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Taxonomic Synopsis of the Ponto-Mediterranean Ants of Temnothorax nylanderi Species-Group.

Csősz S, Heinze J, Mikó I - PLoS ONE (2015)

Bottom Line: We describe seven new species (T. angulinodis sp. n., T. angustifrons sp. n., T. ariadnae sp. n., T. helenae sp. n., T. lucidus sp. n., T. similis sp. n., T. subtilis sp. n.), raise T. tergestinus (FINZI, 1928) stat.n. to species level, and propose a new junior synonymy for T. saxonicus (SEIFERT, 1995) syn.n. (junior synonym of T. tergestinus).Furthermore, we provide a decision tree as an alternative identification key that visually gives an overview of this species-group.We make the first application to Formicidae of the Semantic Phenotype approach that has been used in previous taxonomic revisions.

View Article: PubMed Central - PubMed

Affiliation: Entomology, California Academy of Sciences, San Francisco, California, United States of America.

ABSTRACT
In the current revisionary work, the Temnothorax nylanderi species-group of myrmicine ants is characterized. Eighteen species belonging to this group in the Ponto-Mediterranean region are described or redefined based on an integrative approach that combines exploratory analyses of morphometric data and of a 658bp fragment of the mitochondrial gene for the cytochrome c oxidase subunit I (CO I). The species group is subdivided into five species complexes: T. angustifrons complex, T. lichtensteini complex, T. nylanderi complex, T. parvulus complex, T. sordidulus complex, and two species, T. angulinodis sp. n. and T. flavicornis (Emery, 1870) form their own lineages. We describe seven new species (T. angulinodis sp. n., T. angustifrons sp. n., T. ariadnae sp. n., T. helenae sp. n., T. lucidus sp. n., T. similis sp. n., T. subtilis sp. n.), raise T. tergestinus (FINZI, 1928) stat.n. to species level, and propose a new junior synonymy for T. saxonicus (SEIFERT, 1995) syn.n. (junior synonym of T. tergestinus). We describe the worker caste and provide high quality images and distributional maps for all eighteen species. Furthermore, we provide a decision tree as an alternative identification key that visually gives an overview of this species-group. We make the first application to Formicidae of the Semantic Phenotype approach that has been used in previous taxonomic revisions.

No MeSH data available.


Related in: MedlinePlus

Dendrogram of NC-UPGMA clustering of all lineages of Temnothorax nylanderi species-group.Separate colors represent different species. Sequence of information in the string designating the samples: final species hypothesis confirmed by confirmatory LDA _ country—locality—date—sample number.
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pone.0140000.g002: Dendrogram of NC-UPGMA clustering of all lineages of Temnothorax nylanderi species-group.Separate colors represent different species. Sequence of information in the string designating the samples: final species hypothesis confirmed by confirmatory LDA _ country—locality—date—sample number.

Mentions: An exploratory NC-Clustering revealed the existence of eighteen clearly separated clusters within the available specimens of Ponto-Caspian populations of the Temnothorax nylanderi species-group (Fig 2). This pattern was confirmed by a cumulative Linear Discriminant Analysis. The confirmatory analyses correctly classified 94% of the 1693 individuals. Validation by Leave One Out Cross Validation yielded a 93% classification success rate, which can be considered acceptable in such a complex, multidimensional discriminant space. The vast majority of species showed a perfect or nearly perfect separation from other morphospecies treated in this revision: T. angulinodis sp.n. (100%), T. angustifrons sp.n. (98.5%), T. ariadnae sp.n. (100%), T. artvinensis (95.8%), T. flavicornis (100%), T. laconicus (94.9%), T. lichtensteini (97.3%), T. lucidus sp.n. (94.3%), T. parvulus (97.1%), T. schoedli (93.8%), T. similis sp.n. (94.7%), T. sordidulus (95.6%) and T. subtilis sp.n. (95.5%).


