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Strumigenys agetos
| Strumigenys agetos | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. agetos |
| Binomial name | |
| Strumigenys agetos Fisher, 2000
| |
The type material was found under a stone in a "low closed forest."
Identification
Bolton (2000) - A member of the Strumigenys godeffroyi-group. Among the Malagasy region species which have a cylindrical scape but lack a preocular notch, agetos is immediately recognized by its dentition.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -20.2° to -20.2°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar, Mauritius (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 agetos. Worker. Specimen code casent0005476. Photographer April Nobile, uploaded by California Academy of Sciences. | Owned by MCZ, Cambridge, MA, USA. |
   
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| Paratype of Strumigenys agetos. Worker. Specimen code casent0005477. Photographer April Nobile, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- agetos. Strumigenys agetos Fisher, in Bolton, 2000: 646, figs. 390, 413 (w.) MAURITIUS.
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 3.3, HL 0.75, HW 0.60, CI 80, ML 0.32, MI 42, SL 0.45, SI 75, PW 0.36, AL 0.84. Mandible in full-face view with the outer margins shallowly and evenly convex, the width approximately constant from the level of the preapical tooth to near the base where the mandibles are somewhat narrowed. Apical fork with 1 or 2 intercalaries; either both with 2, or left mandible with 2 intercalary denticles and right mandible with a small intercalary tooth. Anterior clypeal margin broadly concave and with a row of short hairs that are curved ventrally at more or less right angles. Upper scrobe margins more or less straight and shallowly divergent posteriorly. Hairs that fringe upper scrobe margin slender and similar in shape to those on leading edge of scape, terminating in an erect filiform hair in apicoscrobal position. Eye large, with about 20 ommatidia, the maximum diameter of the eye distinctly greater than the maximum width of the scape. Cephalic dorsum with curved narrowly spatulate ground-pilosity on anterior two-thirds; simple standing hairs present along posterior margin of head and with 1-2 more anteriorly situated pairs. Pronotal dorsum with several pairs of simple hairs; mesonotum with a pair of standing hairs on anterior margin. Posterior portion of mesonotum depressed behind the level of the standing hairs. Propodeal teeth triangular and incorporated in broad lamellae. Sides of alitrunk reticulate-punctate peripherally, the pleurae mostly smooth. Pronotal dorsum reticulate-punctate and longitudinally feebly rugulose. Remainder of dorsal alitrunk reticulate-punctate. Petiole node in dorsal view reticulate-punctate and distinctly longer than broad. Postpetiole smooth and shining. Spongiform appendages of waist segments well developed, the petiole with a medially impressed ventral curtain and conspicuous lateral lobe on the node. Postpetiole with large lateral and ventral spongiform lobes of which the ventral is the larger, larger than the exposed area of the postpetiole disc in profile. Basigastral costulae arising continuously across tergite, longer than disc of postpetiole; remainder of first gastral tergite smooth. Dorsal surfaces of petiole, postpetiole and gaster with simple standing hairs.
Paratypes. TL 3.1-3.3, HL 0.73-0.76, HW 0.56-0.60, CI 77-80, ML 0.30-0.33, MI 40-43, SL 0.43-0.45, SI 73-80, PW 0.34-0.37, AL 0.78-0.85 (8 measured). As holotype.
Type Material
Holotype worker, Mauritius: Le Pouce 700 m., 20°12'S, 57°31'E, 9.iv.1989, under stone, low closed forest #10260 (P. S. Ward) (Museum of Comparative Zoology).
Paratypes. 8 workers with same data as holotype (The Natural History Museum, South African Museum, University of California, Davis).
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 646, 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.
- Fisher B. L. 2005. A new species of Discothyrea Roger from Mauritius and a new species of Proceratium Roger from Madagascar (Hymenoptera: Formicidae). Proceedings of the California Academy of Sciences (4)56: 657-667.
- IZIKO South Africa Museum Collection