Formicoxenus

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Formicoxenus
Formicoxenus nitidulus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Alliance: Formicoxenus genus group
Genus: Formicoxenus
Mayr, 1855
Type species
Myrmica nitidula, now Formicoxenus nitidulus
Diversity
7 species
(Species Checklist, Species by Country)

Formicoxenus nitidulus casent0173159 profile 1.jpg

Formicoxenus nitidulus

Formicoxenus nitidulus casent0173159 dorsal 1.jpg

Specimen Label

Synonyms
Evolutionary Relationships



Cardiocondyla



Ocymyrmex






Nesomyrmex



Xenomyrmex





Terataner




Atopomyrmex



Cataulacus










Carebara



Diplomorium






Melissotarsus



Rhopalomastix






Calyptomyrmex



Tetramorium





Cyphoidris



Dicroaspis










Aretidris



Vollenhovia





Dacetinops



Indomyrma








Crematogaster



Meranoplus






Lophomyrmex




Adlerzia



Recurvidris






Stereomyrmex




Trichomyrmex





Eutetramorium




Royidris




Malagidris



Vitsika








Huberia



Podomyrma





Liomyrmex



Metapone













Kartidris



Mayriella





Tetheamyrma




Dacatria



Proatta









Dilobocondyla



Secostruma






Acanthomyrmex



Myrmecina





Perissomyrmex



Pristomyrmex









some Lordomyrma



Propodilobus





Lasiomyrma




[some Lordomyrma




Ancyridris



some Lordomyrma









Paratopula




Poecilomyrma




Romblonella



Rotastruma








Gauromyrmex



Vombisidris





Temnothorax




Harpagoxenus




Formicoxenus



Leptothorax













Based on Ward et al. (2014) and Blaimer et al. (2018).

Identification

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Keys including this Genus

 

Keys to Species in this Genus

Distribution

Distribution and Richness based on AntMaps

Biology

Association with Other Organisms

All Associate Records for Genus

Explore Associate Data: All, Drilldown
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Taxon Relationship Associate Type Associate Taxon Associate Relationship Locality Source Notes
Formicoxenus chamberlini xenobiont ant Manica invidia host Wheeler (1904)
Formicoxenus diversipilosus xenobiont ant Formica obscuripes host
Formicoxenus hirticornis xenobiont ant Formica ciliata host
Formicoxenus hirticornis xenobiont ant Formica integroides host needs confirmation
Formicoxenus hirticornis xenobiont ant Formica obscuripes host
Formicoxenus hirticornis xenobiont ant Formica ravida host
Formicoxenus nitidulus xenobiont ant Formica aquilonia host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Formica exsecta host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Formica lugubris host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Formica pisarskii host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Formica polyctena host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Formica pratensis host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Formica rufa host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Formica truncorum host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Formica uralensis host Holldobler & Wilson 1990; Busch 2001; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Polyergus rufescens host Wilson 1971; Martin et al. 2007
Formicoxenus nitidulus xenobiont ant Tetramorium caespitum host Wilson 1971; Martin et al. 2007
Formicoxenus provancheri xenobiont ant Myrmica fracticornis host
Formicoxenus provancheri xenobiont ant Myrmica incompleta host
Formicoxenus quebecensis guest ant Myrmica alaskensis host

Life History Traits

  • Mean colony size: "a few" to ~100 (Greer et al., 2021)
  • Compound colony type: xenobiosis (Greer et al., 2021)
  • Nest site: hypogaeic (Greer et al., 2021)
  • Diet class: omnivore (Greer et al., 2021)
  • Foraging stratum: subterranean/leaf litter (Greer et al., 2021)

Castes

Morphology

Worker Morphology

• Antennal segment count: 11 • Antennal club: 3 • Palp formula: 5,3; 4,3 • Total dental count: 5-6 • Spur formula: 0,0 • Eyes: 11-100 ommatidia • Pronotal Spines: absent • Mesonotal Spines: absent • Propodeal Spines: dentiform • Petiolar Spines: absent • Caste: none or weak • Sting: present • Metaplural Gland: present • Cocoon: absent

Male Morphology

 • Antennal segment count 12 • Antennal club 0 in alates; gradual in ergatoids • Palp formula 5,3; 4,3 • Total dental count 0-4 • Spur formula 0, 0 • Caste alates/intermediates/ergatoids

Karyotype

All Karyotype Records for Genus

Explore Data: All, Drilldown
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Taxon Haploid Diploid Karyotype Locality Source Notes
Formicoxenus chamberlini 28 USA Buschinger & Francoeur, 1983; Francoeur et al., 1985; Fischer, 1987 as ''Symmyrmica chamberlini''
Formicoxenus nitidulus 15 France Buschinger et al., 1980; Francoeur et al., 1985; Fischer, 1987
Formicoxenus provancheri 11 22 Canada Buschinger et al., 1980; Fischer, 1987 as ''Leptothorax provancheri''
Formicoxenus quebecensis 28 Canada Francoeur et al., 1985; Fischer, 1987

Nomenclature

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

  • FORMICOXENUS [Myrmicinae: Formicoxenini]
    • Formicoxenus Mayr, 1855: 413. Type-species: Myrmica nitidula, by monotypy.
    • Formicoxenus junior synonym of Stenamma: Mayr, 1863: 422; Roger, 1863b: 25.
    • Formicoxenus revived status as genus: André, 1882c: 273.
    • Formicoxenus senior synonym of Symmyrmica: Francoeur, Loiselle & Buschinger, 1985: 347.
  • SYMMYRMICA [junior synonym of Formicoxenus]
    • Symmyrmica Wheeler, W.M. 1904a: 3. Type-species: Symmyrmica chamberlini, by monotypy.
    • Symmyrmica junior synonym of Formicoxenus: Francoeur, Loiselle & Buschinger, 1985: 347.

References