@article {563, title = {Two new Central European subspecies of Leptothorax nylanderi (F{\"o}rster, 1850) and Leptothorax sordidulus M{\"u}ller, 1923 (Hymenoptera: Formicidae).}, journal = {Abhandlungen und Berichte des Naturkundemuseums G{\"o}rlitz}, volume = {68}, year = {195}, month = {1995-12-31}, pages = {1-18}, chapter = {1}, author = {Seifert, Bernhard} } @article {541, title = {A taxonomic revision of the Palaearctic members of the subgenus Lasius s.str. (Hymenoptera, Formicidae).}, journal = {Soil Organisms}, volume = {92}, year = {2020}, month = {2020-05-26}, pages = {15-86}, chapter = {15}, abstract = {

A revision of the Palaearctic members of the ant subgenus Lasius s.str. is presented the fundamentals of which are application of Numeric Morphology-Based Alpha-Taxonomy (NUMOBAT), investigation of type specimens of 58 taxa, critical evaluation of original descriptions of further 22 taxa, and decision-making based on the GAGE species concept. Excluding nomina nuda and unavailable names, 80 taxa are considered which divide into 56 recognized good species (with 16 of these described here as new), 12 junior synonyms, 11 incertae sedis, and one name representing a F1 hybrid. Eighteen phenotypic characters \– seven shape, eight seta and two pubescence characters as well as absolute size \– were recorded numerically in 4900 worker individuals originating from 1722 nest or spot samples. The subdivision of the subgenera Lasius s.str. Ruzsky 1913, Cautolasius Wilson 1955, Dendrolasius Ruzsky 1913, Chthonolasius Ruzsky 1913 and Austrolasius Faber 1967 is clearly confirmed by morphological data with each of the 99 recognized Palaearctic species being unambiguously assignable to either subgenus. A key to the 56 Palaearctic species of Lasius s.str., subdivided into five geographic regions, is presented. All species are depicted as z-stack photos in two standard positions. The new species Lasius precursor sp. nov. is proposed as a model for transition from a largely monogynousmonodomous social type (exemplified by the sister species Lasius turcicus Santschi 1921) to a supercolonial type (exemplified by the closely related species Lasius neglectus Van Loon et al. 1990).

}, author = {Seifert, Bernhard} } @article {538, title = {A taxonomic revision of the members of the Camponotus lateralis species group (Hymenoptera: Formicidae) from Europe, Asia Minor and Caucasia.}, journal = {Soil Organisms}, volume = {91}, year = {2019}, month = {2019-04-01}, pages = {7-32}, chapter = {7}, abstract = {

A taxonomic revision of the Camponotus lateralis group based on methods of Numeric Morphology-Based Alpha-Taxonomy (NUMOBAT) is presented considering the Palaearctic region west of 46\°E. One size, nine shape and three setae characters were recorded in a total of 260 samples with 587 worker individuals. Species hypotheses were formed by three exploratory data analyses: the hierarchical methods NC-Ward and NC-part.hclust and the iterative vector-quantization method NC-part.kmeans. Samples with classifications disagreeing among the methods were finally allocated to a particular cluster by wild-card runs in a controlling linear discriminant analysis.

}, keywords = {color polymorphism, cryptic species, nest centroid clustering, numeric morphology-based alpha-taxonomy, size dimorphism}, doi = {https://doi.org/10.25674/so-91-1-02}, url = {http://soil-organisms.org/index.php/SO/article/view/52}, author = {Seifert, Bernhard} } @article {492, title = {Light at the end of the tunnel: Integrative taxonomy delimits cryptic species in the Tetramorium caespitum complex (Hymenoptera: Formicidae)}, journal = {Myrmecological News}, volume = {25}, year = {2017}, pages = {95-129}, chapter = {95}, author = {Wagner, Herbert C. and Wolfgang Arthofer and Seifert, Bernhard and Muster, Cristoph and Steiner, Florian M. 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 {478, title = {The Westpalaearctic Lasius paralienus complex (Hymenoptera: Formicidae) contains three species}, journal = {Zootaxa}, volume = {4132}, year = {2016}, pages = {44-58}, chapter = {44}, author = {Seifert, Bernhard and Galkowski, Christophe} } @article {477, title = {Inconvenient hyperdiversity {\textendash} the traditional concept of "Pheidole pallidula" includes four cryptic species (Hymenoptera: Formicidae)}, journal = {Soil Organisms}, volume = {88}, year = {2016}, pages = {1-17}, chapter = {1}, author = {Seifert, Bernhard} } @article {469, title = {Rank elevation in two European ant species: Myrmica lobulicornis Nylander, 1857, stat.n. and Myrmica spinosior Santschi, 1931, stat.n. (Hymenoptera: Formicidae).}, journal = {Myrmecologische Nachrichten}, volume = {7}, year = {2005}, month = {2005-09}, pages = {1-7}, abstract = {

