Morphological description of Opalina obtrigonoidea Metcalf, 1923 (Heterokonta, Opalinea) from Duttaphrynus melanostictus and evaluation of the ITS region as a suitable genetic marker for inter-species identification in Opalina

1. Zhao, W.
2. Hu, G.
3. Ponce-Gordo, F.
4. Zou, H.
5. Li, W.
6. Wu, S.
7. Li, M.
8. Wang, G.