Strumigenys strygax

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

Strumigenys strygax casent0900874 p 1 high.jpg

Strumigenys strygax casent0900874 d 1 high.jpg

Specimen Labels

This species has been collected from litter samples in rainforest and rubber plantations.

Identification

Bolton (2000) – A member of the koningsbergeri complex in the Strumigenys koningsbergeri-group. See Strumigenys koningsbergeri.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo, Indonesia, Malaysia.
Oriental Region: Thailand (type locality).
Palaearctic Region: China.


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.

  • strygax. Strumigenys strygax Bolton, 2000: 853 (w.) THAILAND.

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 2.5, HL 0.74, HW 0.66, CI 89, ML 0.31, MI 42, SL 0.36, SI 55, PW 0.33, AL 0.68. With characters of koningsbergeri-complex. Preocular concavity forms a shallow depression on ventral surface of head. Upper scrobe margins not constricted above eye, only extreme outer arc of eye visible in full-face view, or eye not visible. Depression across posterior vertex of head shallow, weakly developed. Pronotum without a pair of short standing hairs close to anterodorsal margin. Pronotal humeral hair stiff, straight and simple. A single erect pair of hairs on mesonotum. Katepisternum, metapleuron and side of propodeum smooth except for weak reticulate or reticulate-punctate sculpture around the periphery. Bullae of femoral glands absent on middle and hind legs. Lamella on propodeum conspicuous. Standing hairs on first gastral tergite weakly spatulate or slightly expanded and flattened toward the apex.

Paratypes. TL 2.1-2.5, HL 0.64-0.74, HW 0.54-0.65, CI 84-89, ML 0.26-0.31, MI 38-42, SL 0.30-0.38, SI 53-58, PW 0.25-0.32, AL 0.56-0.65 (5 measured).

Dimensions in non-paratypic workers. HL 0.64-0.75, HW 0.54-0.65, CI 84-88, ML 0.26-0.30, MI 38-43, SL 0.32-0.37, SI 56-60 (10 measured).

Type Material

Holotype worker, Thailand: Chiang Mai, Chang Khian, 16.xi.1984 (D. Jackson) (The Natural History Museum).

Paratypes. 5 workers with same data as holotype (BMNH, Museum of Comparative Zoology, Musee d'Histoire Naturelle Genève).

Determination Clarifications

This species was referred to as Strumigenys sp. 6 in Bolton, 1998b: 92.

References

  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 853, worker described)
  • Zhou, S.-Y.; Xu, Z.-H. 2003. Taxonomic study on Chinese members of the ant genus Strumigenys F. Smith (Hymenoptera: Formicidae) from the mainland of China. Acta Zootaxon. Sin. 28: 737-740 (page 737, new record)