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Species: Tetramorium immigrans   Santschi, 1927 

Classification:
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Current Valid Name:



Taxonomic History (provided by Barry Bolton, 2022)

Tetramorium caespitum var. immigrans Santschi, 1927b PDF: 54 (w.) CHILE. Neotropic. Primary type information: Primary type material: lectotype worker (by designation of Wagner et al., 2017 PDF: 120). Primary type locality: lectotype Chile: Valparaiso (Miss Edwards). Primary type depository: NHMB. Secondary type information: Secondary type material: 7 paralectotype workers. Secondary type locality: same as for lectotype. Secondary type depository: NHMB. AntCat AntWiki

Taxonomic history

Lectotype designation: Wagner et al., 2017 PDF: 120.
// Distribution

Distribution:

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

Distribution Notes:

This Ant is wildy spread across Virginia and can be found all over North America

Identification:

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


Also this ant can be comonly mistaken as Tetramorium caespitum one big difference you can find is the size of the mandibles on Tetramorium immigrans they have smaller mandibles compared to their cousin Tetramourium caespitum 

Specimen Habitat Summary

Found most commonly in these habitats: 20 times found in on swimming pool surface, 12 times found in urban, 8 times found in shrub steppe, 2 times found in prairie near irrigation canal, 7 times found in low gambel oak scrub, 6 times found in city, 5 times found in roadside, 1 times found in Recovering clearcut, 1 times found in in wet clay, 2 times found in backyard, ...

Found most commonly in these microhabitats: 27 times under stone, 2 times nest in loose soil around prairie dog burrow, 5 times foragers, 7 times ex litter and soil, 5 times sidewalk, 5 times on ground, 1 times under exposed rock, 2 times nest under stone, 2 times ants found under rock, 1 times active foragers on tree, ground, 3 times strays, ...

Collected most commonly using these methods: 70 times search, 32 times hand collecting, 24 times Bay Area Ant Survey (BAAS), 8 times direct collection, 7 times miniWinkler, 1 times mixed, 2 times cookie bait, 1 times pan trap, 1 times 6L sifted litter, extracted in Winkler sack over 60 hours, 1 times Winkler, 1 times Davis sifter, ...

Elevations: collected from 1 - 2140 meters, 659 meters average

Collect Date Range: collected between 1965-08-15 and 2021-06-22

Type specimens: Lectotype of Tetramorium caespitum immigrans: casent0913997; Not Provided: casent0742353



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