Strumigenys chareta

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

The type material was collected from leaf litter berleasate.

Identification

Bolton (2000) - A member of the rofocala complex in the Strumigenys godeffroyi-group. Three species of the rofocala-complex are indigenous in New Caledonia, Strumigenys aenigma, Strumigenys lamia and Strumigenys chareta. Of these aenigma is the only one to possess erect fine hairs on the dorsal surfaces of the middle and hind femora. The propodeal lamella is also broader in aenigma than in the other two species and has its posterior (free) margin at least straight, usually shallowly convex; in chareta and lamia the lamella is narrow and shallowly concave. Strumigenys chareta has mandibles that average longer than in aenigma (MI 48-52 as opposed to MI 43-46) but chareta usually has a distinct pair of short erect hairs at about the highest point of the vertex and has scapes that average longer (SI 86-93 as opposed to SI 82-85 in aenigma.

Strumigenys lamia has shorter mandibles and scapes (MI 42-46, SI 76-81) than either aenigma or chareta, and tends to have a somewhat broader head (CI 71-76 as opposed to CI 67-72 in the other two). Like aenigma it lacks erect hairs at the highest point of the vertex and like chareta it has a narrow propodeal lamella with a concave posterior (free) margin.

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: -22.11° to -22.18333054°.

North Temperate	North Subtropical	Tropical	South Subtropical	South Temperate

• Source: AntMaps

Distribution based on Regional Taxon Lists

Australasian Region: New Caledonia (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.

Castes

Worker

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Nomenclature

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

• chareta. Strumigenys chareta Bolton, 2000: 957 (w.) NEW CALEDONIA.

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 2.5, HL 0.62, HW 0.43, CI 69, ML 0.31, MI 50, SL 0.38, SI 88, PW 0.27, AL 0.65. With characters of rofocala-complex. Apicoscrobal hair short flagellate. Cephalic dorsum with a single pair of short erect hairs near highest point of vertex and usually also with 2-4 standing hairs along occipital margin; the latter may be straight or curve anteriorly in their upper halves. Ground-pilosity very narrowly linear spatulate and curved. Pronotal humeral hair flagellate, very long and fine; pronotal dorsum otherwise without erect hairs. Mesonotum with a single pair of erect fine flagellate hairs. Pronotal dorsum finely reticulate-punctulate and with traces of weak longitudinal rugulae; mesonotal and propodeal dorsa more strongly reticulate-punctate. Dorsal surfaces of middle and hind femora without erect sub flagellate hairs. Propodeal declivity with a narrow lamella, its posterior (free) margin shallowly concave. Katepisternum smooth, metapleuron and side of propodeum with an extensive smooth shining patch. Dorsum of petiole node finely reticulate-punctate; disc of postpetiole smooth except for near lateral and posterior margins where weak punctulate sculpture is present. Hairs on first gastral tergite erect and fine, sub flagellate to flagellate.

Paratypes. TL 2.4-2.5, HL 0.58-0.63, HW 0.41-0.45, CI 68-72, ML 0.30-0.31, MI 48-52, SL 0.35-0.40, SI 86-93, PW 0.25-0.27, AL 0.60-0.64 (5 measured).

Type Material

Holotype worker, New Caledonia: Sud, Noumea, Riv. Bleue, 22.xi.1995, RB10L, NC95-026 (Deharveng & Bedos) (The Natural History Museum). Paratypes. 1 worker with same data as holotype; 1 worker, New Caledonia: Mt Koghis, 450 m., 18.ii.1977, 22°11′0″S 166°31′0″E, leaf litter berleasate, #2255-2; 2 workers, Mt. Koghis, 750 m., 12.ii.1977, 22°11′0″S 166°31′0″E, leaf litter berlesate, moss forest, #2247-3 (P. S. Ward) (BMNH, University of California, Davis, Australian National Insect Collection).

• Paratype, 1 worker, Mt. Koghis, New Caledonia, Ward,P.S., ANIC32-017759, Australian National Insect Collection.

References

• Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 957, worker described)

References based on Global Ant Biodiversity Informatics

• Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65
• CSIRO Collection
• Jennings J. T., L. Krogmann, and C. Burwell. 2013. Review of the hymenopteran fauna of New Caledonia with a checklist of species. Zootaxa 3736(1): 1-53.