Axinidris occidentalis

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Axinidris occidentalis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dolichoderinae
Genus: Axinidris
Species: A. occidentalis
Binomial name
Axinidris occidentalis
Shattuck, 1991

MCZ ENT Axinidris occidentalis hal4.jpg

MCZ ENT Axinidris occidentalis had4.jpg

Paratype Specimen Label

Axinidris occidentalis was collected from an unidentified ant-plant, a habit shared with other Axinidris.

Identification

Snelling (2007) - Scape and pronotum without erect hairs; pronotum weakly shiny, sharply sculptured and densely pubescent; medial carina present; T3-T4 each with several erect hairs.

In A. occidentalis the pronotum lacks erect hairs, but they are present on gastral terga 3 and 4, and the distance across the propodeal spines is subequal to the propodeal width, a combination of features unique to this western species.

Shattuck (1991) - A. occidentalis can be separated from other species by the combination of no erect hairs on the pronotum, the propodeal spine width subequal to the propodeal width, and the presence of erect hairs on the gaster.

Identification Keys

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Liberia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Species of Axinidris appear to nest exclusively within hollow plant stems, both living and dead, and in rotten wood. They are found in forested areas throughout the Afrotropical region, but are most abundant and diverse in the moist equatorial forests. Workers are primarily arboreal foragers, but may occasionally forage in ground litter.

Castes

Known only from the worker caste.

Nomenclature

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

  • occidentalis. Axinidris occidentalis Shattuck, 1991: 118, figs. 26-28, 35 (w.) LIBERIA. See also: Snelling, R.R. 2007: 569.

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

Description

Worker

(n=4). OOD 0.31-0.35, EL 0.21-0.23, HL 0.88-0.95, EW 0.10-0.13, HW 0.88-0.96, CNW 0.05, CND 0.07-0.08, SL 0.57-0.65, AL 1.02-1.10, PpW 0.34-0.41, SW 0.36-0.41, CI 0.99-1.01, CNI 1.33-1.53, REL 0.23-0.25, ScI 0.64-0.69, SpI 1.37-1.57.

Pronotal hairs absent; body yellowish red, the tarsi light yellow; HW >0.85; SL <0.66.

Head sculpture similar to Apalligastrion. Head with two pairs of short erect hairs (one pair near the vertex, one pair on the frontal lobes), and one pair of long hairs on the clypeus. Erect and suberect hairs absent from the antennal scapes. Entire alitrunk weakly punctate to weakly imbricate. Pronotum lacking erect hairs. Propodeal spiracles as in A.tridens. Medial propodeal carina expanded slightly near the propodeal angle and located just anterior of a line drawn between the propodeal spiracles posterior to a line drawn between the propodeal spines. Propodeal spines directed posterolaterally with the outer surfaces concave, the distal ends approximately the same width as the maximum propodeal width, and the area between them concave. Erect hairs present on gastric tergites 3 and 4. Body colour yellowish red with the gaster, clypeus, mandibles and antenna lighter, and the tarsi yellow.

Type Material

References