Elevation to species level is performed for Myrmica lobicornis var. lobulicornis NYLANDER, 1857 and Myrmica\ sabuleti var. spinosior SANTSCHI, 1931. Myrmica lobulicornis is established as senior synonym of M. arduennae var.\ pyrenaea BONDROIT, 1918, M. lobicornis ssp. alpina ST\ÄRCKE, 1927, and M. lobicornis ssp. apennina ST\ÄRCKE,\ 1927; and M. lobicornis NYLANDER, 1846, as senior synonym of M. lobicornis ssp. arduennae BONDROIT, 1911, M.\ lobicornis lobicornis var. lissahorensis ST\ÄRCKE, 1927, M. lobicornis ssp. angustifrons ST\ÄRCKE, 1927, and M.\ lobicornis st. foreli SANTSCHI, 1931. The use of standardized morphometrics and discriminant functions enabled a\ safe allocation of any nest sample including the type samples to M. lobulicornis, M. lobicornis and M. wesmaeli\ BONDROIT, 1918 with an error probability of p \< 0.0007. The discrimination between M. sabuleti and M. spinosior\ was possible in 99 \% of 133 nest samples with p \< 0.007. The type sample of M. spinosior was allocated with an\ error probability of p = 0.006. Comparative morphometric and zoogeographical data of the six European species of\ the M. lobicornis and M. sabuleti complex are given.

}, keywords = {discriminant analysis, lectotype fixation, Myrmica lobicornis complex, Myrmica sabuleti complex}, author = {Seifert, Bernhard} } @article {468, title = {Carrying of a worker pupa by a single-dispersing foundress of Acropyga paleartica Menozzi, 1936 (Hymenoptera: Formicidae).}, journal = {Myrmecologische Nachrichten}, volume = {3}, year = {1999}, month = {1999-12-20}, pages = {63-65}, abstract = {

An alate queen of Acropyga paleartica MENOZZI, 1936 was observed to carry a worker pupa during dispersal for independent colony foundation. The observed behaviour is suspected to represent a redirected\ activity in connection with the fixed behavioural mechanism of Acropyga to carry a coccoid larva during\ dispersal, mating, and nest foundation.

}, author = {Seifert, Bernhard and Heller, Gerhard} } @article {467, title = {A taxonomic revision of the Formica cinerea group (Hymenoptera: Formicidae).}, journal = {Abhandlungen und Berichte des Naturkundemuseums G{\"o}rlitz}, volume = {74}, year = {2002}, month = {2002}, pages = {245-272}, author = {Seifert, Bernhard} } @article {421, title = {The ant genus Cardiocondyla (Insecta: Hymenoptera: Formicidae) - a taxonomic revision of the C. elegans, C. bulgarica, C. batesii, C. nuda, C. shuckardi, C. stambuloffii, C. wroughtonii, C. emeryi, and C. minutior species groups.}, journal = {Annalen des Naturhistorischen Museums in Wien. B, Botanik, Zoologie}, volume = {104}, year = {2003}, month = {2003-03}, pages = {203-338}, author = {Seifert, Bernhard} } @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} } @article {227, title = {The Palaearctic members of the Myrmica schencki group with description of a new species (Hymenoptera: Formicidae). }, journal = {Beitr{\"a}ge zur Entomologie}, volume = {53}, year = {2003}, month = {[2003-07-31] }, pages = {141-159. }, author = {Seifert, Bernhard} } @book {138, title = { Lasius platythorax n. sp., a widespread sibling species of Lasius niger (Hymenoptera: Formicidae). }, series = {Entomologia Generalis }, volume = {16}, number = { [1991-06-30] }, year = {1991}, pages = {69-81}, author = {Seifert, Bernhard} } @book {136, title = {Ameisen beobachten, bestimmen. }, year = {1996}, pages = {351}, publisher = {Naturbuch Verlag}, organization = {Naturbuch Verlag}, address = {Augsburg, Germany}, author = {Seifert, Bernhard} } @article {128, title = {Lasius (Chthonolasius) jensi n. sp. - eine neue tempor{\"a}r sozialparasitische Erdameise aus Mitteleuropa (Hymenoptera, Formicidae). }, journal = {Reichenbachia}, volume = {20}, year = {1982}, month = {[1982-09-27]}, pages = {85-96}, author = {Seifert, Bernhard} } @article {34, title = {Clarifying naming and identification of the outdoor species of the ant genus Tapinoma F{\"o}rster, 1850 (Hymenoptera: Formicidae) in Europe north of the Mediterranean region with description of a new species. }, journal = {Myrmecological News}, volume = {16}, year = {2012}, month = {[2012-01-20]}, pages = {139-147}, author = {Seifert, Bernhard} }