Strumigenys eurycera

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Strumigenys eurycera
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. eurycera
Binomial name
Strumigenys eurycera
(Emery, 1897)

Strumigenys eurycera casent0280730 p 1 high.jpg

Strumigenys eurycera casent0280730 d 1 high.jpg

Specimen Labels

Few specimens of this species have any associated habitat data. The few details, indicating collections were made in lowland forests, are all that is known about the biology of this species.

Identification

Bolton (2000) - A member of the Strumigenys eurycera-group. The grossly expanded lobe on the leading edge of the scape renders this species immediately recognisable. No other species in the region has this character though the development is paralleled by the Afrotropical Strumigenys tetraphanes (a member of the arnoldi-group).

Specimens from Kai Besar are at the upper end of the size range noted. They tend to be larger than those from Sulawesi or Papua New Guinea but the morphologically diagnostic features are stable across the whole range.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Indonesia, New Guinea (type locality), Solomon Islands.

Check distribution from AntMaps.

Distribution based on specimens

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The above specimen data are provided by AntWeb. Please see Strumigenys eurycera for further details

Biology

Castes

Worker

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • eurycera. Epitritus eurycera Emery, 1897c: 581, pl. 14, fig. 17 (w.) NEW GUINEA. Combination in Quadristruma: Brown, 1949b: 50; in Strumigenys: Bolton, 1999: 1674. See also: Bolton, 2000: 779.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Bolton (2000) - TL 1.7-2.2, HL 0.46-0.56, HW 0.42-0.48, CI 86-93, ML 0.16-0.20, MI 33-37, SL 0.24-0.34, SI 60-70, PW 0.24-0.30, AL 0.49-0.60 (7 measured).

Mandibles slender, narrower at base than at apex, inserted very close together in full-face view and without trace of a lamella on the inner margin proximal of the preapical tooth. Apical antennal segment stout, not spindle-shaped nor constricted basally, broadly articulated to the preapical segment. Scape very flattened and enormously expanded into an anteriorly-directed lobe; length of scape at most only 1.60 X the maximum scape width. Hairs on leading edge of scape curved toward the scape apex on the proximal half and toward the scape base on the distal half; in other words the hairs curve toward the apex of the lobe both proximal and distal of its apical point. Scrobe behind level of eye short and only feebly impressed. Dorsolateral margin of head and pronotal humeri without specialised projecting hairs. Cephalic dorsum without erect hairs or at most with a single minute pair of simple hairs close to the occipital margin. Erect hairs on first gastral tergite short and stiff, truncated or very slightly expanded apically.

Type Material

Bolton (2000) - Syntype workers, PAPUA NEW GUINEA: Aitape (= Berlinhafen) (L. Biro) (Hungarian Natural History Museum) [examined].

References

  • Bolton, B. 1999. Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). J. Nat. Hist. 3 33: 1639-1689 (page 1674, Combination in Strumigenys)
  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 779, redescription of worker)
  • Brown, W. L., Jr. 1949c. Revision of the ant tribe Dacetini: III. Epitritus Emery and Quadristruma new genus (Hymenoptera: Formicidae). Trans. Am. Entomol. Soc. 75: 43-51 (page 50, Combination in Quadristruma)
  • Donisthorpe, H. 1916b. Epitritus wheeleri, n. sp., an ant new to science; with notes on the genus Epitritus, Emery. Entomol. Rec. J. Var. 28: 121-122 (page 121, catalogue)
  • Emery, C. 1897c. Formicidarum species novae vel minus cognitae in collectione Musaei Nationalis Hungarici quas in Nova-Guinea, colonia germanica, collegit L. Biró. Természetr. Füz. 20: 571-599 PDF (page 581, worker described)
  • Emery, C. 1924f [1922]. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [concl.]. Genera Insectorum 174C: 207-397 (page 327, catalogue)