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Morphological study of rhigopsidius tucumanus coleoptera curculionidae a potato pest in the quebrada de humahuaca and puna of the province of jujuy argentina



Morphological study of rhigopsidius tucumanus coleoptera curculionidae a potato pest in the quebrada de humahuaca and puna of the province of jujuy argentina



Revista Agronomica del Noroeste Argentino 19(1-4): 5-42



Some aspects of the pest were studied under a morphobiological point of view. The following steps were carried out: description of preimaginal and adult stages shown in the original drawings; biology of the species in the laboratory and in the field; description and evaluation of the damage; and identification of a natural enemy. Healthy and infected tubers of S. tuberosum cv. Collareja were used in the laboratory and in the field. R. tucumanus Heller is the most important pest attacking potato crops in the Jujuy Puna and Quebrada de Humahuaca since up to 58% of the tubers were attacked. This species has only 1 annual generation and incipient damage caused by the larvae can be observed when the tubers are in full growth. Preimaginal and part of the pre-reproductive stages occur within the tubers. Solenopsis saevisima Smith (Hymenoptera:Formicidae) is a R. tucumanus larval predator.

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