FrogEyes
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Natsuhiko YOSHIKAWA, Masafumi MATSUI, Shingo TANABE, & Takehito OKAYAMA, 2012. Description of a New Salamander of the Genus Onychodactylus from Shikoku and Western Honshu, Japan (Amphibia, Caudata, Hynobiidae). Zootaxa 3693 (4): 441-464 .
Abstract
Recent phylogenetic studies using mtDNA and allozymes clarified the presence of multiple distinct genetic lineages in the Japanese clawed salamander, Onychodactylus japonicus, of which two from northern regions of the country have already been described as new species. Based on morphological analyses of the remaining genetic lineages, we describe the lineage from Shikoku Island and Chugoku Mountains of western Honshu, in western Japan, as a new species, Onychodactylus kinneburi sp. nov. It belongs to the O. japonicus complex and is morphologically similar to O. japonicus (sensu stricto), but is distinguishable from all the other members of the complex by sharply defined yellowish-orange dorsal stripe on black ground color, lack of dark marking on chest, whitish ventrum, comparatively large body size, and relatively narrow head, usually with 19 presacral vertebrae, 13 costal grooves, and relatively smaller number of vomerine tooth series. The new species occurs exclusively in Shikoku Island, but is sympatric with O. japonicus in Chugoku Mountains.
The paper also references two other undescribed species, from Tohoku and Kinki respectively, which have previously been identified in phylogenetic studies.
The species in this genus are now:
Onychodactylus fischeri group
Onychodactylus fischeri
Onychodactylus koreanus group
Onychodactylus koreanus
Onychodactylus zhaoermii
Onychodactylus zhangyapingi
Onychodactylus japonicus group
Onychodactylus japonicus
Onychodactylus kinneburi
Onychodactylus nipponoborealis
Onychodactylus tsukubensis
Onychodactylus sp. Kinki
Onychodactylus sp. Tohoku
My thanks and appreciation to Dr. Natsuhiko Yoshikawa.
Abstract
Recent phylogenetic studies using mtDNA and allozymes clarified the presence of multiple distinct genetic lineages in the Japanese clawed salamander, Onychodactylus japonicus, of which two from northern regions of the country have already been described as new species. Based on morphological analyses of the remaining genetic lineages, we describe the lineage from Shikoku Island and Chugoku Mountains of western Honshu, in western Japan, as a new species, Onychodactylus kinneburi sp. nov. It belongs to the O. japonicus complex and is morphologically similar to O. japonicus (sensu stricto), but is distinguishable from all the other members of the complex by sharply defined yellowish-orange dorsal stripe on black ground color, lack of dark marking on chest, whitish ventrum, comparatively large body size, and relatively narrow head, usually with 19 presacral vertebrae, 13 costal grooves, and relatively smaller number of vomerine tooth series. The new species occurs exclusively in Shikoku Island, but is sympatric with O. japonicus in Chugoku Mountains.
The paper also references two other undescribed species, from Tohoku and Kinki respectively, which have previously been identified in phylogenetic studies.
The species in this genus are now:
Onychodactylus fischeri group
Onychodactylus fischeri
Onychodactylus koreanus group
Onychodactylus koreanus
Onychodactylus zhaoermii
Onychodactylus zhangyapingi
Onychodactylus japonicus group
Onychodactylus japonicus
Onychodactylus kinneburi
Onychodactylus nipponoborealis
Onychodactylus tsukubensis
Onychodactylus sp. Kinki
Onychodactylus sp. Tohoku
My thanks and appreciation to Dr. Natsuhiko Yoshikawa.