@article {561, title = {Three Turano-European species of the Temnothorax interruptus group (Hymenoptera: Formicidae) demonstrated by quantitative morphology.}, journal = {Myrmecological News}, volume = {26}, year = {2018}, month = {2018-02-21}, pages = {101-119}, chapter = {101}, abstract = {

The ant genus Temnothorax is very diverse in the Palaearctic region. It consists of many cryptic species which are hard to discover with conventional toolkits of alpha taxonomy. However, the modern, quantitative morphological approaches have been improved, and their increased accuracy and taxonomic specificity allow taxonomists to discover cryptic biological diversity on a much finer scale. In this paper, we provide quantitative morphology-based evidence in support of our contention that the Turano-European Temnothorax interruptus (Schenck, 1852) is, in fact, a complex of three clearly separable lineages. Species hypotheses are developed through NC-PART clustering, a highly automated protocol using two algorithms, NC-clustering and Partitioning Based on Recursive Thresholding (PART). Our results are based on a large dataset generated from 19 continuous morphometric traits measured on a total of 165 workers from 66 nest samples. Classifications returned by the exploratory analyses are confirmed by cross-validated Linear Discriminant Analysis (LOOCV-LDA) with a 0.6\% error rate in 166 workers. Two known type series, Temnothorax interruptus (Schenck, 1852) and Leptothorax tuberum ssp. knipovitshi Karavaiev, 1916, which meet the criteria for this species complex, are nested in the same cluster, and each classification is supported with posterior p = 1.0. Therefore, Leptothorax tuberum ssp. knipovitshi is considered a junior synonym of T. interruptus. The two other morphological clusters are described as T. morea sp.n. and T. strymonensis sp.n. Syntopic occurrence has been found in only one case, between Temnothorax interruptus and T. strymonensis, and mixed colonies were not observed. Temnothorax interruptus has been identified as a Turano-European species, with distribution from Spain to the Caucasus but completely unknown in the Mediterranean region. The two broadly sympatric East Mediterranean species, T. morea and T. strymonensis, occur widely in the region from Croatia to Turkey.

}, author = {Cs{\H o}sz, S{\'a}ndor and Salata, Sebastian and Borowiec, Lech} } @article {550, title = {Turning one into five: Integrative taxonomy uncovers complex evolution of cryptic species in the harvester ant Messor {\textquotedblleft}structor{\textquotedblright}.}, journal = {Molecular Phylogenetics and Evolution}, volume = {127}, year = {2018}, month = {2018-10-31}, pages = {387-404}, chapter = {387}, abstract = {

Seed harvesting ants are ecosystem engineers that shape vegetation, nutrient cycles, and microclimate. Progress in ecological research is, however, slowed down by poor species delimitation. For example, it has not been resolved to date, how many species the European harvester ant Messor \“structor\” (Latreille, 1798) represents. Since its first description, splitting into additional taxa was often proposed but not accepted later on due to inconsistent support from morphology and ecology. Here, we took an iterative integrative-taxonomy approach \– comparing multiple, independent data sets of the same sample \– and used traditional morphometrics, Wolbachia symbionts, mitochondrial DNA, amplified fragment length polymorphism, and ecological niche modelling. Using the complementarity of the data sets applied, we resolved multiple, strong disagreements over the number of species, ranging from four to ten, and the allocation of individuals to species. We consider most plausible a five-species hypothesis and conclude the taxonomic odyssey by redescribing Messor structor, M. ibericus Santschi, 1925, and M. muticus (Nylander, 1849) stat. rev., and by describing two new species, M. ponticus sp.n. and M. mcarthuri sp.n. The evolutionary explanations invoked in resolving the various data conflicts include pronounced morphological crypsis, incomplete lineage-sorting or ongoing cospeciation of endosymbionts, and peripatric speciation \– these ants\’ significance to evolutionary biology parallels that to ecology. The successful solution of this particular problem illustrates the usefulness of the integrative approach to other systematic problems of comparable complexity and the importance of understanding evolution to drawing correct conclusions on species\’ attributes, including their ecology and biogeography.

