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Strumigenys robertsoni
| Strumigenys robertsoni | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. robertsoni |
| Binomial name | |
| Strumigenys robertsoni (Bolton, 2000)
| |
The small number of collections of this species suggest it prefers semi-open vegetation, including disturbed areas, and lives in the ground/litter.
Identification
Bolton (2000) - A member of the emarginata complex in the Strumigenys emarginata group. S. robertsoni most closely resembles the West African Strumigenys exunca but the latter is less sculptured and has numerous standing simple hairs present posteriorly on the cephalic dorsum that contrast strongly with the spoon-shaped ground-pilosity.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -27.72698° to -34.4°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Afrotropical Region: Kenya, South Africa, Zimbabwe (type locality), Zimbabwe (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. |
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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. |
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Biology
Castes
Worker
Images from AntWeb
   
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| Holotype of Pyramica robertsoni. Worker. Specimen code casent0900079. Photographer Will Ericson, uploaded by California Academy of Sciences. | Owned by NHMUK, London, UK. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- robertsoni. Pyramica robertsoni Bolton, 2000: 305 (w.) ZIMBABWE. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 126
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 2.3, HL 0.64, HW 0.38, CI 59, ML 0.10, MI 16, SL 0.30, SI 79, PW 0.24, AL 0.61. Characters of emarginata-complex. With head in full-face view ground-pilosity of the dorsum of numerous small spoon-shaped hairs that are very conspicuous; these hairs denser on the clypeal dorsum than elsewhere. Lateral margin of occipital lobe without projecting simple hairs but a number of curved spoon-shaped hairs may break the outline. In profile the spoon-shaped ground-pilosity may be continuous to the occipital margin or the posteriormost transverse row may be somewhat more slender and more elevated, though simple hairs that contrast strongly in shape are not present. Pronotal dorsum with distinct curved spoon-shaped hairs only. Mesonotum with very sparse spoon-shaped ground-pilosity and with 3-4 pairs of long standing hairs that are simple, slightly flattened or weakly remiform, and usually shallowly curved. Pleurae and side of propodeum reticulate to reticulate-punctate everywhere. Pronotal dorsum weakly sculptured.
Type Material
Holotype worker, Zimbabwe: Gwebi, 1971, pitfall trap, acc. 14410 (K. J. Wilson) (The Natural History Museum).
References
- Baroni Urbani, C. & De Andrade, M.L. 2007. The ant tribe Dacetini: limits and constituent genera, with descriptions of new species. Annali del Museo Civico di Storia Naturale “G. Doria”. 99:1-191.
- Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 305, worker described)
References based on Global Ant Biodiversity Informatics
- Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65