Lasius paralienus

Lasius paralienus
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:	paralienus
Species:	L. paralienus
Binomial name
Lasius paralienus Seifert, 1992 Specimen labels

Guiliani et al. (2019) observed this species foraging on extrafloral nectaries of the invasive Reynoutria x bohemica (Polygonaceae) in Tuscany. The habitats examined were river banks and disturbed habitats.

Identification

Seifert and Galkowski (2016) - Palaearctic Lasius s. str. species belonging to the Lasius paralienus species complex. The species in this complex are separable from related species by the combination of low clypeal pubescence distance, low setae numbers on scape and differences in length of maxillary palp segments. Lasius alienus, Lasius psammophilus and Lasius piliferus are the most similar species occurring within the geographic range of the three L. paralienus complex species. L. alienus differs from the other five species by having strongly reduced setae numbers on the metapleuron below the level of the propodeal spiracle. A safe separation of individual workers is possible by a discriminant function considering head width, the length of the terminal maxillary palp segment and clypeal pubescence distance.

Keys including this Species

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

Distribution

Seifert and Galkowski (2016) - Lasius paralienus has a European, north meridional to temperate distribution. In the south it ranges from S France (0.7°W) over all of Italy east to Bosnia and Bulgaria (25°E). The main distribution in Central Europe reaches north to about 52.5°N. North of this line only isolated populations are known in Sweden: Södermanland (59.1°N), Öland (56.7°N) and Gotland (57.4°N). In Germany it ascends to 990 m (at 47.9°N) and at the southern slope of the Alps to 1800 m (at 46.8°N).

Latitudinal Distribution Pattern

Latitudinal Range: 59.065° to 6°.

North Temperate	North Subtropical	Tropical	South Subtropical	South Temperate

• Source: AntMaps

Distribution based on Regional Taxon Lists

Palaearctic Region: Andorra, Austria, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic, France, Germany (type locality), Greece, Hungary, Iberian Peninsula, Italy, Montenegro, Poland, North Macedonia, Romania, Russian Federation, Slovenia, Spain, Sweden, Switzerland.

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.

Habitat

Borowiec and Salata (2022) - Prefers xerothermic habitats, open grasslands, rarely occurs in moist meadows or in Mediterranean oak forests. Prefers low altitudes from sea level up to 500 m, in more northern areas it is common on xerothermic grasslands between 500 to 950 m.

Biology

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 ant Lasius distinguendus (a temporary parasite) (de la Mora et al., 2021; Seifert, 2018).
• This species is associated with the aphids Aphis craccivora, Aphis fabae, Aphis frangulae, Aphis galliiscabri, Aphis gossypii, Aphis rumicis, Aphis umbrella, Brachycaudus cardui, Chaitophorus longisetosus, Chaitophorus populeti, Chaitophorus populialbae, Chaitophorus remaudierei, Chaitophorus truncates, Cinara palaestinensis, Cinara palaestinesis, Cinara pini, Hyadaphis foeniculi, Hyalopterus pruni, Myzus persicae and Pterochloroides persicae (Saddiqui et al., 2019 and included references).

Flight Period

							X	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.

Nomenclature

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

• paralienus. Lasius (Lasius) paralienus Seifert, 1992b: 16, figs. 5, 6, 12 (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

Borowiec and Salata (2022) - Small to moderately large, HL 0.724-1.081 (mean 0.900), HW 0.640- 1.029 (mean 0.839), ML 0.87-1.06. Scape moderately elongate, SL 0.695-1.042 (mean 0.863). Color. Body and femora concolours medium to dark brown. Mandibles, scapi and tibiae light yellowish brown. Structure and setation. Head slightly elongated, with convex sides and straight posterior margin. Terminal segment of maxillary palpi long with length of sixth segment 0.142-0.176 (mean 0.160). Occipital part of head with 12-24 erected setae. Gena with up to two erected setae, underside of head with 2-6 erected setae. Mesosomal dorsum with several long erected setae (length of the longest seta 0.075-0.134, mean 0.109). Below propodeal spiracle 3-5 erected setae. Masticatory border of mandibles with 8-9 teeth. Antennal scapi with smooth pubescence lacking erected setae or at most with 2 erected setae. Hind tibiae on external surface in basal parts without or with 1-3 erected setae. Hind tibiae on external surface in basal parts without or with 1-3 erected setae. Ventral surface of fore femora with 3-5 and mid femora 2-4 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 dense, mostly covering surface of clypeus. Surface of gastral tergites distinctly sculptured, first gastral tergite in central part with numerous erected setae. Propodeum in lateral view rather low and obtuse, metanotal groove moderately deep.

Type Material

Seifert and Galkowski (2016) - Holotype labelled "Germania: Kr. Bautzen, 2 km S Weißenberg; N066 11.7.1991, leg. Seifert", "Lasius paralienus Seifert Holotypus", "GBIF-D/FoCol 0751 specimen + label data documented"; 4 paratype workers with the same site labelling and "Lasius paralienus Seifert Paratypus"; material stored in Senckenberg Museum für Naturkunde Görlitz. The type locality is situated at 51.1752°N, 14.6551°E and 258 m.

References

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