Solenopsis pulleni

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Solenopsis pulleni
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Solenopsis
Species complex: pygmaea
Species: S. pulleni
Binomial name
Solenopsis pulleni
Pacheco, Mackay & Moreno, 2013

Solenopsis pulleni holotype side.jpg

Solenopsis pulleni holotype top.jpg

Specimen labels

Solenopsis pulleni was collected in a grassy playa surrounded by a ring of mesquite.


A New World thief ant that is a member of the pygmaea species complex.

Pacheco and Mackay (2013) – Worker - This species concolorous pale yellow with an elongated and coarsely punctated head. The cuticle is translucent, making the eyes difficult to see. The lateral clypeal teeth are well developed while the extralateral teeth are bumps. It is not very pilose, with short erect and suberect hairs of relatively equal length (0.02-0.03 mm) on all body surfaces.

Solenopsis pulleni may be confused with Solenopsis tonsa (Florida and Texas) but can be distinguished by the shape of the head, which is larger, wider and more robust with S. tonsa and thin, with straight lateral edges with S. pulleni. Additionally, S. pulleni is similar to Solenopsis subterranea (USA to Colombia and Venezuela). Solenopsis pulleni can be separated based on the much longer head compared to that of S. subterranea (CI 74.1-83.3 [77.2]).

Keys including this Species


United States: New Mexico. Known only from the type locality.

Distribution based on Regional Taxon Lists

Nearctic Region: United States (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb



Known only from the worker caste.


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

  • pulleni. Solenopsis pulleni Pacheco, Mackay & Moreno, in Pacheco & Mackay, 2013: 280, figs. 251-252, map 60 (w.) U.S.A.

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



Measurements (n=4). TL 1.38-1.44 (1.43); HL 0.390-0.408 (0.396); HW 0.276-0.294 (0.284); EL 0.024; ED 0.018; SL 0.210-0.222 (0.215); FSL 0.066-0.078 (0.072); CI 127.0-136.1 (132.2); SI 52.9-56.9 (54.2); PL 0.072; PW 0.090-0.096 (0.092); PI 75.0-80.0 (78.8); PPL 0.090-0.102 (0.098); PPW 0.108; PPI 83.3-94.4 (90.3); WL 0.288-0.300 (0.294); PSL 0.018; PSW 0.018.

Concolorous pale yellow; head elongate, dorsal and ventral surfaces flat, sides of head straight, posterior border deeply concave; lateral clypeal teeth well developed, medial tooth absent, extralateral bumps weakly developed; scape extends slightly more than half length of head; eye barely visible, same color as cuticle, ommatidia not evident; mesosoma and petiole as in other members of the complex.

Short (0.020 mm), erect hairs sparse on head, antenna not very hairy, especially club, scape with few suberect hairs; all body surfaces with scattered erect and suberect hairs.

Type Material

Holotype worker [[[MCZC|Museum of Comparative Zoology]]] and 15 paratype workers (American Museum of Natural History, California Academy of Sciences, William and Emma Mackay, Humboldt Institute, Los Angeles County Museum of Natural History, MCZC, Museu Paraense Emilio Goeldi, Museu de Zoologia da Universidade de Sao Paulo, National Museum of Natural History), USA, New Mexico, Dona Ana Co., Jornada Playa, 8-x-1986, B. Pullen #10.


Named to honor Barry Pullen, who collected the type series, as well as several other interesting ants.