Brachymyrmex australis pullus

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Brachymyrmex australis pullus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Myrmelachistini
Genus: Brachymyrmex
Species: B. australis
Subspecies: B. australis pullus
Trinomial name
Brachymyrmex australis pullus
Santschi, 1933

Ortiz-Sepulveda et al. (2019) did not include information on this species in their revision as the type series, consisting of a single worker, was destroyed and is not present in the Naturhistorisches Museum, Basel.

Identification

Ortiz-Sepulveda et al. (2019): As the type specimen is not available, we could only re-examine the morphological descriptions of Santschi (1933), from which we conclude that B. longicornis var. pullus seems to be morphologically similar to Brachymyrmex patagonicus and Brachymyrmex bruchi. Brachymyrmex longicornis var. pullus has a shiny body that is black or dark brownish, the scapes surpass the posterior margin of the head, it has large eyes that occupy a third of the sides of the head, and the thorax would have been similar to that of B. longicornis which indicates that the mesonotum did not bulge dorsally above the pronotum in lateral view. Santschi (1933) did not describe the pubescence on the gaster, and so in the above we consider the pubescence to be similar to that of typical B. longicornis (here synonymized to Brachymyrmex australis), B. longicornis var. hemiops (here synonymized to Brachymyrmex aphidicola), and B. longicornis var. immunis (here synonymized to Brachymyrmex admotus). If this assumption were not true, B. longicornis var. pullus would resemble Brachymyrmex cordemoyi and Brachymyrmex obscurior more than B. bruchi and B. patagonicus.

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality).


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • pullus. Brachymyrmex longicornis var. pullus Santschi, 1933e: 122 (w.) ARGENTINA (Misiones).
    • Subspecies of longicornis: Kempf, 1972a: 40; Bolton, 1995b: 82.
    • Unidentifiable taxon; incertae sedis in Brachymyrmex: Ortiz-Sepúlveda, et al. 2019: 533.
    • [Note: Ortiz-Sepúlveda, et al. 2019: 533, record that the holotype of pullus (the only known specimen) has been destroyed in the past, and its original description is inadequate.]
    • As subspecies of australis: Ortiz-Sepulveda et al., 2019: 533 (by implication, as longicornis synonymised with australis).

Description

References