Apterostigma

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Apterostigma
Temporal range: 20.43–0 Ma Early Miocene – Recent
Apterostigma pilosum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Apterostigma
Mayr, 1865
Type species
Apterostigma pilosum
Diversity
44 species
2 fossil species
(Species Checklist, Species by Country)

Apterostigma pilosum casent0173821 profile 1.jpg

Apterostigma pilosum

Apterostigma pilosum casent0173821 dorsal 1.jpg

Specimen Label

Evolutionary Relationships
Attini

Ochetomyrmex (2 species), Tranopelta (2 species)




Allomerus (8 species), Blepharidatta (4 species), Diaphoromyrma (1 species), Lachnomyrmex (16 species), Wasmannia (11 species)






Acanthognathus (7 species), Colobostruma (16 species), Daceton (2 species), Epopostruma (20 species), Lenomyrmex (7 species), Mesostruma (9 species), Microdaceton (4 species), Orectognathus (29 species)



Paleoattina

Apterostigma
  (44 species)




Myrmicocrypta
  (31 species)



Mycocepurus
  (6 species)




Neoattina


Cyatta
  (1 species)



Kalathomyrmex
  (1 species)






Mycetarotes
  (4 species)



Mycetosoritis
  (2 species)





Cyphomyrmex
  (23 species)




Mycetophylax
  (21 species)




Mycetagroicus
  (4 species)



Acromyrmex (56 species), Atta (20 species), Sericomyrmex (11 species), Trachymyrmex (9 species), Xerolitor (1 species)











Basiceros (9 species), Cephalotes (123 species), Eurhopalothrix (55 species), Octostruma (35 species), Phalacromyrmex (1 species), Pheidole (1,293 species), Pilotrochus (1 species), Procryptocerus (44 species), Protalaridris (7 species), Rhopalothrix (16 species), Strumigenys (859 species), Talaridris (1 species)





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

A genus of fungus growing ants.

At a Glance • Fungus Grower  

 

Identification

AntWeb icon 02.png See images of species within this genus

 

Distribution

Distribution and Richness based on AntMaps

Fossils

Fossils are known from: Dominican amber, Dominican Republic (Burdigalian, Early Miocene).

Biology

Association with Other Organisms

All Associate Records for Genus

Explore Associate Data: All, Drilldown
Click here to show/hide associate data.
Taxon Relationship Associate Type Associate Taxon Associate Relationship Locality Source Notes
Apterostigma auriculatum host diapriid wasp Leucopria parasite www.diapriid.org potential host
Apterostigma dentigerum host fly Pseudogaurax paratolmos parasite Panama Gonzalez et al., 2016
Apterostigma goniodes host ant Megalomyrmex mondaboroides xenobiont Costa Rica Adams et al., 2015

Life History Traits

  • Mean colony size: 27-155 (Greer et al., 2021)
  • Compound colony type: not parasitic (Greer et al., 2021)
  • Nest site: hypogaeic (Greer et al., 2021)
  • Diet class: herbivore (Greer et al., 2021)
  • Foraging stratum: arboreal (Greer et al., 2021)
  • Foraging behaviour: cooperative (Greer et al., 2021)

Castes

Morphology

Worker Morphology

• Antennal segment count: 11 • Antennal club: gradual-3, weak • Palp formula: 3,2 • Total dental count: 8-14 • Spur formula: 0,0 • Eyes: 11-100 ommatidia • Scrobes: absent • Pronotal Spines: absent • Mesonotal Spines: absent • Propodeal Spines: absent; dentiform • Petiolar Spines: absent • Caste: none or weak • Sting: present • Metaplural Gland: present • Cocoon: absent

These characters are collated in the Worker Morphology table.

Karyotype

Species Uncertain

  • 2n = 20; 24; 32, karyotype = 6M+12SM+2A; 24M; 14M+6SM+10ST+2T (Brazil; French Guiana; Panama) (Fadini & Pompolo, 1996; Mariano et al., 2011; Murakami et al., 1998).

All Karyotype Records for Genus

Explore Data: All, Drilldown
Click here to show/hide karyotype data.
Taxon Haploid Diploid Karyotype Locality Source Notes
Apterostigma 20 24 32 6M+12SM+2A; 24M; 14M+6SM+10ST+2T Brazil; French Guiana; Panama Fadini & Pompolo, 1996; Mariano et al., 2011; Murakami et al., 1998
Apterostigma madidiense 23 14M+20SM+10ST+2A Brazil Barros et al., 2013
Apterostigma mayri 24 24M Panama Murakami et al., 1998
Apterostigma steigeri 22 20M+2SM Brazil Barros et al., 2013

Nomenclature

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

  • APTEROSTIGMA [Myrmicinae: Attini]
    • Apterostigma Mayr, 1865: 111. Type-species: Apterostigma pilosum, by monotypy.

References