Distinguishing Method between Adult Sexes of the Sap Beetle, <i>Phenolia</i> (<i>Lasiodites</i>) <i>picta</i> (Coleoptera: Nitidulidae)

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  • アカマダラケシキスイ（コウチュウ目：ケシキスイ科）成虫の生体による雌雄判別法

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The sex of adults of Phenolia (Lasiodites) picta (MacLeay) is distinguished by the morphology of the pygidium and the presence of a well sclerotized tergite VIII in males. These differences are visible under a binocular microscope at a low magnification (15×). As the difference between the sexes can be distinguished without killing specimens, it can be used to observe the specific behaviors of females and males and in ecological research.

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