Mayriella overbecki Viehmeyer, Shattuck, S. O. & Barnett, N. J., 2007

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: 446-447

publication ID


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scientific name

Mayriella overbecki Viehmeyer

n. stat.

Mayriella overbecki Viehmeyer  HNS  , 1925, n. stat.

Figures 13 - 16

Mayriella overbecki Viehmeyer  HNS  , 1925: 26 (removed from synonymy with M. abstinens  HNS  ).


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 Mayriella  HNS  , 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 overbecki  HNS  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. abstinens  HNS  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.


Switzerland, Basel, Naturhistorisches Museum


Australia, Australian Capital Territory, Canberra City, CSIRO, Australian National Insect Collection