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Discriminating Between Adult Mandibles of Oryzaephilus surinamensis and Oryzaephilus Mercator Using Setal Brush Length



Discriminating Between Adult Mandibles of Oryzaephilus surinamensis and Oryzaephilus Mercator Using Setal Brush Length



Journal of AOAC International 76(4): 941-943



The setal brush was identified as a diagnostic characteristic which can be used to distinguish between the mandibles of adult Oryzaephilus surinamensis and O. mercator. The right and left setal brushes of 50 specimens from each species were measured. Statistical analysis showed that the mean brush lengths of the 2 species were significantly different (p = 0.0001). A demarcation value was established to distinguish between the mandibles. By using this value it is possible to reliably classify the mandibles of O. surinamensis and O. mercator. A mandible with setal brush gt 0.0296 mm would be classified as O. mercator,a mandible with a setal brush lt 0.0296 mm would be classified as O. surinamensis.

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Accession: 009819769

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