Strumigenys tathula

AntWiki: The Ants --- Online
Strumigenys tathula
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. tathula
Binomial name
Strumigenys tathula
(Bolton, 2000)

Pyramica tathula casent0102259 profile 1.jpg

Pyramica tathula casent0102259 dorsal 1.jpg

Specimen labels

The few collections of this species have been from grassland habitat, with one noted as being taken from in a pitfall trap.

Identification

A member of the Strumigenys mutica-group.

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: -20.76805556° to -20.775°.

 
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Malagasy Region: Madagascar (type locality).

Distribution based on AntMaps

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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

Pyramica tathula casent0102260 head 1.jpgPyramica tathula casent0102260 profile 1.jpgPyramica tathula casent0102260 dorsal 1.jpgPyramica tathula casent0102260 label 1.jpg
Worker. Specimen code casent0102260. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by NHMUK, London, UK.
Pyramica tathula casent0005461 head 1.jpgPyramica tathula casent0005461 profile 1.jpgPyramica tathula casent0005461 dorsal 1.jpgPyramica tathula casent0005461 label 1.jpg
Worker. Specimen code casent0005461. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.

Queen

Images from AntWeb

Pyramica tathula casent0102261 head 1.jpgPyramica tathula casent0102261 profile 1.jpgPyramica tathula casent0102261 dorsal 1.jpgPyramica tathula casent0102261 label 1.jpg
Queen (alate/dealate). Specimen code casent0102261. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by NHMUK, London, UK.
Pyramica tathula casent0006070 head 1.jpgPyramica tathula casent0006070 profile 1.jpgPyramica tathula casent0006070 profile 2.jpgPyramica tathula casent0006070 dorsal 1.jpgPyramica tathula casent0006070 label 1.jpg
Queen (alate/dealate). Specimen code casent0006070. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.

Male

Images from AntWeb

Pyramica tathula casent0005460 head 2.jpgPyramica tathula casent0005460 profile 2.jpgPyramica tathula casent0005460 dorsal 2.jpgPyramica tathula casent0005460 label 1.jpg
Paratype of Strumigenys tathulaMale (alate). Specimen code casent0005460. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.
Pyramica tathula casent0006071 head 1.jpgPyramica tathula casent0006071 profile 1.jpgPyramica tathula casent0006071 dorsal 1.jpgPyramica tathula casent0006071 label 1.jpg
Male (alate). Specimen code casent0006071. 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.

  • tathula. Pyramica tathula Bolton, 2000: 352 (w.q.m.) MADAGASCAR. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 129

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 1.8, HL 0.46, HW 0.37, CI 80, ML 0.14, MI 30, SL 0.28, SI 76, PW 0.27, AL 0.48. Answering to the description of Strumigenys erynnes but differing as follows.

1 Propodeum armed with a pair of triangular teeth, each subtended by a narrow lamella down the declivity.

2 First gastral tergite with about a dozen suberect short remiform hairs, arranged in rows over the whole sclerite (rather than being restricted to an apical pair and a basal pair).

3 Averaging smaller than erynnes and with somewhat shorter scapes (compare measurements).

Paratypes. TL 1.8-2.0, HL 0.44-0.52, HW 0.37- 0.41, CI 79-84, ML 0.13-0.15, MI 26-30, SL 0.28-0.32, SI 76-80, PW 0.26-0.60, AL 0.47-0.54 (4 measured).

Type Material

Holotype worker, Madagascar: Prov. Fianarantsoa, 28 km. SSW Ambositra, Ankazomivady, 1670 m., 11.i.1998, 20 °46.5'S, 47°10.1'E, #1620(31)-1, sifted litter, grassland (B.L. Fisher) (The Natural History Museum).

Paratypes. 1 worker with same data as holotype; 1 worker, 1 queen and 1 male with same data but #1620(37)-7; 2 workers and 2 queens with same data but #1620(17)-9 (BMNH, Museum of Comparative Zoology, in coll. Fisher (where there are also some specimens in alcohol)).

References

  • Baroni Urbani, C. & De Andrade, M.L. 2007. The ant tribe Dacetini: limits and constituent genera, with descriptions of new species. Annali del Museo Civico di Storia Naturale “G. Doria”. 99:1-191.
  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 352, worker described)