| Summary: | 碩士 === 國立臺灣師範大學 === 生命科學系 === 104 === The Tailed Punch, Dodona eugenes, contains seven subspecies currently recognized. Two of them, namely ssp. formosana in northern Taiwan and ssp. esakii in central and southern Taiwan, are hard to distinguish due to their ambiguous diagnostic characters on body size, wing pattern, and host plant utilization. Other than these taxonomic status of subspecies of D. eugenes in Taiwan, systematic problems are also found in D. eugenes species complex. In the first part of this study, we clarify the taxonomic status of the two subspecies of D. eugenes in Taiwan using evidences provided by host plant utilization, genital characters, and molecular sequences (cox1, cox2 and Ef-1α). Secondly, by using molecular sequences (cox1, cox2 and Ef-1α) for each of 3 outgroup and 17 taxa of genus Dodona, we constructed phylogenetic tree of this genus and checked the congruence between phylogenetic tree and genital character of each taxon. Our results showed that there is no significant difference between the two previously recognized subspecies in Taiwan on host plant utilization, morphology of genitalia and molecular data, therefore, ssp. esakii probably should be regarded as a junior synonym of ssp. formosana. The phylogenetic tree and genital character showed considerable congruence, but D. eugenes under present usage emerged as a polyphyletic assemblage in the phylogenetic tree, and population in Taiwan is sister to D. egeon. Based upon the proposed phylogeny, the following nomenclatural change are made: Dodona eugenes formosana is raised to specific status as Dodona formosana Matsumura, stat. rev.
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