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Species: Tetramorium immigrans   Santschi, 1927 

Classification:
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See Also:

Tetramorium immigrans_cf

Taxonomic History (provided by Barry Bolton, 2020)

Tetramorium caespitum var. immigrans Santschi, 1927b PDF: 54 (w.) CHILE. Neotropic. Secondary type information: Valparaíso (Chile), 33.05° S, 71.61° W, 18 m, leg. Edwards, 1926. Type notes: Lectotype designation. Worker of middle card closerto needle than second worker, labeled "TYPE [–] "ChiliValparaiso, Miss Edwards" [–] "Tetramorium caespitum Limmigrans Sant". SANTSCHI det. 19 "26" [–] SammlungDr. F. Santschi Kairouan", designated as lectotype(Fig. 19). Lectotype worker and seven paralectotype workersin Naturhistorisches Museum Basel (Switzerland). AntCat AntWiki

Taxonomic history

Junior synonym of Tetramorium caespitum: Bolton, 1979 PDF: 171; Radchenko, 2016: 244.
As species: Wagner et al., 2017 PDF: 120 (redescription).

Distribution:

  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Canada, Chile, United States
    Europe: Bulgaria, Croatia, Czech Republic, Spain, Switzerland
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Nearctic, Neotropical, Palearctic

Identification:

Tuft of hair on gula present, situated behind head. Not present in Tetramorium tsushimae.

Specimen Habitat Summary

Found most commonly in these habitats: 12 times found in urban, 8 times found in shrub steppe, 6 times found in city, 5 times found in roadside, 1 times found in Recovering clearcut, 2 times found in backyard, 2 times found in in semi-damp exposed sandy soil, 1 times found in in wet clay, 1 times found in Pseudotauga Quercus forest, 4 times found in suburban, ...

Found most commonly in these microhabitats: 20 times under stone, 3 times foragers, 5 times sidewalk, 4 times on road, 2 times on flagstones, 2 times ants found under rock, 1 times active foragers on tree, ground, 2 times nest under stone, 1 times under exposed rock, 3 times strays, 4 times ground nest, ...

Collected most commonly using these methods: 57 times search, 24 times Bay Area Ant Survey (BAAS), 26 times hand collecting, 8 times direct collection, 1 times mixed, 2 times cookie bait, 1 times pan trap, 1 times Winkler, 1 times Davis sifter, 1 times Hand, 1 times observation, ...

Elevations: collected from 1 - 2140 meters, 533 meters average

Collect Date Range: collected between 1965-08-15 and 2020-05-17

Type specimens: Lectotype of Tetramorium caespitum immigrans: casent0913997



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