.jpg){kind=logo}
Strumigenys fanano
| Strumigenys fanano | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. fanano |
| Binomial name | |
| Strumigenys fanano Fisher, 2000
| |
Found in a range of forest habitats, this species has been collected in litter samples, rotten logs, a rotten stick and on low vegetation.
Identification
Bolton (2000) - A member of the dora complex in the Strumigenys grandidieri-group. Among the grandidieri-group species with a 2-dentate apical fork, fanano is the only one that has the first gastral tergite and sternite densely punctate over the anterior halves or more of the sclerites, coupled with a single posterior projecting pair of hairs on the petiole dorsum. Its orange brown colour and the reticulate-punctate sculpture of the sides of the alitrunk also help identify this species.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -12.790139° to -18.0264°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
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. |
|
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. |
|
Biology
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- fanano. Strumigenys fanano Fisher, in Bolton, 2000: 653, fig. 392 (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 3.0, HL 0.70, HW 0.59, CI 84, ML 0.40, MI 57, SL 0.48, SI 81, PW 0.35, AL 0.71. Characters of dora-complex. Mandibles almost straight and at full closure parallel. Apical fork of mandible with 2 spiniform teeth, without intercalary teeth or denticles. Mandible with 2 preapical teeth or denticles, situated in the apical third of the length; proximal preapical tooth long and spiniform, distal tooth a denticle. Upper scrobe margin ends, or at least becomes extremely indistinct, at about the level of the eye. Eye large, convex, and plainly visible in full-face view. Scape slender and subcylindrical, curved near base, the leading edge with a row of hairs which are slightly flattened or spoon-shaped apically. Cephalic dorsum with appressed remiform to narrowly clavate ground-pilosity; the upper scrobe margin fringed with a row of hairs which are the same shape and size as those on the dorsum. Cephalic dorsum with 4 simple standing hairs arranged in a transverse row close to the occipital margin. Dorsum of head reticulate-punctate. Pronotal humeri rounded, the humeral hair stiffly projecting. Anterior margin of mesonotum with a pair of stout filiform hairs. Ground-pilosity on alitrunk as on head but sparser. Dorsum of alitrunk in outline convex anteriorly and more or less flat posteriorly; the metanotal groove represented by a shallow impression. Anterior mesonotum without a carina above the mesothoracic spiracle. Propodeal spines narrowly triangular and almost spiniform; propodeal lamella absent. Alitrunk dorsum and sides reticulate-punctate. Petiole node in dorsal view reticulate-punctate and slightly broader than long. Postpetiole disc reticulate-punctate. Spongiform appendages of petiole and postpetiole extremely reduced to absent, spongiform collar present on disc of postpetiole. First gastral tergite and sternites densely punctate over anterior half or more of the sclerites; basigastral costulae absent. Dorsum of petiole with one pair of posterior projecting hairs. Dorsal surfaces of postpetiole and gaster with stout standing hairs which are weakly swollen apically. Colour orange brown.
Paratypes. TL 3.1, HL 0.71, HW 0.55, CI 78, ML 0.39, MI 56, SL 0.48, SI 86, PW 0.34, AL 0.69 (1 measured). As holotype.
Type Material
Holotype worker, Madagascar: Res. Ankarana, 7 km. SE Matsaborimanga, l2°54'S, 49°07'E, 150 m., 28.xi.1990, sifted litter (leaf mold rotten wood), montane rainforest #11010-8 (P. S. Ward) (Museum of Comparative Zoology).
Paratypes. 1 worker with same data as holotype (The Natural History 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 653, worker described)
References based on Global Ant Biodiversity Informatics
- 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.
- Goodman S., Y. Anbdou, Y. Andriamiarantsoa, B. L. Fisher, O. Griffiths, B. Keitt, J. J. Rafanomezantsoa, E. Rajoelison, J. C. Rakotonirina, L. Ranaivoarisoa et al. 2017. Results of a biological inventory of the Nosy Ankao island group, Parc National de Loky-Manambato, northeastern Madagascar. Malagasy Nature, Association Vahatra, 2017, 11, <http://www.vahatra.mg/volume11fr.html>
- Ravelomanana A., and B. L. Fisher. 2013. Diversity of ants in burned and unburned grassland , and dry deciduous forest in the Beanka Reserve, Melaky Region, western Madagascar. Malagasy Nature 7: 171-183.