Strumigenys humata

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Strumigenys humata
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. humata
Binomial name
Strumigenys humata
Lattke & Goitía, 1997

Strumigenys humata inbiocri001283978 profile 1.jpg

Strumigenys humata inbiocri001283978 dorsal 1.jpg

Longino (Ants of Costa Rica) - This species inhabits wet forest leaf litter. Lattke and Goitia (1997) discovered the species in a cloud forest site in the interior of Venezuela. This report and Bolton (2000) extend the range to montane cloud forest sites in Costa Rica and Panama. This species is probably widespread but undersampled.

Identification

Bolton (2000) - A member of the Strumigenys emeryi-group. See notes under Strumigenys emeryi. Material referred here includes some of that discussed by Brown (1961: 58) that did not fit his original concept of Strumigenys micretes.

Longino (Ants of Costa Rica) - Apical fork of mandible with one intercalary tooth; mandible lacking preapical teeth or denticles; gaster smooth and shining, with long flagelliform setae; longitudinal or oblique costulation as the main component on the pronotal dorsum; any punctate sculpture that may be present is feeble and very obviously secondary to the costulate component.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica, Honduras, Panama, Venezuela (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.

  • humata. Strumigenys humata Lattke & Goitía, 1997: 385, figs. 35, 44 (w.) VENEZUELA. See also: Bolton, 2000: 515.

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

Description

Worker

Bolton (2000) - TL 3.3-3.7, HL 0.82-0.92, HW 0.58-0.66, CI 71-74, ML 0.52-0.58, MI 63-65, SL 0.58-0.64, SI 94-102, PW 0.34-0.40, AL 0.86-1.00 (7 measured).

Mandible without preapical dentition or with a tiny denticle close to the apicodorsal tooth (may be present on one mandible but not on the other). Proximally there may be a minute denticle on the inner dorsal margin; this may be absent, or present on one or both mandibles. Both pairs of standing hairs on cephalic dorsum stiff, simple to spatulate. Apicoscrobal hair and pronotal humeral hair flagellate; a flagellate pair present on mesonotum and similar hairs numerous on waist segments and first gastral tergite. With alitrunk in profile the pronotal ground-pilosity is very conspicuous, elongate spatulate, raised and strongly arched toward the dorsal midline. Pronotal dorsum longitudinally costulate-rugulose, the spaces between costulae almost smooth or with feeble superficial punctulation. If punctulate sculpture is present it is decidedly secondary to the strong costulate component. Mesopleuron and part to most of metapleuron smooth. Posterior (free) margin of propodeal lamella straight to weakly convex for most of its depth; propodeal lacuna conspicuous. Ventral surface of petiole with a curtain of spongiform tissue. Dorsum of petiole node with weak rugulose sculpture. Disc of postpetiole finely longitudinally costulate across its width, the costulae traversing most or all the length of the disc. Basigastral costulae distinctly shorter than length of postpetiole disc.

Type Material

Bolton (2000) - Holotype and paratype workers, VENEZUELA: Edo. Aragua, Lorna de Hierro, 10°10'N, 67°08'W, 25.5 km. SE La Victoria, 1400 m., 27.iv.1995 and 16.xi.1994 (J. E. Lattke) (Instituto de Zoologia Agricola, Museum of Comparative Zoology) [not seen].

References

  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028.
  • Lattke, J. and Goitía, W. 1997. El género Strumigenys (Hymenoptera: Formicidae) en Venezuela. Caldasia. 19:367-396. (page 385, figs. 35, 44 worker described)