Strumigenys perparva

AntWiki: The Ants --- Online
Strumigenys perparva
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. perparva
Binomial name
Strumigenys perparva
Brown, 1958

Strumigenys perparva casent0178638 profile 1.jpg

Strumigenys perparva casent0178638 dorsal 1.jpg

Specimen labels

A forest inhabitant.

Identification

Bolton (2000) - This widely distributed minute species is the only member of the group to have posteriorly curved hairs on the upper scrobe margins. In the Neotropical region only perparva and Strumigenys ogloblini have this character, and they were included in a single group by Brown (1958e). However, ogloblini has an intercalary denticle in the apical fork, is larger (HL 0.55-0.56) and has a broad spongiform curtain ventrally on the petiole.

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: 10.55944444° to -64.36°.

     
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Neotropical Region: Bolivia, Brazil, Colombia, Ecuador, Guyana, Panama, Peru, Suriname, Trinidad and Tobago (type locality), Venezuela.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.
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Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.
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Biology

Template:Strumigenys

Castes

Nomenclature

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

  • perparva. Strumigenys perparva Brown, 1958f: 133, fig. 1 (w.q.) TRINIDAD. [Strumigenys perparva Weber, 1952b: 3; unavailable name, attributed to Brown.] See also: Bolton, 2000: 556.

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

Description

Worker

Brown 1958.

TL 1.6-1.8, HL 0.39-0.44, HW 0.32-0.36, CI 81-83, ML 0.20-0.26, MI 50-58, SL 0.20-0.24, SI 62-70, PW 0.20-0.25, AL 0.36-0.44 (10 measured).

Mandible with a single preapical tooth whose length is about equal to, or slightly less than, the distance separating it from the apicodorsal tooth; without a more proximal denticle. With the head in full-face view the spoon-shaped hairs that fringe the upper scrobe margins are curved posteriorly or posterodorsally; this row of hairs terminates in a fine flagellate apicoscrobal hair. Scape with an abrupt subbasal bend; hairs on leading edge of scape that curve toward the base of the scape longer than maximum width of scape. Flagellate hairs present at pronotal humeri, on mesonotum (1 pair), and on waist segments and first gastral tergite. Lamellae on propodeal declivity not dentiform at base. Ventral surface of petiole with a narrow cuticular carina but without spongiform tissue; lateral spongiform lobe of petiole vestigial, nothing more than a slight extension of the posterior collar.

Queen

Brown (195) - Dealate: TL 1.7, HL 0.40, ML 0.20, WL 0.42 mm.; CI 86, MI 51.

Differs from worker in the usual ways. Petiolar node even more depressed, and wider. Mesonotum evenly and densely punctulate, with carina or rugulae; with a few short, fine erect hairs. Eyes very small for a female Strumigenys, only weakly convex.

Type Material

Holotype worker, paratype worker and queen, TRINIDAD: Pitch Lake, 22.vi.1935 (N. A. Weber); paratypes, BRAZIL: Sao Paulo, Agudos, 6.iii.1955, No. 1376 (C. Gilbert); Belem do Pant (C.R. Goncalves) (American Museum of Natural History, Museum of Comparative Zoology, National Museum of Natural History, Museu de Zoologia da Universidade de Sao Paulo, The Natural History Museum) [examined].

References

References based on Global Ant Biodiversity Informatics

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