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Strumigenys schuetzi
| Strumigenys schuetzi | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. schuetzi |
| Binomial name | |
| Strumigenys schuetzi Fisher, 2000
| |
Nothing is known about the biology of Strumigenys schuetzi.
Identification
Bolton (2000) - The only member of the schuetzi complex in the Strumigenys arnoldi-group. S. schuetzi is distinguished from other species in the arnoldi-group by the presence of a laterally projecting straight clavate pronotal humeral hair, antenna with 4 segments, and mandible with only one preapical tooth, set at the midlength of blade. The upper scrobe margin with broadly spoon-shaped hairs that do not terminate at the posterior end with a more or less straight clavate hair also helps to distinguish this species.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -13.96167° to -13.998°.
| 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. |
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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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| Paratype of Strumigenys schuetzi. Worker. Specimen code casent0005632. Photographer April Nobile, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
   
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| Paratype of Strumigenys schuetzi. Worker. Specimen code casent0005633. Photographer April Nobile, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
   
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| Holotype of Strumigenys schuetzi. Worker. Specimen code casent0005634. 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.
- schuetzi. Strumigenys schuetzi Fisher, in Bolton, 2000: 636, fig. 385 (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 1.7, HL 0.40, HW 0.42, CI 105, ML 0.13, MI 32, SL 0.21, SI 50, PW 0.23, AL 0.41. Characters of schuetzi-complex. Mandible blade narrow, linear, outcurved; no intercalary denticles present between the apical fork teeth. Preapical dentition consisting of a single long spiniform tooth at about the midlength of each blade. Anterior clypeal margin broad, projecting beyond the mandibular bases on each side and with numerous small spatulate to spoon-shaped hairs which are curved towards the midline. Lateral margin of clypeus short. Preocular lamina broad, projecting below the antennal insertion. Median portion of clypeus broad, finely punctulate and with scale-like to spoon-shaped appressed hairs present. Dorsum of head behind clypeus reticulate-punctate and with broadly scale-like to orbicular shaped hairs anterior of occipital corners. Dorsum of head without a transverse row of hairs close to the occipital margin. Row of scale-like to broad spoon-shaped hairs on upper scrobe margin not terminating at the posterior end with a more or less straight clavate hair. Eye very small, with 3 ommatidia in total and situated just above the ventral scrobe margin. Antenna with 4 segments. Leading edge of scape a dorsoventrally flattened convex lamella with a row of proj ecting broadly spoon-shaped hairs. Scape strongly back-curved, with a anteriorly projecting subbasal lobe at the bend, and apex of lobe with a projecting broad clavate, almost fan-like hair. In profile, the promesonotum slightly convex; propodeal dorsum shallowly convex anteriorly, sloping posteriorly to the declivity. Propodeal teeth very short, mostly incorporated in the lamellae, with only a small point projecting; lamella a very narrow strip. Side of alitrunk mostly smooth and shiny with weak peripheral punctures. Pronotal disk reticulate-punctate with longitudinal striolate and costulae sculpture, remainder of alitrunk dorsum reticulate punctate. Pronotal humeral hair present, straight clavate; remainder of alitrunk dorsum without erect hairs. Ground-pilosity of dorsal alitrunk consisting of scattered small suberect fine hairs. Dorsal surface of petiole node reticulate-punctate; the postpetiole more or less smooth. Petiole with a pair of broad clavate hairs; postpetiole and gaster with clavate to filiform hairs. In profile the petiole with a well developed spongiform lamella. Postpetiole with well developed lateral and ventral spongiform lobes. Base of first gastral tergite with costulae radiating on each side of a broad central clear area, remainder of gaster smooth and shiny where clean. Color pale brown.
Paratype. TL 1.6-1.8, HL 0.39-0.41, HW 0.41-0.42, CI 103-108, ML 0.13-0.15, MI 33-38, SL 0.21-0.22, SI 50-53, PW 0.24-0.25, AL 0.38-0.43 (4 measured). As holotype.
Measurements of non-paratypic material extend the range shown by the type-series: HL 0.40-0.45, HW 0.42-0.45, CI 99-103, ML 0.14-0.16, MI 32-35, SL 0.24, SI 54-56 (3 measured).
Type Material
Holotype worker, Madagascar: Provo Antsiranana, R.S. Manongarivo, 10. 8 km. 229°SW Antanambao, 400 m., 13°57.7'S, 48°26.0'E, 8.xi.1998, sifted litter (leaf mold, rotten wood) # 1 996 (03)-2 (B. L. Fisher) (Museum of Comparative Zoology).
Paratypes. 10 workers with same data as holotype but coded #1996 (7)-2, (10)-2, (11)-2, (50)-4, (9)-2, (38)-3, (46)-4, (2)-2, (23)-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 636, 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. 2002. Ant diversity patterns along an elevational gradient in the Reserve Speciale de Manongarivo, Madagascar. in Gautier, L. and S.M. Goodman, editors, Inventaire Florestique et Faunistique de la Reserve Speciale de Manongarivo (NW Madagascar)