Strumigenys zygon

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

Strumigenys zygon casent0900896 p 1 high.jpg

Strumigenys zygon casent0900896 d 1 high.jpg

Specimen Labels

This species has been found in litter-samples of a dry rainforest and eucalyptus open-forest.

Identification

Bolton (2000) - A member of the smythiesii complex in the Strumigenys godeffroyi-group. This species is unique in the complex as it is the only Austral member to combine small size with the presence of two freely laterally projecting hairs on the upper scrobe margin and dense decumbent gastral pubescence. See also notes under Strumigenys friedae.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • zygon. Strumigenys zygon Bolton, 2000: 971 (w.) AUSTRALIA.

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 1.7, HL 0.45, HW 0.33, CI 73, ML 0.19, MI 42, SL 0.26, SI 79, PW 0.21, AL 0.46. With characters of smythiesii-complex. Apicoscrobal hair fine, subflagellate; upper scrobe margin also with a second projecting subflagellate hair, at about the level of the eye. Cephalic dorsum finely reticulate-punctate and with inconspicuous short slender ground-pilosity. Cephalic dorsum usually with a pair of short fine standing hairs, located close to midline near occipital margin; these hairs frequently lost or flattened down and inconspicuous, sometimes apparently absent. Eye small, with less than 10 ommatidia in total. Pronotal humeral hair flagellate; mesonotum with a single pair of erect fine flagellate hairs. Dorsal alitrunk finely reticulate-punctate; pronotal dorsum usually with some very fine longitudinal rugulae and intensity of sculpture may be reduced on propodeal dorsum. Propodeal declivity with posterior (free) margin of lamella shallowly convex to shallowly concave. Mesopleuron, metapleuron and side of propodeum entirely smooth and shining. Disc of postpetiole smooth and shining. First gastral tergite with characteristic pilosity: a few fine or looped erect hairs present but surface of sclerite with conspicuous decumbent pubescent hairs that are relatively long, soft and curved, and directed medially or posteromedially.

Paratypes. TL 1.7, HL 0.46, HW 0.32-0.33, CI 70-72, ML 0.18-0.19, MI 40-41, SL 0.26, SI 79-80, PW 0.21, AL 0.43-0.45 (2 measured).

Dimensions of non-paratypic workers. TL 1.7-1.9, HL 0.45-0.48, HW 0.32-0.36, CI 70-75, ML 0.18-0.22, MI 40-46, SL 0.24-0.28, SI 73-80 (8 measured).

Type Material

Holotype worker, Australia: Queensland (MEQ), Yeppoon, 27.iv.1979, QM Berlesate no. 70, 23.08S, 150.45E, dry rainforest, 20 m., sieved litter (G. B. Monteith) (Australian National Insect Collection). [Holotype is upper specimen of two on pin.] Paratypes. 2 workers with same data as holotype (ANIC, The Natural History Museum).

References

  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 971, worker described)