During an exploratory trip to the states of Jalisco and Zacatecas in the Sierra Madre Occidental (SMOC), the bark beetle Dendroctonus rhizophagus Thomas & Bright, 1970 was recorded in two geographic localities of the Villa Guerrero municipality, Jalisco. These new records extend the range of distribution of this beetle a further 250 km south along the SMOC from the southernmost point recorded in the state of Durango. Furthermore, these records indicate that this species may be present in almost any area of the SMOC where conditions are suitable for its development.
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Armendáriz-Toledano et al. (2012) studied this question.