The Westpalaearctic Lasius paralienus complex (Hymenoptera: Formicidae) contains three species

Seifert, Bernhard; Galkowski, Christophe

doi:10.11646/zootaxa.4132.1.4

Cited by 844 publications

(21 citation statements)

References 6 publications

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“…The following taxonomic literature was considered for the identification of species: Arnol'di [1977], Borowiec and Salata [2013], Csősz et al [2007Csősz et al [ , 2015Csősz et al [ , 2018, Dlussky [1969], Dlussky and Radchenko [1994], Dlussky and Zabelin [1985], Radchenko [1994bRadchenko [ , 1996aRadchenko [ , b, 1997Radchenko [ , 1998], Radchenko and Elmes [2010], Borowiec [2015, 2018], , Seifert [1992Seifert [ , 2000aSeifert [ , 2002Seifert [ , 2003Seifert [ , 2011Seifert [ , 2016Seifert [ , 2018, Seifert and Galkowski [2016], Seifert and Schultz [2009a, b], Seifert et al [2017], Steiner et al [2018], Wagner et al [2017]. Where available, we compared our samples with high quality images of the type specimens on the AntWeb website [http://www.antweb.org].…”

Section: Methodsmentioning

confidence: 99%

New data on the ant fauna (Hymenoptera: Formicidae) of Azerbaijan

Bračko¹

2019

Cauc. Entomol. Bull.

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Section: Methodsmentioning

confidence: 99%

New data on the ant fauna (Hymenoptera: Formicidae) of Azerbaijan

Bračko¹

2019

Cauc. Entomol. Bull.

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“…After collection, all ants were stored in ethanol to conserve them for further analysis. Ants were identified using Czechowski, Radchenko, Czechowska, and Vepsäläinen (2012), Radchenko and Elmes (2010), Seifert (2007), Seifert and Galkowski (2016), Seifert and Schultz (2009…”

Section: Sampling Designmentioning

confidence: 99%

Direct and indirect effects of land‐use intensification on ant communities in temperate grasslands

Heuss

Grevé

Schäfer

et al. 2019

Ecology and Evolution

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Land‐use intensification is a major driver of local species extinction and homogenization. Temperate grasslands, managed at low intensities over centuries harbored a high species diversity, which is increasingly threatened by the management intensification over the last decades. This includes key taxa like ants. However, the underlying mechanisms leading to a decrease in ant abundance and species richness as well as changes in functional community composition are not well understood. We sampled ants on 110 grassland plots in three regions in Germany. The sampled grasslands are used as meadows or pastures, being mown, grazed or fertilized at different intensities. We analyzed the effect of the different aspects of land use on ant species richness, functional trait spaces, and community composition by using a multimodel inference approach and structural equation models. Overall, we found 31 ant species belonging to 8 genera, mostly open habitat specialists. Ant species richness, functional trait space of communities, and abundance of nests decreased with increasing land‐use intensity. The land‐use practice most harmful to ants was mowing, followed by heavy grazing by cattle. Fertilization did not strongly affect ant species richness. Grazing by sheep increased the ant species richness. The effect of mowing differed between species and was strongly negative for Formica species while Myrmica and common Lasius species were less affected. Rare species occurred mainly in plots managed at low intensity. Our results show that mowing less often or later in the season would retain a higher ant species richness—similarly to most other grassland taxa. The transformation from (sheep) pastures to intensively managed meadows and especially mowing directly affects ants via the destruction of nests and indirectly via loss of grassland heterogeneity (reduced plant species richness) and increased soil moisture by shading of fast‐growing plant species.

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“…We generally considered the analysis of the extremely similar morphologies in the C. nuda group problematic when the smallest cluster contained less than ten nest samples and/or when the number of individual workers in the smallest cluster is less than threefold of the number of characters considered by the controlling LDA. This 10-samples stopping threshold, of course, does not apply when the morphologies of the considered clusters are not extremely similar- Seifert & Galkowski (2016), for example, considered a cluster of six samples and 18 workers as a valid sister species. Even more, the description of a species on the basis of only a single sample may be justified under certain conditions.…”

Section: Numobat: Explorative and Supervised Data Analyses Classificmentioning

confidence: 99%

A taxonomic revision of the Cardiocondyla nuda group (Hymenoptera: Formicidae)

Seifert

Okita²,

Heınze

2017

Zootaxa

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1,291

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A taxonomic revision of the Cardiocondyla nuda species group is presented based on methods of Numeric Morphology-Based Alpha-Taxonomy (NUMOBAT) and supplemented by analysis of mtDNA. A total of 258 samples with 571 worker individuals were investigated by the hierarchical and non-hierarchical exploratory data analyses NC-Ward and NC-K-Means clustering considering 16 NUMOBAT characters. Two species are described as new, increasing the number of species in the group to eight. We separate the group into two main clades: the C. mauritanica species complex, which is of Oriental and Indo-Australian origin and contains the cryptic species C. mauritanica Forel 1890, C. strigifrons Viehmeyer 1922, C. kagutsuchi Terayama 1999, and C. itsukii sp. nov. and the Australasian and Polynesian C. nuda species complex with the cryptic species C. nuda (Mayr 1866), C. atalanta Forel 1915, C. paranuda Seifert 2003, and C. compressa sp. nov. The mean error of the two NC-clustering methods relative to the controlling linear discriminant analysis was 0.4% in C. mauritanica, 2.2% in C. itsukii, 0% in C. strigifrons, 0% in C. kagutsuchi, 1.5% in C. nuda, 3.2% in C. atalanta and 3.2% in C. paranuda—all these data are below the 4% threshold recommended by the Pragmatic Species Concept. The morphologically determined species clusters were confirmed by mtDNA data with a rather strong sequence divergence among the cryptic species of the C. nuda complex of 5.6–7.9%. The mean mismatch of two different mtDNA analyses with NUMOBAT clustering was 5.4% in 54 samples of seven species of the C. nuda group for which mtDNA data were available. The mismatch thus is smaller than in many other studies of Eumetazoa in general or ants in particular and is probably explained by low frequencies of ancient hybridization and/or incomplete lineage sorting. Comments on zoogeography, colony demography and behavior are given in the species sections and determination keys are provided. Cardiocondyla ectopia Snelling 1974 and Leptothorax caparica Henin, Paiva & Collingwood 2002 (syn nov.) are synonymized under Cardiocondyla mauritanica. Cardiocondyla nuda sculptinodis is not a member of the C. nuda group and is moved to C. shuckardi sculptinodis, a revived combination.

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The Westpalaearctic Lasius paralienus complex (Hymenoptera: Formicidae) contains three species

Cited by 844 publications

References 6 publications

New data on the ant fauna (Hymenoptera: Formicidae) of Azerbaijan

New data on the ant fauna (Hymenoptera: Formicidae) of Azerbaijan

Direct and indirect effects of land‐use intensification on ant communities in temperate grasslands

A taxonomic revision of the Cardiocondyla nuda group (Hymenoptera: Formicidae)

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