Taxonomic Synopsis of the Ponto-Mediterranean Ants of Temnothorax nylanderi Species-Group.

Csősz S, Heinze J, Mikó I - PLoS ONE (2015)

Dendrogram of NC-UPGMA clustering of all lineages of Temnothorax nylanderi species-group.Separate colors represent different species. Sequence of information in the string designating the samples: final species hypothesis confirmed by confirmatory LDA _ country—locality—date—sample number.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4633182&req=5

pone.0140000.g002: Dendrogram of NC-UPGMA clustering of all lineages of Temnothorax nylanderi species-group.Separate colors represent different species. Sequence of information in the string designating the samples: final species hypothesis confirmed by confirmatory LDA _ country—locality—date—sample number.
Mentions: An exploratory NC-Clustering revealed the existence of eighteen clearly separated clusters within the available specimens of Ponto-Caspian populations of the Temnothorax nylanderi species-group (Fig 2). This pattern was confirmed by a cumulative Linear Discriminant Analysis. The confirmatory analyses correctly classified 94% of the 1693 individuals. Validation by Leave One Out Cross Validation yielded a 93% classification success rate, which can be considered acceptable in such a complex, multidimensional discriminant space. The vast majority of species showed a perfect or nearly perfect separation from other morphospecies treated in this revision: T. angulinodis sp.n. (100%), T. angustifrons sp.n. (98.5%), T. ariadnae sp.n. (100%), T. artvinensis (95.8%), T. flavicornis (100%), T. laconicus (94.9%), T. lichtensteini (97.3%), T. lucidus sp.n. (94.3%), T. parvulus (97.1%), T. schoedli (93.8%), T. similis sp.n. (94.7%), T. sordidulus (95.6%) and T. subtilis sp.n. (95.5%).

Bottom Line: We describe seven new species (T. angulinodis sp. n., T. angustifrons sp. n., T. ariadnae sp. n., T. helenae sp. n., T. lucidus sp. n., T. similis sp. n., T. subtilis sp. n.), raise T. tergestinus (FINZI, 1928) stat.n. to species level, and propose a new junior synonymy for T. saxonicus (SEIFERT, 1995) syn.n. (junior synonym of T. tergestinus).Furthermore, we provide a decision tree as an alternative identification key that visually gives an overview of this species-group.We make the first application to Formicidae of the Semantic Phenotype approach that has been used in previous taxonomic revisions.

View Article: PubMed Central - PubMed

Affiliation: Entomology, California Academy of Sciences, San Francisco, California, United States of America.

ABSTRACT
In the current revisionary work, the Temnothorax nylanderi species-group of myrmicine ants is characterized. Eighteen species belonging to this group in the Ponto-Mediterranean region are described or redefined based on an integrative approach that combines exploratory analyses of morphometric data and of a 658bp fragment of the mitochondrial gene for the cytochrome c oxidase subunit I (CO I). The species group is subdivided into five species complexes: T. angustifrons complex, T. lichtensteini complex, T. nylanderi complex, T. parvulus complex, T. sordidulus complex, and two species, T. angulinodis sp. n. and T. flavicornis (Emery, 1870) form their own lineages. We describe seven new species (T. angulinodis sp. n., T. angustifrons sp. n., T. ariadnae sp. n., T. helenae sp. n., T. lucidus sp. n., T. similis sp. n., T. subtilis sp. n.), raise T. tergestinus (FINZI, 1928) stat.n. to species level, and propose a new junior synonymy for T. saxonicus (SEIFERT, 1995) syn.n. (junior synonym of T. tergestinus). We describe the worker caste and provide high quality images and distributional maps for all eighteen species. Furthermore, we provide a decision tree as an alternative identification key that visually gives an overview of this species-group. We make the first application to Formicidae of the Semantic Phenotype approach that has been used in previous taxonomic revisions.

No MeSH data available.


Related in: MedlinePlus