Strumigenys zagan

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

Strumigenys zagan casent0900817 p 1 high.jpg

Strumigenys zagan casent0900817 d 1 high.jpg

Specimen Labels

Known from the type material, two workers from a fogging sample.

Identification

Bolton (2000) - A member of the mjoebergi complex in the Strumigenys godeffroyi-group. S. zagan and Strumigenys phoenix share a shallow cuticular crest on the inner margin of the mandible, as described above. The crest is slightly broader and more conspicuous in the former than in the latter. The two are easily separated as phoenix has the same relatively stout pilosity on both the first and second gastral tergites and has slightly shorter mandibles (MI 38-41), whereas in zagan the second tergite has long flagellate hairs and the mandibles are somewhat longer (MI 45-46). Both these species, together with Strumigenys epyna and Strumigenys phytibia, have the pronotal humeral hair flagellate; see under epyna.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo (type locality), Brunei Darussalam, Indonesia, Malaysia.


Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • zagan. Strumigenys zagan Bolton, 2000: 804 (w.) BORNEO.

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 2.3, HL 0.61, HW 0.42, CI 69, ML 0.28, MI 46, SL 0.38, SI 90, PW 0.26, AL 0.62. Characters of mjoebergi-complex. Inner margin of mandible in full-face view with a shallow cuticular crest along about the median third of its length; the crest is low and inconspicuous but is sufficient to alter the shape of the margin from evenly concave to shallowly convex where it occurs. Apicoscrobal hair simple. With head in full-face view the ventrolateral margin not visible behind the level of the eye; dorsolateral margin sharply defined and darker in colour than remainder of dorsum. Cephalic dorsum with 4 erect short simple hairs close to the occipital margin, head without other standing hairs but with dense ground-pilosity that is curved and somewhat elevated, especially near highest point of vertex. Pronotal humeral hair flagellate. Pronotum and mesonotum dorsally each with a pair of erect fine subflagellate hairs. Side of alitrunk entirely reticulate-punctate. Lateral spongiform lobe of petiole small, in profile confined to posterior margin of node. Disc of postpetiole finely reticulate-shagreenate to reticulate-punctate. Basigastral costulae strongly defined, coarse basally, about equal in length to disc of postpetiole but not extending half the length of the tergite. First gastral tergite with a pair of flagellate hairs near base, other pilosity on sclerite stiff and simple or slightly flattened and splayed apically; second tergite with a pair of flagellate hairs.

Paratype. TL 2.3, HL 0.62, HW 0.42, CI 68, ML 0.28, MI 45, SL 0.38, SI 90, PW 0.26, AL 0.62.

Type Material

Holotype worker, Brunei: Bukit Sulang, nr Lamunin, 20.viii.-10.ix.1982, fogging, sample T3/1, BMNH 1982-388 (N.E. Stork) (The Natural History Museum).

Paratype. 1 worker with same data but T10(11)/1 (BMNH).

References

  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 804, worker described)

References based on Global Ant Biodiversity Informatics

  • Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65
  • Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58