Monomorium elegantulum has the widest distribution of any member of the falcatum-group, and can be found throughout the drier woodland areas of temperate Australia. (Heterick 2001)
Heterick (2001) - A member of the falcatum group. This species resembles Monomorium falcatum in many morphological aspects, but is distinguished from that species by its much smaller size. Monomorium elegantulum may also be distinguished from the similar-sized Monomorium decuria by the possession of 12-segmented antennae.
Keys including this Species
- Key to Australian Monomorium Species
- Key to Monomorium of the southwestern Australian Botanical Province
Distribution based on Regional Taxon Lists
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.
- elegantulum. Monomorium elegantulum Heterick, 2001: 380, figs. 24, 57 (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 1.49; HL 0.62; HW 0.57; Cel 93; SL 0.32; SI 56; PW 0.34. Other. HML 1.51-1.81; HL 0.61-0.72; HW 0.59-0.74; Cei 95-104; SL 0.38-0.44; SI 59-72; PW 0.32-0.42 (18 measured).
As for the worker of Monomorium falcatum, but with the following apomorphies.
Head. Vertex of head capsule planar; frons densely foveate and microreticulate with combination of appressed setulae and erect and suberect setae. (Viewed from front) compound eyes set at midpoint of each side of head capsule. Longest lateral anterior clypeal setae long, extending beyond dorsal margin of closed mandibles. Posteromedial clypeal margin level with posterior surface of antennal fossae. Anterior tentorial pits equidistant between mandibular insertions and antennal fossae. Maximum number of mandibular teeth and denticles: four; apical and basal mandibular margins meeting in tooth or denticle.
Alitrunk. Promesonotum with uniform microreticulation and dorsal foveae; dorsal promesonotal face convex anteriad, otherwise flattened; erect and suberect promesonotal setae >5; setulae appressed. Mesonotal suture absent. Metanotal groove absent. Propodeal angle absent; length ratio of dorsal face to declivitous face near 2: 1. Propodeal setulae appressed.
Petiole and postpetiole. Petiolar node tumular and inclined posteriad; Ratio of greatest node breadth (viewed from front) to greatest node width (viewed in profile) near 4:3 to near 1:1. Anteroventral process always present as pronounced spur. Ventral lobe present in some individuals.
General characters. Colour light orange. Worker caste monomorphic.
Holotype. Worker, Western Australia, Mukinbudin, 25.i.1988, M. Jacobs, soil, native veg., cara. park near town, 374/6MonBH48 (Australian National Insect Collection). Paratypes. New South Wales: 13 workers, Nyngan, 10.x.1946, J. Armstrong, Chelaner 12 seg. antennae det. R. W. Taylor 1975 (ANIC); 6 + 10 (1 head missing) workers, Bogan R., J. Armstrong, Chelaner 12 seg. antennae det. RWT. [R. W. Taylor] 1975. (The Natural History Museum and Museum of Comparative Zoology).
- Holotype, worker, Mukinbudin, Western Australia, Australia, ANIC32-015731, Australian National Insect Collection.
- Paratype, 13 workers, Nyngan, New South Wales, Australia, Australian National Insect Collection.
- Paratype, 6 workers, Bogan River, New South Wales, Australia, The Natural History Museum.
- Paratype, 10 workers (1 missing head), Bogan River, New South Wales, Australia, Museum of Comparative Zoology.
Latin: “having a very fine appearance”.
- Heterick, B. E. 2001. Revision of the Australian ants of the genus Monomorium (Hymenoptera: Formicidae). Invertebrate Taxonomy. 15:353-459. PDF (page 380, figs. 24, 57 worker described)