Strumigenys karawajewi

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Strumigenys karawajewi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. karawajewi
Binomial name
Strumigenys karawajewi
Brown, 1948

Strumigenys karawajewi casent0280700 p 1 high.jpg

Strumigenys karawajewi casent0280700 d 1 high.jpg

Specimen Labels


Widely distributed in the Malesian region, this is the only species of the capitata-group to have been found in Australia.


Bolton (2000) - A member of the Strumigenys capitata-group. S. karawajewi is closely related to Strumigenys dohertyi and shares a similar wide distribution. The two form a close species-pair characterised within the group by their possession of apicoscrobal and pronotal humeral (where they may be looped apically) flagellate hairs. The two are distinguished by the persistently small size of karawajewi (compare measurements), its possession of only a single pair of standing hairs on the mesonotal dorsum and its relatively slightly shorter scapes (SI 56-60 in karawajewi, SI 62-72 in dohertyi).

Keys including this Species


Distribution based on Regional Taxon Lists

Afrotropical Region: United Republic of Tanzania.
Australasian Region: Australia.
Indo-Australian Region: Borneo, Indonesia (type locality), Malaysia, Micronesia (Federated States of), New Guinea, Palau, Philippines, Solomon Islands, Tonga.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Brown (1964) - Smithistruma dubia (=Strumigenys karawajewi) is a New Guinea ant that has spread to certain Pacific island areas, possibly by way of human commerce. New Guinea, rain forest. From Western Samoa, north coast of Upolu, leaf litter and soil berlesate, rain forest.




  • emeryi. Strumigenys (Cephaloxys) emeryi Karavaiev, 1935a: 106, fig. 25 (q.) INDONESIA (Sumatra). [Junior primary homonym of Strumigenys emeryi Mann, 1922: 37.] Replacement name: karawajewi Brown, 1948b: 44.
  • karawajewi. Strumigenys (Trichoscapa) karawajewi Brown, 1948b: 44. Replacement name for emeryi Karavaiev, 1935a: 106. [Junior primary homonym of emeryi Mann, 1922: 37.] Combination in Smithistruma: Brown, 1948e: 105; in Trichoscapa: Brown, 1995: 219; in Pyramica: Bolton, 1999: 1673; in Strumigenys: Baroni Urbani & De Andrade, 2007: 122. Senior synonym of dubia: Brown, 1995: 219. See also: Brown, 1953g: 124; Bolton, 2000: 400.
  • dubia. Smithistruma (Smithistruma) dubia Brown, 1953g: 122, pl. 1, fig. 13 (w.q.) PALAU IS. Junior synonym of karawajewi: Brown, 1995: 219.

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


Bolton (2000) - TL 1.8-2.1, HL 0.46-0.52, HW 0.37-0.41, CI 79-83, ML 0.09-0.11, MI 20-23, SL 0.22-0.24, SI 56-60, PW 0.24-0.28, AL 0.48-0.53 (20 measured).

Apicoscrobal hair flagellate. Dorsum of head in profile with a transverse row of 4 standing hairs close to the occipital margin, and with a single pair of similar hairs just in front of the highest point of the vertex. Eye with 3-4 ommatidia in the longest row. Pronotal humeral hair flagellate or apically looped. Dorsum of mesonotum with a single pair of weakly remiform to feebly elongate-clavate stout standing hairs. Lamella of propodeal declivity narrow and inconspicuous. Petiole node in dorsal view as broad as or broader than long. Disc of postpetiole glassy smooth when clean (frequently with a waxy surface bloom present). First gastral tergite either with 3 transverse rows of standing hairs which are located basally, medially and apically, or with apical and basal transverse rows between which is a median pair of hairs, or with apical and basal transverse rows only.

Type Material

Bolton (2000) - Holotype queen, INDONESIA: Sumatra, Siak, Nr. 5414 (O. John) (Institute of Zoology of the Ukranian National Academy of Sciences) [examined].

  • Smithistruma (Smithistruma) dubia: Holotype, worker, Garakayo L., Palau Islands, Palau Islands.
  • Smithistruma (Smithistruma) dubia: Paratype, worker(s), queen(s), Garakayo L., Palau Islands, Palau Islands.
  • Strumigenys (Cephaloxys) emeryi: Holotype, queen, Saik, Sumatra, Indonesia.


  • Baroni Urbani, C. and 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. 1999. Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). J. Nat. Hist. 3 33: 1639-1689 (page 1673, combination in Pyramica)
  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 400, redescription of worker)
  • Brown, W. L., Jr. 1948b. Strumigenys karawajewi, new name for a Sumatran ant. Entomol. News 59: 44 PDF
  • Brown, W. L., Jr. 1948e. A preliminary generic revision of the higher Dacetini (Hymenoptera: Formicidae). Trans. Am. Entomol. Soc. 74: 101-129 (page 105, combination in Smithistruma (Smithistruma))
  • Brown, W. L., Jr. 1953g. Revisionary studies in the ant tribe Dacetini. Am. Midl. Nat. 50: 1-137 (page 124, notes on queen)
  • Brown, W. L., Jr. 1964b. The ant genus Smithistruma: a first supplement to the World revision (Hymenoptera: Formicidae). Trans. Am. Entomol. Soc. 89:183-200 PDF
  • Brown, W. L., Jr. 1995b [1994]. Trichoscapa karawajewi and its synonyms (Hymenoptera: Formicidae). Psyche (Camb.) 101: 219-220 (page 219, combination in Trichoscapa)
  • Karavaiev, V. 1935a. Neue Ameisen aus dem Indo-Australischen Gebiet, nebst Revision einiger Formen. Treubia 15: 57-118 (page 106, fig. 25 queen described (junior primary homonym of Strumigenys emeryi Mann, 1922:37)
  • Shattuck, S. O. 1999. Australian ants. Their biology and identification. Collingwood, Victoria: CSIRO Publishing, xi + 226 pp. (page 170, see also)