}, keywords = {Amplified fragment length polymorphism, Ecological niche modelling, Mitochondrial DNA, Species delimitation, Traditional morphometrics, Wolbachia endosymbionts}, doi = {https://doi.org/10.1016/j.ympev.2018.04.005}, url = {https://www.sciencedirect.com/science/article/pii/S1055790317305523?via\%3Dihub}, author = {Steiner, Florian M. and Cs{\H o}sz, S{\'a}ndor and B{\'a}lint Mark{\'o} and Alexander Gamisch and Lukas Rinnhofer and Clemens Folterbauer and Sarina Hammerle and Christian Stauffer and Wolfgang Arthofer and Schlick-Steiner, Birgit C.} } @article {489, title = {NC-Clustering demonstrates heterospecificity of the cryptic ant species Temnothorax luteus (Forel, 1874) and T. racovitzai (Bondroit, 1918) (Hymenoptera: Formicidae)}, journal = {Beitr{\"a}ge zur Entomologie}, volume = {64}, year = {2014}, pages = {47-57}, chapter = {47}, author = {Seifert, Bernhard and Cs{\H o}sz, S{\'a}ndor and Schulz, Andreas} } @article {488, title = { Cryptic diversity in the Mediterranean Temnothorax lichtensteini species complex (Hymenoptera: Formicidae)}, journal = {Organisms Diversity \& Evolution}, volume = {14}, year = {2014}, pages = {75-88}, chapter = {75}, author = {Cs{\H o}sz, S{\'a}ndor and Seifert, Bernhard and M{\"u}ller, Benedikt and Trindl, Andreas and Schulz, Andreas and Heinze, J{\"u}rgen} } @article {486, title = {Temnothorax crasecundus sp. n. {\textendash} a cryptic Eurocaucasian ant species (Hymenoptera, Formicidae) discovered by Nest Centroid Clustering}, journal = {ZooKeys}, volume = {479}, year = {2015}, pages = {37-64}, chapter = {37}, author = {Seifert, Bernhard and Cs{\H o}sz, S{\'a}ndor} } @article {484, title = {Taxonomic Synopsis of the Ponto-Mediterranean Ants of Temnothorax nylanderi Species-Group}, journal = {PLoS ONE}, volume = {10(11)}, year = {2015}, pages = {e0140000}, author = {Cs{\H o}sz, S{\'a}ndor and Heinze, J{\"u}rgen and Mik{\'o}, Istv{\'a}n} } @article {434, title = {Taxonomic revision of the Palaearctic Tetramorium chefketi species complex (Hymenoptera: Formicidae) }, journal = {Zootaxa}, volume = {1405}, year = {2007}, pages = {1{\textendash}38}, author = {Cs{\H o}sz, S{\'a}ndor and Radchenko, Alexander G. and Schulz, Andreas} } @article {404, title = {Ponera testacea Emery, 1895 stat. n.{\textendash}a sister species of P. coarctata (Latreille, 1802)(Hymenoptera, Formicidae)}, journal = {Acta Zoologica Academiae Scientiarum Hungaricae }, volume = {43}, year = {2003}, pages = {201-214}, abstract = {

A redescription, rank elevation, and lectotype designation of the neglected taxon Ponera coarctata\ var. testacea\ EMERY, 1895 are published. Two different morphometric approaches resulted in a clear separation of testacea from its sister species coarctata\ (LATREILLE, 1802). P. testacea is abundant in the Mediterranean region but is also widely distributed in Central Europe where it spreads north to 51\°30\’N. It is more xerothermophilic than coarctata and seems to avoid shaded, moister woodland habitats.

}, keywords = {lectotype, morphometric, Ponera}, author = {Cs{\H o}sz, S{\'a}ndor and Seifert, Bernhard} }