Strumigenys furtiva

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

Strumigenys furtiva casent0900189 p 1 high.jpg

Strumigenys furtiva casent0900189 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Strumigenys furtiva.

Identification

Bolton (2000) - The smallest species of the alberti-group, approached only by the smallest examples of Strumigenys nigrescens. Unlike the latter Strumigenys furtiva has unspecialised principal dentition on the mandible (see under Strumigenys nigrescens).

S. fortiva is the only member of the group to lack a transverse row of 4 standing hairs on the vertex that are strongly differentiated from the ground-pilosity. Instead there is a single pair of hairs that are only slightly longer and slightly more erect than the ground-pilosity. The apicoscrobal hair of furtiva is unique in the group. In a few specimens it appears spatulate but in most, including the paratypes, it is strangely hooked; the shape appears to be caused by the front edge of the spatulate hair becoming detached from the main shaft, from close to the base to the apex.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (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 Online Catalogue of the Ants of the World.

  • furtiva. Pyramica furtiva Bolton, 2000: 156 (w.) BRAZIL. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 120

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 1.6, HL 0.46, HW 0.34, CI 74, ML 0.08, MI 17, SL 0.22, SI 65, PW 0.23, AL 0.44. Basal lamella mostly visible in full-face view with mandibles fully closed, the lamella followed immediately by a row of 5 short acutely triangular teeth; no secondary lamella and no alternation of tall pointed and low rounded teeth. Anterior clypeal margin evenly shallowly convex between points where outer margins of closed mandibles intersect anterior clypeal margin, rounding broadly into lateral margins. Apicoscrobal hair short and hooked (spatulate in some specimens), much shorter than the flagellate humeral hair and very different in appearance. Eye with 7 - 8 ommatidia in total. Vertex with a single pair of suberect standing hairs that are only weakly differentiated from the ground-pilosity. Promesonotal dorsum reticulate-punctate, propodeal dorsum much more faintly and superficially sculptured. Pleurae and side of propodeum glassy smooth. Petiole node in dorsal view sculptured , broader than long. Basigastral costulae strong, slightly longer than maximum length of postpetiole disc.

PARATYPE. TL 1.5-1.6, HL 0.45-0.46, HW 0.33-0.34, CI 73-74, ML 0.07-0.08, MI 15-17, SL 0.22-0.23, SI 65-67, PW 0.22-0.23, AL 0.42-0.44 (5 measured).

Type Material

Holotype worker, Brazil: Amazonas, Manaus to Itacoatiara Rd, km. 49, 27.viii.1962, M-95 (W.L. Brown) (Museum of Comparative Zoology).

Paratypes. 7 workers with same data as holotype (MCZ, The Natural History Museum).

References

  • Baroni Urbani, C. & 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. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 156, worker described)