Stigmacros occidentalis

Stigmacros occidentalis
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Formicinae
Tribe:	Melophorini
Genus:	Stigmacros
Species:	S. occidentalis
Binomial name
	Stigmacros occidentalis; (Crawley, 1922) Specimen Labels
Synonyms
	Stigmacros armstrongi McAreavey, 1957;

Stigmacros occidentalis, with small teeth on the side of the node, and Stigmacros clivispina, similar to the preceding but without teeth, are found in the Perth area and the jarrah forest south of Perth (Heterick 2009).

Photo Gallery

A tiny Stigmacros occidentalis worker found in leaf litter from the Pilbara region in Western Australia. Photo by Farhan Bokhari, 23 June 2012.

Identification

Keys including this Species

Key to Stigmacros of the southwestern Australian Botanical Province

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: -31.56666946° to -31.56666946°.


North Temperate	North Subtropical	Tropical	South Subtropical	South Temperate

Source: AntMaps

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps

Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.

Biology

Castes

Images from AntWeb


Specimen code antweb1008328. .

Nomenclature

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

occidentalis. Acantholepis (Stigmacros) occidentalis Crawley, 1922c: 30 (w.) AUSTRALIA.
- McAreavey, 1957: 44 (q.).
- Combination in Stigmacros (Cyrtostigmacros): McAreavey, 1957: 44.
armstrongi. Stigmacros (Cyrtostigmacros) armstrongi McAreavey, 1957: 52, figs. 180-183 (w.q.) AUSTRALIA.
- Junior synonym of occidentalis: Heterick, 2021: 18.

Type Material

Acantholepis (Stigmacros) occidentalis: Syntype, worker(s), Murray River, Western Australia, Australia, Oxford University Museum of Natural History.
Stigmacros (Cyrtostigmacros) armstrongi: Syntype, 8 workers, Nyngan, New South Wales, Australia, Armstrong, ANIC32-017846, Australian National Insect Collection.
Stigmacros (Cyrtostigmacros) armstrongi: Syntype, worker(s), Nyngan, New South Wales, Australia, Museum Victoria, Melbourne.

Taxonomic Notes

Heterick (2021): An examination of ANIC type specimens for S. occidentalis and S. armstrongi reveals the two ants are identical. Stigmacros occidentalis is the senior name.

Description

References

Crawley, W. C. 1922e. New ants from Australia (concluded from vol. ix. p. 449). Ann. Mag. Nat. Hist. 9(10): 16-36 (page 30, worker described)
Heterick, B. E. 2009. A guide to the ants of South-western Australia. Records of the Western Australian Museum, Supplement 76: 1-206.
Heterick, B.E. 2021. A guide to the ants of Western Australia. Part I: Systematics. Records of the Western Australian Museum, Supplement 86, 1-245 (doi:10.18195/issn.0313-122x.86.2021.001-245).
Heterick, B.E. 2022. A guide to the ants of Western Australia. Part II: Distribution and biology. Records of the Western Australian Museum, supplement 86: 247-510 (doi:10.18195/issn.0313-122x.86.2022.247-510).
McAreavey, J. 1957. Revision of the genus Stigmacros Forel. Mem. Natl. Mus. Vic. 21: 7-64 (page 44, Combination in Stigmacros (Cyrtostigmacros))
McAreavey, J. 1957. Revision of the genus Stigmacros Forel. Mem. Natl. Mus. Vic. 21: 7-64 (page 44, queen described)

References based on Global Ant Biodiversity Informatics

Taylor R. W. 1987. A checklist of the ants of Australia, New Caledonia and New Zealand (Hymenoptera: Formicidae). CSIRO (Commonwealth Scientific and Industrial Research Organization) Division of Entomology Report 41: 1-92.