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Genus: |
| Takydromus DAUDIN, 1802 |
Species (25): |
| Takydromus albomaculosus WANG, GONG, LIU & WANG, 2017 Takydromus amurensis PETERS, 1881 Takydromus dorsalis STEJNEGER, 1904 Takydromus formosanus BOULENGER, 1894 Takydromus guilinensis GUO, HU, CHEN, ZHONG & JI, 2024 Takydromus hani CHOU et al., 2001 Takydromus haughtonianus JERDON, 1870 Takydromus hsuehshanensis LIN & CHENG, 1981 Takydromus intermedius (STEJNEGER, 1924) Takydromus khasiensis BOULENGER, 1917 Takydromus kuehnei VAN DENBURGH, 1909 Takydromus luyeanus LUE & LIN, 2008 Takydromus madaensis BOBROV, 2013 Takydromus sauteri VAN DENBURGH, 1909 Takydromus septentrionalis GÜNTHER, 1864 Takydromus sexlineatus DAUDIN, 1802 Takydromus sikkimensis (GÜNTHER, 1888) Takydromus smaragdinus BOULENGER, 1887 Takydromus stejnegeri VAN DENBURGH, 1912 Takydromus sylvaticus POPE, 1928 Takydromus tachydromoides (SCHLEGEL, 1838) Takydromus toyamai TAKEDA & OTA, 1996 Takydromus viridipunctatus LUE & LIN, 2008 Takydromus wolteri FISCHER, 1885 Takydromus yunkaiensis WANG et al., 2019 |
Species Typica: |
| Takydromus sexlineatus DAUDIN, 1802 |
Taxonomic notes:
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| The genus was partly on two, or even three genera. ARNOLD (1997) recognizes only one genus with two subgenera. However, molecular data disprove these subgenera as monophyletic groups.
WERNER MAYER, 2015 |
Relevant taxonomic literature:
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Arnold, E.N. (1997) - Interrelationships and evolution of the east Asian grass lizards, Takydromus (Squamata: Lacertidae). - Zoological Journal of the Linnean Society, 119 (2): 267-296.   × The east Asian lacertid lizard genus, Takydromus, is well-defined but its relationships to other primitive Palaearctic lacertids are still uncertain and, although it has similarities to the lower Miocene Miolacerta. Takydromus does not appear to be identical with this. The 16 or 17 recognizable species are reviewed and a key provided for their identification; the remaining area of uncertainty about species boundaries is the Takydromus sexlineatus group in Assam. A phylogeny for Takydromus is estimated using a data set of 35 morphological characters drawn from external features, skeleton and soft-parts. There are two main constituent clades which may be informally recognized as Takydromus s.s. and Platyplacopus. Platyplacopus is subtropical and perhaps relict, whereas Takydromus ranges from temperature to tropical areas. The two clades have different ranges of eggs per clutch. In both of them, elongate forms that climb-extensively in flimsy vegetation have evolved and have independently acquired similar features that confer performance advantages in this situation. Interestingly, the order of assembly of these features is markedly different. Lin, S.M. & Chen, C.A. & Lue, K.Y. (2002) - Molecular phylogeny and biogeography of the grass lizards genus Takydromus (Reptilia: Lacertidae) of East Asia. - Molecular Phylogenetics and Evolution, 22: 276-288. × Takydromus Daudin is a group of Lacertidae lizards
with slender bodies and long tails. Half of the Takydromus
spp. are endemic to islands of eastern Asia
aligned along the Pacific margin of the East Asian
continent. This feature offers a good opportunity to
study the effects of glaciations and land connections
on the speciation of East Asian fauna. We reconstructed
the molecular phylogeny of Takydromus species
via the mitochondrial 12S rRNA gene. Phylogenetic
analyses using maximum-parsimony, neighborjoining,
and maximum-likelihood options do not
support a two-subgenera scheme of Takydromus and
Platyplacopus proposed earlier. In contrast, the phylogeny
of Takydromus species on islands fits the sequential
separation of island groups influenced by
changes in sea level. The hypothesis in our prediction
supports the process of vicariant speciation and multicolonization
of grass lizards on eastern Asian islands.
At least two obvious colonization events were
followed by vicariance events. Because the molecular
clock of the 12 rRNA gene was not rejected in our
model test, it is possible to estimate times of speciation
events. As the most isolated and basal species
compared to other temperate and subtropical species
of Takydromus, the separation period of T. smaragdinus
in the central Ryukyus is the crucial point
in estimating the evolutionary rate. Quaternary-origin
or Tertiary-origin models are proposed and discussed Ota, H. & Honda, M. & Chen, S.-L. & Hikida, T. & Panha, S. & Oh, H.-S. & Matsui, M. (2002) - Phylogenetic relationships, taxonomy, character evolution and biogeography of the lacertid lizards of the genus Takydromus (Reptilia: Squamata): a molecular perspective - Biological Journal of the Linnean Society, 76: 493-509. × Historical relationships were inferred for the oriental lizards of the genus Takydromus Daudin 1802 (Lacertidae) on the basis of DNA sequences. Of the 17 species currently recognized for the genus, 13 species represented by 42 specimens from 29 localities were examined. Maximum-likelihood and maximum-parsimony analyses of data for 829 aligned sites from parts of the mitochondrial 12S and 16S rRNA genes yielded relationships that, while showing no substantial discrepancy with each other, were strikingly different from a currently prevailing phylogenetic hypothesis from a parsimony analysis of morphological characters. Based on the results of these molecular analyses, supplemented by results of the morphological analysis that offered robust evidence for positions of two additional species (T. khasiensis and T. sylvaticus), the following interrelationships were hypothesized as the most preferred phylogeny: (kuehnei (sexlineatus khasiensis))(tachydromoides ((smaragdinus (sauteri (dorsalis sylvaticus))) (amurensis (((formosanus wolteri) hsuehshanensis)(toyamai (septentrionalis stejnegeri)))))). These interrelationships indicate: (1) invalidity of Platyplacopus Boulenger 1917, which was recently resurrected as a subgenus of Takydromus on the basis of the morphological analysis; (2) homoplasy in states of some morphological characters, such as green dorsal coloration, that were considered as synapomorphs of certain nodes in the morphological analysis; and (3) involvement of the genus in a series of vicariances in both the continental and insular parts of eastern Eurasia. Due to the paucity of available samples, phylogenetic status of T. intermedius and T. haughtonianus remain to be examined in future studies.
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