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Strumigenys racabura
| Strumigenys racabura | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. racabura |
| Binomial name | |
| Strumigenys racabura Bolton, 2000
| |
Known from rainforest habitats, specimens have been collected in litter-samples and from rotten logs.
Identification
Bolton (2000) - A member of the mayri complex in the Strumigenys mayri-group. See notes under Strumigenys montu. The sculpture of the postpetiole disc varies considerably in this species, as in Strumigenys mayri. Most individuals have weak punctulate sculpture, generally with a few feeble costulae at least anteriorly. Some from New Guinea have quite strong reticulate-punctate sculpture, almost as strong as the sculpture on the petiole node. Others, especially Australian specimens, tend to have the postpetiole sculpture reduced and faint or even effaced in the centre of the disc.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -3.549999952° to -6.733329773°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Australasian Region: Australia.
Indo-Australian Region: New Guinea.
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.
- racabura. Strumigenys racabura Bolton, 2000: 890 (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 2.0, HL 0.54, HW 0.36, CI 67, ML 0.23, MI 43, SL 0.34, SI 94, PW 0.23, AL 0.52. Characters of the mayri-complex. Preapical tooth spiniform, equal to or slightly longer than maximum width of mandible. Cephalic dorsum with 4-6 erect hairs along the occipital margin, the pair nearest the midline usually curved or weakly sinuate; a similar pair present at level of highest point of vertex. Preocular notch present (generally somewhat deeper and more incised in Australian than in New Guinean material); ventral surface of head with a broad shallow preocular transverse impression posterior to the narrowly and deeply incised postbuccal groove. Pronotal humeral hair flagellate, pronotum otherwise without erect hairs; mesonotum with one pair of erect flagellate hairs. Dorsal alitrunk reticulate-punctate. Dorsal surfaces of waist segments and first gastral tergite with flagellate hairs. Katepisternum smooth, metapleuron with a smooth patch anteriorly; posterior to this the side usually faintly reticulate-punctate but a few specimens with side mostly smooth. Propodeum armed with a pair of short straight spines, elevated at about 45°, not markedly upcurved, the length of one of which is equal to or slightly greater than distance separating their bases. Dorsal (outer) surface of hind basitarsus with 1-2 long erect flagellate hairs. Petiole in profile with anterior face of node shorter than length of dorsum, in dorsal view petiole node as broad as long or slightly broader than long. Disc of postpetiole superficially sculptured with fine punctulae or costulae (almost smooth in Australian specimens), usually not as densely sculptured as dorsum of petiole node. In dorsal view basigastral costulae about as long as disc of postpetiole.
Paratypes. TL 2.0, HL 0.56-0.57, HW 0.38, CI 67-68, ML 0.24, MI 42-43, SL 0.34-0.35, SI 89-92, PW 0.23, AL 0.56 (2 measured).
Dimensions of non-paratypic workers. HL 0.55-0.60, HW 0.37-0.41, CI 65-71, ML 0.24-0.26, MI 42-46, SL 0.34-0.36, SI 87-94 (15 measured).
Type Material
Holotype worker, Papua New Guinea: Ambunti, 4.13°S, 142.49°E, 50 m., 2.vii.1980, ex rotten log, lowland rainforerst, #4651 (P. S. Ward) (The Natural History Museum). Paratypes. 2 workers with same data as holotype (University of California, Davis).
- Holotype, worker, Ambunti, Papua New Guinea, The Natural History Museum.
- Paratype, 2 workers, Ambunti, Papua New Guinea, Univ. of California (Davis).
References
- Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 890, 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.