Acanthostichus davisi

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Acanthostichus davisi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dorylinae
Genus: Acanthostichus
Species: A. davisi
Binomial name
Acanthostichus davisi
(Smith, M.R., 1942)

Cerapachys davisi casent0010698 profile 1.jpg Cerapachys davisi casent0010698 dorsal 1.jpg Specimen labels

Known only from males. Specimens have been sampled from creosote bush scrub and other desert vegetation at blacklights. They are very abundant at some localities, especially in the state of Chihuahua, Mexico. (Mackay and Mackay 2002)

Identification

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Nearctic Region: United States (type locality).
Neotropical Region: Mexico.
Acanthostichus davisi Distribution.png

Biology

Castes

Male

Nomenclature

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

  • davisi. Cerapachys (Parasyscia) davisi Smith, M.R. 1942b: 64 (m.) U.S.A. Combination in Acanthostichus: Brady et al., 2014: 6.

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

Description

Male

The male holotype of davisi differs from the known males of Syscia augustae as follows: Size larger (3.8 mm.); posterior border of head rounded and merging into each side without forming as definite a subangular posterior corner; all funicular segments except first distinctly longer than broad (less incrassated than in augustae); pronotum almost one-half length of mesonotum; front wing with or without a closed cubital cell; veins more prominent and more nearly enclosing radial and cubital cell (when cubital cell is not completely enclosed); sculpture different, davisi having fine rugulae between inner border of eye and antenna, and similar rugulae on epinotum, especially the sides of epinotum; sixth tergite more coarsely sculptured, subopaquc; color dark brown, almost black.

The paratypes range in length from 3.8 to 4.2 mm.

Type Material

Described from holotype and 3 paratype specimens, each bearing the label "Fort Davis, Tex., Jeff Davis County, 5000 feet, Davis Mountains, Mrs. O. C. Poling, Nov. 15, 1927." These have been assigned United States National Museum Number 56091.

References