00482nas a2200121 4500008004100000245015000041210007000191260001500261300000900276490000700285100002200292856004600314 195 eng d00aTwo new Central European subspecies of Leptothorax nylanderi (Förster, 1850) and Leptothorax sordidulus Müller, 1923 (Hymenoptera: Formicidae).0 aTwo new Central European subspecies of Leptothorax nylanderi För c1995-12-31 a1-180 v681 aSeifert, Bernhard uhttps://greekants.myspecies.info/node/56302058nas a2200133 4500008004100000245010900041210006900150260001500219300001000234490000700244520160500251100002201856856004601878 2020 eng d00aA taxonomic revision of the Palaearctic members of the subgenus Lasius s.str. (Hymenoptera, Formicidae).0 ataxonomic revision of the Palaearctic members of the subgenus La c2020-05-26 a15-860 v923 a

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).

1 aSeifert, Bernhard uhttps://greekants.myspecies.info/node/54101370nas a2200193 4500008004100000245014600041210006900187260001500256300000900271490000700280520067200287653002300959653002000982653002901002653004401031653002001075100002201095856005901117 2019 eng d00aA taxonomic revision of the members of the Camponotus lateralis species group (Hymenoptera: Formicidae) from Europe, Asia Minor and Caucasia.0 ataxonomic revision of the members of the Camponotus lateralis sp c2019-04-01 a7-320 v913 a

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.

10acolor polymorphism10acryptic species10anest centroid clustering10anumeric morphology-based alpha-taxonomy10asize dimorphism1 aSeifert, Bernhard uhttp://soil-organisms.org/index.php/SO/article/view/5202165nas a2200181 4500008004100000245016600041210006900207260001200276300000800288490000600296520150400302653002601806653002301832653003101855653002901886100002201915856004601937 2005 eng d00aRank elevation in two European ant species: Myrmica lobulicornis Nylander, 1857, stat.n. and Myrmica spinosior Santschi, 1931, stat.n. (Hymenoptera: Formicidae).0 aRank elevation in two European ant species Myrmica lobulicornis  c2005-09 a1-70 v73 a

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 STÄRCKE, 1927, and M. lobicornis ssp. apennina STÄRCKE, 1927; and M. lobicornis NYLANDER, 1846, as senior synonym of M. lobicornis ssp. arduennae BONDROIT, 1911, M. lobicornis lobicornis var. lissahorensis STÄRCKE, 1927, M. lobicornis ssp. angustifrons STÄRCKE, 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.

10adiscriminant analysis10alectotype fixation10aMyrmica lobicornis complex10aMyrmica sabuleti complex1 aSeifert, Bernhard uhttps://greekants.myspecies.info/node/46900889nas a2200145 4500008004100000245012700041210006900168260001500237300001000252490000600262520038700268100002200655700002000677856004600697 1999 eng d00aCarrying of a worker pupa by a single-dispersing foundress of Acropyga paleartica Menozzi, 1936 (Hymenoptera: Formicidae).0 aCarrying of a worker pupa by a singledispersing foundress of Acr c1999-12-20 a63-650 v33 a

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.

1 aSeifert, Bernhard1 aHeller, Gerhard uhttps://greekants.myspecies.info/node/46800409nas a2200121 4500008004100000245008100041210006900122260000900191300001200200490000700212100002200219856004600241 2002 eng d00aA taxonomic revision of the Formica cinerea group (Hymenoptera: Formicidae).0 ataxonomic revision of the Formica cinerea group Hymenoptera Form c2002 a245-2720 v741 aSeifert, Bernhard uhttps://greekants.myspecies.info/node/467