Pheidole impressa

AntWiki: The Ants --- Online
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

Subspecies

Nothing is known about the biology of impressa.

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

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

Latitudinal Distribution Pattern

Latitudinal Range: 5.266667° to 5.266667°.

 
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

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

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

Castes

Nomenclature

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

  • 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.

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)

Etymology

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

References

References based on Global Ant Biodiversity Informatics

  • Forel A. 1915. Results of Dr. E. Mjöbergs Swedish Scientific Expeditions to Australia 1910-13. 2. Ameisen. Ark. Zool. 9(16): 1-119
  • Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
  • Groc S., J. H. C. Delabie, F. Fernandez, F. Petitclerc, B. Corbara, M. Leponce, R. Cereghino, and A. Dejean. 2017. Litter-dwelling ants as bioindicators to gauge the sustainability of small arboreal monocultures embedded in the Amazonian rainforest. Ecological Indicators 82: 43-49.
  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
  • Mann W. M. 1916. The Stanford Expedition to Brazil, 1911, John C. Branner, Director. The ants of Brazil. Bulletin of the Museum of Comparative Zoology 60: 399-490
  • Pires de Prado L., R. M. Feitosa, S. Pinzon Triana, J. A. Munoz Gutierrez, G. X. Rousseau, R. Alves Silva, G. M. Siqueira, C. L. Caldas dos Santos, F. Veras Silva, T. Sanches Ranzani da Silva, A. Casadei-Ferreira, R. Rosa da Silva, and J. Andrade-Silva. 2019. An overview of the ant fauna (Hymenoptera: Formicidae) of the state of Maranhao, Brazil. Pap. Avulsos Zool. 59: e20195938.