Strumigenys orthanetes

Strumigenys orthanetes
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Attini
Genus:	Strumigenys
Species:	S. orthanetes
Binomial name
Strumigenys orthanetes Bolton, 2000 Specimen Labels

The type specimens were found in a rotten log in a rainforest.

Identification

Bolton (2000) - A member of the Strumigenys mayri-group. The presence of a preapical denticle on the mandible and a pair of erect hairs on the pronotal dorsum (as well as the humeral pair) will also separate orthanetes from Strumigenys paranetes and Strumigenys dysanetes, where both are absent. Also, orthanetes has much longer mandibles and scapes than dysanetes (compare measurements) and appears always to be lighter in colour than paranetes as the latter is uniformly dark brown to blackish brown. The mandibular index in orthanetes averages higher (MI 47-51) than in anetes and paranetes (combined MI 44-47).

Keys including this Species

• Key to Australian Strumigenys Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: -16.25° to -19.01543334°.

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.

Nomenclature

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

• orthanetes. Strumigenys orthanetes Bolton, 2000: 980, figs. 533, 548 (w.) AUSTRALIA.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Holotype. TL 2.9, HL 0.80, HW 0.53, CI 66, ML 0.38, MI 48, SL 0.52, SI 99, PW 0.30, AL 0.75. Answering the description of anetes but differing as follows. Mandible with a minute denticle close to the apicodorsal tooth. Pronotal dorsum with a pair of standing hairs located posterior to the humeral pair. Lamella on propodeal declivity broad, its posterior (free) margin convex. Head and alitrunk dull brownish yellow, gaster somewhat darker.

Paratypes. TL 2.8-2.9, HL 0.77-0.80, HW 0.51-0.53, CI 66-68, ML 0.38-0.40, MI 48-51, SL 0.49-0.54, SI 96-104, PW 0.29-0.30, AL 0.73-0.75 (5 measured).

Dimensions of non-paratypic workers. TL 2.5-2.7, HL 0.72-0.78, HW 0.48-0.53, CI 67-70, ML 0.34-0.39, MI 47-50, SL 0.45-0.52, SI 90-98, PW 0.27-0.29, AL 0.66-0.70 (15 measured).

Type Material

Holotype worker, Australia: Qld, Mt Haig, 1150 m., 17.06S, 145.36E, 29.x.1976, ex rotten log, rainforest, accession no. 76.287, ANIC ants vial 37.224 (R. W. Taylor & T. A. Weir) (Australian National Insect Collection). Paratypes. 8 workers with same data as holotype (ANIC, The Natural History Museum).

• Holotype, worker, Mt. Haig, Queensland, Australia, Taylor,R.W. & Weir,T.A., ANIC32-017781, Australian National Insect Collection.
• Paratype, 6 workers, Mt. Haig, Queensland, Australia, Taylor,R.W. & Weir,T.A., ANIC32-017782, Australian National Insect Collection.
• Paratype, 2 workers, Mt. Haig, Queensland, Australia, The Natural History Museum.

References

• Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 980, figs. 533, 548 worker described)

References based on Global Ant Biodiversity Informatics

• Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65