Pheidole impressa

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Pheidole impressa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. impressa
Binomial name
Pheidole impressa
Mayr, 1870

Pheidole impressa casent0904362 p 1 high.jpg

Pheidole impressa casent0904362 d 1 high.jpg

Specimen Labels


Nothing is known about the biology of impressa.


See the description in the nomenclature section.

Keys including this Species


From Wilson (2003): Known from Ceará and the neighboring state of Rio Grande do Norte, in northeastern Brazil (Kempf 1972b).

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




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

  • impressa. Pheidole impressa Mayr, 1870b: 985 (s.) BRAZIL. See also: Wilson, 2003: 303. Current subspecies: nominal plus detrita.

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


From Wilson (2003): A very distinct member of the fallax group, easily distinguished as follows.

Major: anterior third of central strip of first gastral tergite longitudinally striate; the whole gastral tergite shagreened; rugoreticulum on each side of head stretches from eye medially to antennal fossa and anteriorly to near the anterior border of head; propodeal spines moderately long and nearly vertical to basal propodeal face; promesonotal dorsum transversely carinulate; all of cephalic dorsum, mesosoma, and waist foveolate and feebly shiny to opaque; postpetiolar node from above trapezoidal.

Minor not seen.

MEASUREMENTS (mm) Holotype major: HW 1.36, HL 1.68, SL 0.92, EL 0.22, PW 0.70.

COLOR Major: body and mandibles medium reddish brown, other appendages light reddish brown.

Pheidole impressa Wilson 2003.jpg

Figure. Unique holotype, major. Minor not seen. Scale bars = 1 mm.

Type Material

BRAZIL: Ceará, col. M. E. Simon. Naturhistorisches Museum Wien, Vienna - as reported in Wilson (2003)


L impressa, marked by impression, possibly referring to the gastral striae. (Wilson 2003)