Goniomma

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Goniomma
Goniomma collingwoodi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Stenammini
Genus: Goniomma
Emery, 1895
Type species
Aphaenogaster blanci, now Goniomma collingwoodi
Diversity
10 species
(Species Checklist, Species by Country)

Goniomma collingwoodi casent0101190 profile 1.jpg

Goniomma collingwoodi

Goniomma collingwoodi casent0101190 dorsal 1.jpg

Specimen Label

Evolutionary Relationships
Myrmicinae

Myrmicini
  (2 genera)




Pogonomyrmecini
  (3 genera)



Stenammini


Stenamma
  (85 species)




Novomessor
  (3 species)



Veromessor
  (11 species)






Aphaenogaster
  (228 species)





Aphaenogaster
  (228 species)



Messor
  (163 species)





Goniomma
  (10 species)



Oxyopomyrmex
  (12 species)








Solenopsidini
  (22 genera)




Attini
  (49 genera)



Crematogastrini
  (65 genera)







Based on Ward et al., 2014

Granivorous ants with small colonies. Some species are known to have specialzed diets that focus on particular seeds.

Identification

Fossils

Jessen (2020) - Extant Goniomma gyne are smaller, BL about 4–5 mm (Espadaler 1986), and their funiculus is significantly shorter, not extending the occipital margin of head. The fossil specimens have not been assigned to the genera Aphaenogaster or Paraphaenogaster because of their combination of a CI well over 100, their wing venation pattern, their weak veining and their unarmed (most likely) or slightly armed propodeum. They are not assigned to the genus Messor, since the head in this genus narrows towards the front (clearly visible in the paratype). In most extant Messor species, the head width is not reduced towards the front and the outer margins of the mandibles are not strongly curved.

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

 

Distribution

Distribution and Richness based on AntMaps

Fossils

Fossils are known from: Enspel Formation, Rhineland-Palatinate, Germany (Oligocene).

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
Goniomma hispanicum host fungus Myrmicinosporidium durum pathogen Portugal Gonçalves et al., 2012.

Life History Traits

  • Mean colony size: ~360 (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: subterranean/leaf litter (Greer et al., 2021)
  • Foraging behaviour: solitary (Greer et al., 2021)

Castes

Morphology

Worker Morphology

Male Morphology

• Antennal segment count: 12 • Antennal club: 0, gradual, 4, weak • Palp formula: 4,3 • Total dental count: 3-6 • Spur formula: 1 simple, 1 simple • Eyes: >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

Nomenclature

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

  • GONIOMMA [Myrmicinae: Pheidolini]
    • Goniomma Emery, 1895c: 298 [as subgenus of Stenamma]. Type-species: Aphaenogaster blanci, by subsequent designation of Wheeler, W.M. 1911f: 164.
    • Goniomma subgenus of Oxyopomyrmex: Wheeler, W.M. 1910g: 140.
    • Goniomma raised to genus: Emery, 1908e: 460; Forel, 1917: 241.

Description

Fossils

Queen

Jessen (2020) - For fossil Goniomma only: BL 7–8 mm. Head wider than long, it becomes narrower towards the front. Antenna 12-segmented with weak 4-segmented club. Scape hardly bended at base, clearly extending occipital margin. Mandibles triangular, with 6–7 triangular-shaped teeth. Apical tooth bigger and curved. Eyes located below heads mid length. Anterior clypeal margin fairly straight; it shows no distinct convex line. Alitrunk large, wide and arched. Propodeal spines unclear. Wing venation with closed cell mcu, and 1+2r. Cell mcu barely trapezoid, almost square. Vein 1RS remarkably short. Veins rs-m, 2RS+M, 2-3RS and 5RS and 3M are thin and weakly sclerotized. Therefore cell rm is strongly reduced. Sclerotization of veins in general weak. Legs brown. Body darker than legs. Petioles anterior face is continuously ascending, posteriorly it is steeply descending. Top of petiolar node is not rounded. Helcium low, postpetiole wide, only slightly constricted towards gaster. First gastral tergite distinctly longer than the others.

References

Reyes- López, J.L., Brady, S.G., Schultz, T.R. 2022. Out of the temperate zone: A phylogenomic test of the

biogeographical conservatism hypothesis in a contrarian clade of ants. Journal of Biogeography 00, 1-14 (doi:10.1111/jbi.14462).