Pheidole transversostriata

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Pheidole transversostriata
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. transversostriata
Binomial name
Pheidole transversostriata
Mayr, 1887

Pheidole transversostriata casent0601287 profile 1.jpg

Pheidole transversostriata casent0601287 dorsal 1.jpg

Specimen labels

Synonyms

Forel (1901) collected the species from soil in Colombia. (Wilson 2003)

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

P. transversostriata is evidently a wide-ranging but locally uncommon species, known from scattered records from St. Thomas, Virgin Islands, and Trinidad and Tobago (Port of Spain) to the Guianas, Colombia, and Rio de Janeiro and Santa Catarina, Brazil. (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Barbados, Brazil, Colombia, Guyana (type locality), Suriname, Trinidad and Tobago, Venezuela.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Major

Nomenclature

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

  • transversostriata. Pheidole transversostriata Mayr, 1887: 584 (s.) GUYANA. Senior synonym of lacerta, nigridens: Wilson, 2003: 645.
  • nigridens. Pheidole transversostriata var. nigridens Forel, 1901e: 362 (s.w.) COLOMBIA. Junior synonym of transversostriata: Wilson, 2003: 645.
  • lacerta. Pheidole lacerta Wheeler, W.M. 1922c: 6 (s.) TRINIDAD. Junior synonym of transversostriata: Wilson, 2003: 645.

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

Description

From Wilson (2003): DIAGNOSIS A member of the transversostriata group distinguished in the major by the broad ladder-like array of transverse carinae that extend unbroken from the occiput to the frontal lobes where they curve anteriorly to the ends of the lobes. It is close to scalaris of Costa Rica, differing in the major in the lack of rugoreticulum on the occiput (completely reticulate in scalaris) and less elongate head (Head Length 1.2! Head Width versus Head Length 1.3! Head Width in scalaris), and in the minor by the completely foveolate sides of the pronotum (versus smooth and shiny in scalaris). However, a major syntype of transversostriata “var. nigridens” from Colombia has the corners of the occiput rugoreticulate and is thus intermediate between transversostriata and scalaris in this character. The two forms may prove to be geographic variants (or good species) when more material becomes available.

MEASUREMENTS (mm) Unique holotype major: HW 0.66, HL 0.80, SL 0.34, EL 0.10, PW 0.36. Minor (St. Thomas, Virgin Islands): HW 0.40, HL 0.44, SL 0.36, EL 0.06, PW 0.26.

COLOR Major: medium yellowish brown, with head a shade lighter and gaster a shade darker than mesosoma and waist.

Minor: concolorous yellowish brown, legs clear yellow.


Pheidole transversostriata Wilson 2003.jpg

Figure. Upper: major (syntype of synonymous P. lacerta Wheeler, Port of Spain, Trinidad, compared with unique holotype of P. transversostriata). Lower: minor (Inner Brass, St. Thomas, Virgin Islands, associated with major compared with transversostriata holotype). Scale bars = 1 mm.

Lectotype Specimen Labels

Type Material

Guianas. Naturhistorisches Museum Wien, Vienna - as reported in Wilson (2003)

Etymology

L transversostriata, transversely lined, referring to the transverse carinulae of the major head. (Wilson 2003)

References

  • Mayr, G. 1887. Südamerikanische Formiciden. Verh. K-K. Zool.-Bot. Ges. Wien 37: 511-632 (page 584, soldier described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 645, fig. major, minor described, Senior synonym of nigridens, lacerta)