Abstract
Previous studies reported four species and eight subspecies of the genus Aulonocarabus in South Korea. However, their morphological classification is difficult because of high morphological similarity. Our re-examination based on detailed morphological comparison confirmed that members of this group can be distinguished by their fully inflated endophallic structure and elytral sculpture. In addition, we performed molecular phylogenetic analysis using mitochondrial ND5. Based on our results, we have revised the morphological keys of this group and propose an intraspecific classification of A. semiopacus that contains distinct regional subspecies with regard to external morphology and molecular phylogeny. Besides, distribution maps, descriptions, and photographs of adult and of male genitalia are provided.
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