Lasius psammophilus

Lasius psammophilus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Formicinae
Tribe:	Lasiini
Genus:	Lasius
Section:	niger clade
Species group:	alienus
Species complex:	obscuratus
Species:	L. psammophilus
Binomial name
Lasius psammophilus Seifert, 1992 Specimen labels

In Russia this species shows a strong preference for sandy soils in dry pine forests and similar habitats. Nests lack mounds (Zryanin & Zryanina, 2007). In Greece, nests are found mainly between slate rock slabs or under stones in mid-altitude pastures with shrubs.

Photo Gallery

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  Lasius psammophilus is relatively common in Italy in areas of sandy soil. Photo by Elia Nalini.

Identification

Palaearctic Lasius s. str. species belonging to the Lasius obscuratus species complex.

Keys including this Species

• Key to Europe and Asia Minor Lasius alienus group species
• Key to Palaearctic Lasius s. str.
• Key to Palaearctic Lasius subgenus Lasius s. st.
• Key to Lasius of Crete
• Key to Lasius species of the subgenus Lasius of Greece

Distribution

Seifert (2020) - European, temperate-submeridional. From British Isles and France across Central and East Europe. Rapid postglacial immigration into North Central Europe via sand dunes and the outwash plains of big ancient river valleys is highly probable. In Central Europe and S Fennoscandia most abundant in sandy regions of the planar and colline zone but penetrating also mountain areas along river valleys: in the S Schwarzwald ascending to 1000 m and in the Alps to 2030 m (in S Tyrol at 46.5°N). Competing with Lasius paralienus in the High Apennine grasslands. Absent from Iberia and probably also the S Balkans, in N Greece at 40°N between 1600 and 1900 m. Main border of northern distribution in Sweden and Finland at 63.5°N but ranging north to 65.8° along the shores of the Gulf of Bothnia. Sympatric occurrence with Lasius obscuratus in Asia Minor and Great Caucasus, here easternmost known site at 52.52°N, 44.94°E. Sympatric occurrence with Lasius piliferus occurs in the Pyrenees.

Latitudinal Distribution Pattern

Latitudinal Range: 64.4559° to 35.01667°.

North Temperate	North Subtropical	Tropical	South Subtropical	South Temperate

• Source: AntMaps

Distribution based on Regional Taxon Lists

Palaearctic Region: Austria, Belgium, Bulgaria, Croatia, Czechia, Germany (type locality), Greece, Hungary, Iberian Peninsula, Italy, Netherlands, Norway, Poland, Russian Federation, Slovakia, Slovenia, Spain, Sweden, Türkiye, United Kingdom of Great Britain and Northern Ireland.

Distribution based on AntMaps

Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.

Borowiec and Salata (2022) - In Greece, this is a dominant ant species on mountain pastures with shrubs at altitude between 1000 to 1720 m.

Biology

Regional Notes

Borowiec and Salata (2022) - In Greece, it is a dominant ant species on mountain pastures with shrubs at altitude between 1000 to 1720 m. Nests were found mainly between slate rock slabs or under stones.

Association with Other Organisms

 Explore: Show all Associate data or Search these data. See also a list of all data tables or learn how data is managed.

This species is a host for the temporary parasites Lasius carniolicus, Lasius meridionalis, Lasius reginae and Lasius umbratus (unconfirmed).

Flight Period

						X	X
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

Source: antkeeping.info.

• Check details at Worldwide Ant Nuptial Flights Data, AntNupTracker and AntKeeping.

 Explore: Show all Flight Month data or Search these data. See also a list of all data tables or learn how data is managed.

Castes

Worker

Images from AntWeb

Worker. Specimen code casent0172733. Photographer April Nobile, uploaded by California Academy of Sciences.	Owned by CAS, San Francisco, CA, USA.

Queen

Images from AntWeb

Queen (alate/dealate). Specimen code casent0172728. Photographer April Nobile, uploaded by California Academy of Sciences.	Owned by CAS, San Francisco, CA, USA.

Male

Images from AntWeb

Male (alate). Specimen code casent0172734. Photographer April Nobile, uploaded by California Academy of Sciences.	Owned by CAS, San Francisco, CA, USA.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

• psammophilus. Lasius (Lasius) psammophilus Seifert, 1992b: 15, figs. 4, 6, 11 (w.q.) GERMANY.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Seifert (2020) - Absolute size rather small (CS 826 µm). Scape and head length indices and number of mandibular dents medium (SL/CS900 0.960, CL/CW900 1.057, MaDe900 8.3). Clypeal pubescence rather dilute (sqPDCL900 4.56). Pronotal setae of medium length (PnHL/CS900 0.146), significantly longer than gular setae (GuHL/CS900 0.097). Dorsum of scape and extensor profile of hind tibia without or only few semierect setae. It differs from the eastern sister species Lasius obscuratus by the shorter terminal segment of maxillary palps(MP6/CS900 0.145 vs. 0.173) and from the western sister species Lasius piliferus by longer scape (SL/ CS900 0.960 vs. 0.929), larger eye (EYE/CS900 0.238 vs. 0.220) and lower seta numbers. Coloration: head brown, mesosoma a little lighter brown with a yellowish tinge, gaster dark brown; petiole, coxae and femora yellowish brown; mandibles and anterior clypeal border yellowish-reddish, scape yellowish.

See table 3 in Seifert 2020 for additional morphometrics. The abbreviated names of various quantitative data shown above are defined here: Seifert 2020 Lasius characters.

Borowiec and Salata (2022) - Large, HL 0.739-0.1.016 (mean 0.879), HW 0.686-0.928 (mean 0.825), ML 0.93-1.29. Scape moderately elongate, SL 0.725-0.962 (mean 0.821). Color. Body light reddish brown to medium brown with reddish tinge, mesosoma usually slightly lighter than gaster and head. Mandibles, scapi and tibiae lighter than mesosoma, yellowish red. Structure and setation. Head slightly elongated, with convex sides and straight posterior margin. Terminal segment of maxillary palpi short with length of sixth segment 0.091-0.134 (mean 0.117). Occipital part of head with 14-24 long erected setae. Gena with up to two erected setae, underside of head with 4-8 long erected setae. Mesosomal dorsum with several short to long erected setae (length of the longest seta 0.091-0.143, mean 0.114). Below propodeal spiracle 1-4 erected setae. Masticatory border of mandibles with 8-9 teeth. Antennal scapi with smooth pubescence lacking erected setae. Hind tibiae on external surface in basal parts without or with 1-4 erected setae. Ventral surface of fore femora with 3-6 and mid femora 2-5 erected setae, of hind femora with 2-3 setae close to base of femur, anterior surface of fore coxa with several long erected setae. Pubescence on the whole body and appendages very dense and whitish. Pubescence of clypeus sparse, not covering Clypeus. Surface of gastral tergites distinctly sculptured , first gastral tergite in central part with numerous erected setae. Propodeum in lateral view moderately high and slightly angulated, metanotal groove moderately deep.

Type Material

Seifert (2020) - Holotype plus 4 paratype workers labelled “GER: Kr. Weißwasser 4 km N Steinbach: N 135 30.7.1991, leg. Seifert“; 26 paratype workers from the same locality and date labelling but with nest 082, sample numbers N 005, N 023, N 027, N 029, N 048, N N 206, N 215; depository Staatliches Museum für Naturkunde Görlitz.

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