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Species: Mayriella overbecki   Viehmeyer, 1925 

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Taxonomic History (provided by Barry Bolton, 2019)

Mayriella overbecki Viehmeyer, 1925a PDF: 26 (w.q.) AUSTRALIA. Australasia. AntCat AntWiki HOL

Taxonomic history

Junior synonym of Mayriella abstinens: Wheeler, 1935e PDF: 151 (footnote).
Revived from synonymy: Shattuck & Barnett, 2007: 446.


  Geographic regions (According to curated Geolocale/Taxon lists):
    Oceania: Australia
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Shattuck, S. O. & Barnett, N. J., 2007, Revision of the ant genus Mayriella., Advances in ant systematics (Hymenoptera: Formicidae): Homage to E. O. Wilson - 50 years of contributions. (Memoirs of the American Entomological Institute 80), pp. 437-458

Mayriella overbecki ViehmeyerHNS, 1925, n. stat.

Figures 13 - 16

Mayriella overbecki ViehmeyerHNS, 1925: 26 (removed from synonymy with M. abstinensHNS).


Worker (NHMB) (examined) and 1 queen (MCZC) (examined) syntypes from Australia, Trial Bay , New South Wales.


Australia, New South Wales: Brindle Creek , Wiangaree State Forest (collector unknown) (ANIC, MCZC); Bruxner Park , via Coffs Harbour (Monteith, G.) (ANIC); Dorrigo Natl Pk, E end Blackbutt Track (Newton, A. & Thayer, M.) (ANIC, MCZC); Mt. Warning (Lowery, B. B.) (ANIC).


This species can be separated from others in the genus by the combination of small, scattered pits on the mesosomal dorsum, weak sculpturing in the posterior sections of the antennal scrobes and the petiole with a relatively long posterior face and acute angle.


Sculpturing in posterior section of antennal scrobe at most weakly developed and always indistinct; sculpturing on dorsal mesosoma consisting of small, widely spaced pits; propodeal spines relatively short and thick; dorsal surface of petiole in lateral profile uniformly convex, without distinct dorsal and posterior faces and forming a blunt angle with the anterior face; in dorsal view, postpetiole with the anterior and posterior regions approximately the same width (the region connecting them either flat or weakly convex); postpetiole and gaster lacking erect hairs dorsally.

Measurements. Worker (n = 7) - CI 0.91 - 0.94; HL 0.51 - 0.57; HTL 0.30 - 0.35; HW 0.48 - 0.53; ML 0.54 - 0.62; PW 0.33 - 0.37; SI 0.62 - 0.68; SL 0.30 - 0.35.


This is one of the rarer species of MayriellaHNS, being known from only five collections. These collections were from rainforest in north-eastern New South Wales, with nests being found in rotten logs.

Mayriella overbeckiHNS was established for a number of workers and a queen collected at Trial Bay, New South Wales. It was considered a junior synonym of M. abstinensHNS by Wheeler (1935), a treatment followed by subsequent authors. Wheeler, however, based his synonymy on Viehmeyer's original description and did not examine type material. This synonymy was curious given that Wheeler established two new species based on subtle characters and slight differences. This taxon is here removed from synonymy and recognized as a distinct species.

Specimen Habitat Summary

Found most commonly in these habitats: 3 times found in subtropical rainforest, 2 times found in rainforest.

Found most commonly in these microhabitats: 1 times under bark of rotting log, 1 times red-rotten log.

Elevations: collected from 609 - 740 meters, 692 meters average

Type specimens: syntype of Mayriella overbecki: casent0908923; type of Mayriella overbecki: focol1942, focol1940-1, focol1940-2, focol1941-1, focol1941-2, focol1941-3

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