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Strumigenys heliani
| Strumigenys heliani | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. heliani |
| Binomial name | |
| Strumigenys heliani Fisher, 2000
| |
A specimen of this species was found in a rainforest litter sample.
Identification
A member of the abdera complex in the Strumigenys arnoldi-group.
Keys including this Species
Distribution
Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar (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 Strumigenys heliani. Worker. Specimen code casent0005551. Photographer April Nobile, uploaded by California Academy of Sciences. | Owned by MCZ, Cambridge, MA, USA. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- heliani. Strumigenys heliani Fisher, in Bolton, 2000: 632, figs. 384, 411 (w.) MADAGASCAR.
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 2.6, HL 0.56, HW 0.63, CI 113, ML 0.24, MI 42, SL 0.31, SI 49, PW 0.35, AL 0.62. Characters of abdera-complex. Mandible with 2 preapical teeth, the distal smaller than the proximal. A small denticle is present at base of apicoventral fork tooth. Hairs on dorsum of head posterior of frontal lobes and along upper scrobe margin are similar in shape to hairs on leading edge of scape. Leading edge of scape greatly expanded, forming a dorsoventrally flattened convex lamella with the widest portion in apical third. In profile, promesonotal dorsum convex and bluntly marginate laterally; propodeal dorsum convex anteriorly, sloping posteriorly to the declivity. Mesopleural gland conspicuous and set in a deep concave impression. Ground-pilosity of dorsum of head posterior to frontal lobes consisting of rows of spatulate to spoon-shaped hairs. Erect hairs absent from head, alitrunk, and petiole. Hairs on gaster clavate. Head, alitrunk and petiole reticulate-punctate. Pleurae and sides of propodeum smooth except for peripheral punctures, which are most prominent on dorsal margin. Postpetiole disc finely longitudinally costulate-punctulate. In profile the petiole with a well developed spongiform lamella. Postpetiole with well developed lateral and ventral spongiform lobes. Basigastral costulae well developed and sharply defined, extending across the basal third of gastral tergite, remainder of gaster more or less smooth and shiny. Propodeal tooth bluntly triangular and incorporated in the lamella, the latter a narrow strip. Colour pale orange-brown.
Paratype. TL 2.4-2.5, HL 0.53-0.55, HW 0.61-0.63, CI 110-118, ML 0.23-0.26, MI 44-47, SL 0.27-0.30, SI 44-49, PW 0.33-0.37, AL 0.58-0.61 (4 measured). As holotype.
Type Material
Holotype worker, Madagascar: Provo Toamasina, F.C. Sandranantitra, 18°02.9'S, 49°05.5'E, 450 m., 18-21.i.1999, sifted litter (leaf mold, rotten wood) #101 (13)-1 (H. J. Ratsirarson) (Museum of Comparative Zoology).
Paratypes. 2 worker with same data as holotype; 2 workers with SAMCe data as holotype but coded #101 (14)-1 (The Natural History Museum, South African Museum).
References
- Fisher, B.L. 2000. The Malagasy fauna of Strumigenys. Pp. 612-696 in: Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 632, worker described)
References based on Global Ant Biodiversity Informatics
- Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65
- Fisher B. L. 2003. Formicidae, ants. Pp. 811-819 in: Goodman, S. M.; Benstead, J. P. (eds.) 2003. The natural history of Madagascar. Chicago: University of Chicago Press, xxi + 1709 pp.