Taxonomy of the Colocasiomyia gigantea species group (Diptera, Drosophilidae), with descriptions of four new species from Yunnan, China.
Species of the genus Colocasiomyia de Meijere feed/breed on inflorescences/infructescences of the plants from the families Araceae, Arecaceae and Magnoliaceae. Although most of them utilize plants from the subfamily Aroideae of Araceae, three species of the recently established C. gigantea species group make use of plants of the subfamily Monsteroideae. We describe four new species of the gigantea group found from Yunnan, China: Colocasiomyia longifilamentata Li & Gao, sp. n., C. longivalva Li & Gao, sp. n., C. hailini Li & Gao, sp. n., and C. yini Li & Gao, sp. n. The species delimitation is proved in virtue of not only morphology but also DNA barcodes, i.e., sequences of the partial mitochondrial COI (cytochrome c oxidase subunit I) gene. Some nucleotide sites with fixed status in the alignment of the COI sequences (658 sites in length) are used as "pure" molecular diagnostic characters to delineate species in the gigantea group.
Laboratory for Conservation and Utilization of Bioresources, Yunnan University, Kunming, Yunnan 650091, China ; School of Forestry, Southwest Forestry University, Kunming, Yunnan 650224, China.
Nan-Nan
NN
Li
Hokkaido University Museum, Hokkaido University, Sapporo, Japan.
Masanori J
MJ
Toda
Laboratory for Conservation and Utilization of Bioresources, Yunnan University, Kunming, Yunnan 650091, China.
Zhao
Z
Fu
Laboratory for Conservation and Utilization of Bioresources, Yunnan University, Kunming, Yunnan 650091, China.
Ji-Min
JM
Chen
School of Forestry, Southwest Forestry University, Kunming, Yunnan 650224, China.
Su-Hua
SH
Li
Laboratory for Conservation and Utilization of Bioresources, Yunnan University, Kunming, Yunnan 650091, China.
Jian-Jun
JJ
Gao
Adaptation; Rhaphidophora clade; aroid; character-based barcoding; cohabitation; genetic distance; integrated taxonomy