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Strumigenys retothra
| Strumigenys retothra | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. retothra |
| Binomial name | |
| Strumigenys retothra Bolton, 2000
| |
Known from a few rainforest collections, one from a tree trunk and the other from a rotten log.
Identification
Bolton (2000) - A member of the Strumigenys loriae-group. In the type-series the postpetiole disc is smooth, but the non-paratypic series from near Wau has fine punctulate sculpture on the disc. However, this series retains the other diagnostic features listed above.
For notes on broader relationships within the group see under Strumigenys kyroma. Whether retothra shows polymorphism similar to that seen in Strumigenys loriae cannot be confirmed as only few workers are known; all are large and about the same size. If they represent the upper end of the size range of retothra workers then the species differs from all its close relatives (kyroma, loriae, Strumigenys festigona) by its lack of standing hairs on the pronotum, except for the humeral pair, and lack of a well developed projection on the side of the head in front of the preocular impression, at least in individuals within the same size range (HW ca 1.00-1.30).
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -5.11° to -7.333330154°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Indo-Australian Region: New Guinea (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
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- retothra. Strumigenys retothra Bolton, 2000: 865 (w.) NEW GUINEA.
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 4.4, HL 1.32, HW 1.20, CI 91, ML 0.60, MI 45, SL 0.80, SI 67, PW 0.46, AL 1.20. Closely related to Strumigenys kyroma; answering the description of that species except as follows.
1 Preapical tooth on mandible short and blunt, inclined toward the apicodorsal tooth.
2 In full-face view side of head in front of preocular impression merely forms a broadly rounded low blunt tumulus.
3 Pronotum without a pair of standing hairs on its dorsum close to the anterior margin (i.e. the humeral hairs are the only ones present on the pronotum).
4 Bulla of femoral gland on hind leg minute or invisible, much smaller than the conspicuous bulla of the hind tibial gland.
5 Head, alitrunk, waist segments and gaster uniformly dark brown to blackish brown. Legs dull brownish yellow, much lighter than body and strongly contrasting with it.
Paratype. TL 4.3, HL 1.32, HW 1.17, CI 89, ML 0.58, MI 44, SL 0.80, SI 68, PW 0.48, AL 1.20.
Type Material
Holotype worker, Papua New Guinea: 6 km. 5 Telefomin, 5.11°S, 141.38°E, 4.vii.1980, 1500 m., on tree trunk, gully rainforest, #4672 (P. S. Ward) (The Natural History Museum). Paratype. 1 worker with same data as holotype (University of California, Davis).
References
- Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 865, 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
- Janda M., G. D. Alpert, M. L. Borowiec, E. P. Economo, P. Klimes, E. Sarnat, and S. O. Shattuck. 2011. Cheklist of ants described and recorded from New Guinea and associated islands. Available on http://www.newguineants.org/. Accessed on 24th Feb. 2011.