Monomorium majeri

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Monomorium majeri
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. majeri
Binomial name
Monomorium majeri
Heterick, 2001

One of the two type collections of this species was collected in mallee.


Heterick (2001) - A member of the bicorne group. Monomorium majeri appears to have a very localized distribution in the Murchison area, where it occurs sympatrically with the rather similar Monomorium striatifrons. When compared with the latter species, M. majeri can readily be distinguished by its larger eye, and the characters of the alitrunk, nodes and gaster listed above.

Heterick (2009) - A large, for Monomorium, reddish species.

Keys including this Species


Heterick (2009) - Very limited distribution east of Geraldton, WA.

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




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

  • majeri. Monomorium majeri Heterick, 2001: 372, figs. 23, 54 (w.) AUSTRALIA.

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



Holotype. HML 4.86; HL 1.87; HW 1.78; Cei 95; SL 1.09; SI 61; PW 0.95. Other. HML4.67-5.00; HL 1.75-1.99; HW 1.75-1.92; Cel 93-104; SL 1.06-1.17; SI 57-63; PW 0.69-0.90 (14 measured).

As for the worker of Monomorium striatifrons, but with the following apomorphies.

Head. Head cordate; vertex strongly concave; frons microreticulate and striolate with erect and suberect setae. Compound eyes ovoid; eye large, eye width greater than 1.5 x greatest width of antennal scape. Median clypeal carinae produced apically as pair of pronounced teeth. Basal mandibular tooth not enlarged.

Alitrunk. Promesonotal sculpture present in form of uniform microreticulation with few mesopleural striolae. Propodeal sculpture present as uniform microreticulation, with few or no striae or costulae; propodeal processes absent (propodeum angulate in profile), or present on posterior propodeal angles as small denticles or sharp flanges. Propodeal angle absent, or present; declivitous face of propodeum flat. Erect and suberect propodeal setae >5.

Petiole. Petiolar node tumular and inclined posteriad; sculpture present in form ofmicroreticulation. Anteroventral process always present as pronounced spur. Height ratio of petiole to postpetiole near 4:3; height-length ratio of postpetiole near 3:4.

Gaster. Pilosity of first gastral tergite consisting of combination of appressed setulae and longer, erect and suberect setae.

General characters. Colour of alitrunk, petiole and postpetiole reddish-orange to crimson, head darker (frons anteriorly infuscated in some individuals), gaster, antennae, and legs dark red-brown. Worker caste monomorphic.

Type Material

Holotype. Worker (top point), Western Australia, Tardun, 90 miles E Geraldton, 22.v.1963, C. T. Mercovich, mallee 400ft, ANIC vial66-54 (Australian National Insect Collection). Paratypes. Western Australia: 2 workers, same data as holotype (ANIC); 3 workers, “Woongowdy” [ = Wongoondy], 19.v.l963, C. T. Mercovich, ANIC vial no. 66-55 (MCZ).


Named in honour of Dr Jonathan Majer, of the School of Environmental Science, Curtin University of Technology, Western Australia.