Strumigenys ogyga

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

Strumigenys ogyga casent0914710 p 1 high.jpg

Strumigenys ogyga casent0914710 d 1 high.jpg

Specimen Labels

Apparently a ground nesting forest inhabitant. Specimens have been collected from montane rainforest and evergreen forest and found in a rotten log, a chamber in a tuber, and a litter-sample.

Identification

Bolton (2000) - A member of the Strumigenys oxysma-group. The uniformly dense, sharp reticulate-punctate sculpture that covers the clypeus and the very restricted distribution of hairs on the clypeal disc characterise ogyga. All other members of the group have more numerous clypeal hairs and a less strongly sculptured clypeus. In addition Strumigenys mira has minute eyes and straight hairs that project at right-angles from the leading edge of the scape; Strumigenys sardonica has abundant long arched pilosity on the head; Strumigenys oxysma has two pairs of large, clavate recurved hairs that project laterally from the anterior clypeal margin; Strumigenys anarta, apart from the characters mentioned in the key, has only a single flagellate hair (easily lost) projecting from the dorsolateral margin of the head on the occipital lobe.

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: -33.91667° to -34.06667°.

 
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Afrotropical Region: South Africa (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

Template:Strumigenys

Castes

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • ogyga. Pyramica ogyga Bolton, 2000: 324, fig. 213 (w.m.) SOUTH AFRICA. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 125

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 1.9, HL 0.50, HW 0.34, CI 68, ML 0.07, MI 14, SL 0.26, SI 76, PW 0.22, L 0.50. Clypeus in full-face view with a single pair of laterally projecting stout hairs arising close to the apex of the anterior margin. These hairs are remiform to clavate apically, project laterally beyond the outer margins of the closed mandibles and then curve posteriorly. Lateral margins of clypeus behind this pair of hairs only with one or two pair of minute arched hairs that may be difficult to see. Dorsum of clypeus near posterior margin with an arched row of 4 short clavate hairs that curve posteromedially and are less than half the length of the anterior pair; dorsum otherwise hairless. Clypeus blanketed everywhere with evenly distributed fine, dense reticulate-punctate sculpture, the individual punctures small but very sharply defined. Cephalic dorsum to highest point of vertex with short spatulate hairs that curve medially or posteromedially; behind highest point hairs curve anteriorly. Dorsolateral margins of head with 1 - 2 pairs of fine projecting elongate hairs (missing from holotype), the leading edges of the scapes with apically directed small spatulate hairs only. Pronotal dorsum mostly smooth but with vestiges of faint longitudinal costulae and some weak punctulate vestiges. Posterior collars of petiole and postpetiole laminate rather than spongiform.

Paratypes. TL 1.8-2.0, HL 0.48-0.51, HW 0.32 - 0.35, CI 67-69, ML 0.07-0.08, MI 13-16, SL 0.24-0.28, SI 74-80, PW 0.20-0.22, AL 0.48-0.52 (8 measured). The long laterally projecting hairs of the upper scrobe margins seem easily dislodged in this species; in relatively few paratypes are all four such hairs present.

Type Material

Holotype worker, South Africa: South Cape Prov., Tsitsikama, Lottering For. Res., 12.xii.1979, E-Y 1419, sifting (S. Endrody-Younga) (Transvaal Museum).

Paratypes. 8 workers with same data as holotype; 5 workers and 2 males, South Africa: Cape Prov., Kaimansrivier Estuary, George Ski Club site, 3322DC, 24.ii.1989, found within hollowed out Myrsophyllum asparagoides tuber-cavity previously occupied by unknown insect, SAM-HYM-COO 1537 (C.A. Kleinjan) (TVM, South African Museum, The Natural History Museum).

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 324, fig. 213 worker described)

References based on Global Ant Biodiversity Informatics

  • Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65