Mesostruma loweryi

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Mesostruma loweryi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Mesostruma
Species: M. loweryi
Binomial name
Mesostruma loweryi
Taylor, 1973

Mesostruma loweryi casent0172477 profile 1.jpg

Mesostruma loweryi casent0172477 dorsal 1.jpg

Specimen labels

Known from bark traps on Wandoo trunks, hand collections and pitfall traps (Heterick 2009).

Identification

Mesostruma loweryi can be diagnosed by the presence of rounded pronotal corners, scattered, shallow foveolate punctures on the dorsum of the mesosoma and a relatively narrow head (CI < 88).

Keys including this Species

Distribution

Heterick (2009) - WA: Found in bark traps on Wandoo trunks at Dryandra, and also features in hand collected and/or pitfall trap material from Boddington and from Kings Park, near Perth CBD. The taxon is also known from Geraldton and from South Australia.

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Ants in the genus Mesostruma are uncommon and form small colonies in soil, usually under or between rocks. They are predacious, foraging primarily on the ground in leaf litter but also occasionally on low vegetation. Roughly half the species have only been collected once. The remainder of the species are not well known either, at least in terms of the number of collections and what is known regarding their biology.

Castes

Nomenclature

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

  • loweryi. Mesostruma loweryi Taylor, 1973: 35, pl. 4 (w.) AUSTRALIA. See also: Shattuck, in Bolton, 2000: 52.

Type Material

Taxonomic Notes

Taylor (1991) reported on a specimen collected from Geraldton, Western Australia which he placed in an undescribed taxon, Mesostruma sp. no. 1 (ANIC). This specimen compares well with the types of M. loweryi and it is here considered to belong to this species. It should be noted that the collection site of this specimen and the only other known site of this species, the type locality, are separated by some 2300 km, the former being from western Western Australia and the latter from south-eastern South Australia. While this might suggest that these specimens are not conspecific, a similar distribution pattern is known for M. eccentrica, giving support to the proposed placement. (Shattuck 2000)

Description

Worker

Shattuck (2000) - TL 3.6, HL 0.82 - 0.83, HW 0.71 - 0.72, CI 87, ML 0.31 - 0.32, MI 38 - 39, SL 0.47 - 0.49, SI 66 - 68, PW 0.47 - 0.48, AL 0.90 - 0.91 (2 measured). Head relatively narrow (CI < 88). In dorsal view the anterolateral corners of pronotum rounded. Dorsum of mesosoma with scattered, shallow foveolate punctures which are spaced more than their width apart, and with the area between the punctures smooth and lacking sculpturing. Propodeal lamellae with the dorsal and posterior margins flat, the angles between these margins approximately 90 degrees. Sculpturing on the metaplerual gland bulb consisting of weak rugae over a punctate background. Lateral surfaces of postpetiole with well developed wings. First gastral segment immediately posterior of the postpetiole with short, ill-defined rugae. Body colour yellow-red with light infuscation on the dorsum of the head, lateral mesonotum and on the first gastral tergite.

References