Epopostruma lattini

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Epopostruma lattini
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Epopostruma
Species: E. lattini
Binomial name
Epopostruma lattini
Shattuck, 2000

Epopostruma lattini holotype ANIC32-003693 side 32-AntWiki.jpg

Epopostruma lattini holotype ANIC32-003693 top 32-AntWiki.jpg

Specimen labels

Epopostruma lattini is known from two disjunct populations, one in southern Western Australia and the other in southern South Australia. It has been found at honey baits on trees in the evening and in leaf litter, in dry sclerophyll and mallee habitats.


This large, distinctive ant can be recognised by the distinctive head shape, the bispinose lateral postpetiolar margins, by having the area immediately above the eye angular but no toothed and in having the posterolateral margin of the postpetiole (immediately anterior of the gaster) strongly concave.

Keys including this Species


Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


While Epopostruma can be fairly common they are often overlooked. Workers are slow-moving and most lie motionless when disturbed. Their nests are small, with up to about 100 workers, and are found in open soil or in soil under rocks, logs or small sticks. They also nest in cracks in large rocks. When nesting in open soil they are often found near the bases of trees. Tree-trunks are clearly an important substrate for foraging workers.

Almost all species forage at night although one species is known to occasionally forage on mallee stems during the day. They are also regularly found in leaf litter. Workers have been attracted to honey baits on trees in the late evening and at night. Their elongate and specialised mandibles form a type of snap-trap which is used to captured soft-bodied prey such as Collembola.



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

  • lattini. Epopostruma lattini Shattuck, in Bolton, 2000: 60 (w.) AUSTRALIA.

Type Material

Holotype Specimen Labels

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


Holotype worker. TL 5.2mm, HL 1.24mm, HW 1.28mm, CI 103, MandL 0.59mm, MandI 48, SL 0.71mm, SI 55, PronW 0.72mm, ML 1.27mm.

Area immediately above the eye angular. Pronotal spines present, long. Posterior section of metanotum and dorsal surface of the propodeum forming a continuous surface. Posterior face of propodeum between bases of spines and propodeal lobes with very narrow flanges with start below the bases of the spines. Petiolar spines present, long. Anterior face of postpetiole similar in length to or shorter than the dorsal face, the two faces joined by a broad convexity; sides of postpetiole expanded laterally in the form of distinct sharp teeth or spines; their lateral margins strongly concave; posterolateral margin (immediately anterior of gaster) strongly concave. Dorsum of petiole, postpetiole and gaster with numerous long, erect hairs, those on the mesosoma with strongly bent tips, those on petiole, postpetiole and gaster either straight or weakly arched. First gastral tergite and area immediately behind attachment with gaster smooth. Body colour dark yellow-red, ventral region of head, antennae, mandibles and legs lighter, gaster darker, brown.