Wednesday, November 7, 2018

[Herpetology • 2018] Ptychozoon popaense • Geographically Structured Genetic Variation in Ptychozoon lionotum (Squamata: Gekkonidae) and A New Species from An Isolated Volcano in Myanmar

Ptychozoon popaense
Grismer, Wood, Thura, Grismer, Brown & Stuart, 2018

A molecular phylogenetic analysis of Parachute Geckos (Genus Ptychozoon Kuhl & van Hasselt, 1822) based on the mitochondrial gene ND2 indicates that a newly discovered population from the Mt. Popa volcano—a habitat island in the northern portion of the Bago Yoma mountains, Myanmar—is a new species, Ptychozoon popaense sp. nov. This species is part of a clade that contains P. bannanense Wang, Wang, & Liu, 2016 and P. lionotum Annandale, 1905 of Indochina. Ptychozoon popaense sp. nov. is morphologically most similar to its sister species P. lionotum which manifests considerable geographic substructuring of genetic variation but differs from the nominate taxon by an uncorrected pairwise sequence divergence of 16.0–17.1% and by discrete differences in morphology and color pattern. This discovery highlights the unique, insular nature of the Bago Yoma mountains of the Ayeyarwady Basin, which support other endemic gekkonids. It also underscores the growing diversity in this highly derived clade of cryptic, parachuting, geckos characterized by highly divergent genetic lineages, which may indicate the presence of additional, unrecognized species.

Keywords: Reptilia, Squamata, Phylogenetic taxonomy, Mt. Popa, Ayeyarwady Basin

FIGURE 2. Adult male holotype of Ptychozoon popaense sp. nov. (LSUHC 13508) from the type locality, ...., Mt. Popa, Mandalay Region, Myanmar.

Ptychozoon popaense sp. nov.
 Mt. Popa Parachute Gecko

Distribution. Ptychozoon popaense is know only from the type locality from ..., Mt. Popa, Mandalay Region, Myanmar (Fig. 1).

Etymology. The gender of the genus Ptychozoon is neutral, therefore the specific epithet popaense is the adjective used here in reference to the type locality, Mt. Popa, Mandalay Region.

 Natural history. The type material was collected in deciduous dipterocap forest (Fig. 3). Both specimens were found on the walls of a small wooden building while foraging for insects during the evening at approximately 1900 hrs.

L. Lee Grismer, Perry L. Jr. Wood, Myint Kyaw Thura, Marta S. Grismer, Rafe M. Brown and Bryan L. Stuart. 2018. Geographically Structured Genetic Variation in Ptychozoon  lionotum (Squamata: Gekkonidae) and A New Species from An Isolated Volcano in Myanmar. Zootaxa. 4514(2); 202–214.   DOI: 10.11646/zootaxa.4514.2.4

No comments:

Post a Comment