Pheidole impressa

Nothing is known about the biology of impressa.

Identification
See the description in the nomenclature section.

Distribution
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.

Nomenclature

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

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.



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

Type Material
BRAZIL: Ceará, col. M. E. Simon. - as reported in Wilson (2003)

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

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.