Journal
MOLECULAR PHYLOGENETICS AND EVOLUTION
Volume 49, Issue 3, Pages 958-968Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2008.08.025
Keywords
Phylogeography; Systematics; Metaphire formosae species group; Megascolecidae; Pheretima complex
Funding
- National Science Council of Taiwan [NSC92-2621-B-002-019]
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The earthworms of the Metaphire formosae species group distributed in Taiwan are members of the Pheretima complex within the Megascolecidae. In this study, the systematics and phylogeography of this species group were investigated using DNA sequences of mitochondrial cytochrome c oxidase subunit 1 (COI), 16S ribosomal (r)RNA, and NADH dehydrogenase subunit 1 (ND1). The results indicated that the 13 taxa of the M. formosae species group form a clade, including a cryptic species discovered in this study. In addition, Metaphire hengchunensis (James et al., 2005) should be regarded as a subspecies of Metaphire paiwanna Tsai et al., 2000, and Metaphire bununa glareoso Tsai et al., 2000 should be elevated to specific status. Phylogeographical inferences showed that allopatric speciation occurred in this species group during the rapid uplift of the main island of Taiwan between 5.0 and 2.5 million years ago. Our analysis exposes non-monophyly within each of the genera Amynthas and Metaphire, and more generally within the Pheretima complex. Further revisions of this speciose complex are urgently needed. (C) 2008 Published by Elsevier Inc.
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