age, environment, injury or encroaching death. Certain of the ambrosia beetles show a strong preference for logs that have ‘ripened’ for a period of some weeks or months after being-felled. The species, Trypodendron (Xyloterus) lineatum Oliver (Scolytidae), is one of these.

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  1. Hadorn, C., “Recherches sur la morphologie, les stades evolutifs et l'hivernage du bostryche lisere (Xyloterus lineatus Oliv)”. Suppl. aux org. de la Soc. forest suisse No. 11 (1933).

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  2. Chapman, J. A., Proc. Tenth Int. Congr. Ent. 1956, 4, 375 (1958).

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GRAHAM, K. Release by Flight Exercise of a Chemotropic Response from Photopositive Domination in a Scolytid Beetle. Nature 184, 283–284 (1959).

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