Monomorium bihamatum is reasonably common throughout temperate Australia, where it is mostly associated with mallee and harvests mallee seeds (label data). However, the worker from Beonaddy Swamp, near Perth, was found in mixed Eucalyptus woodland. (Heterick 2001)
Heterick (2001) - A member of the rubriceps group. Although this species resembles Monomorium legulum in gross morphology, the nature of the cuticular sculpture places M. bihamatum near M. longiceps. Some workers, including the holotype, also have vestigial denticles at the propodeal angle.
Heterick (2009) - Monomorium bihamatum and Monomorium legulum are very similar red species. The latter is distinguished chiefly by a darker band on the mesosoma.
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.
- bihamatum. Monomorium bihamatum Heterick, 2001: 419, figs. 43, 73, 77, 78 (w.) AUSTRALIA.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Holotypes. HML 2.89; HL 0.97; HW 0.87; Cel 90; SL 0.80, SI 92; PW 0.64. Others. HML 2.44-3.22; HL 0.86-1.05; HW 0.75-0.96; Cei 82-93; SL 0.69-0.82; SI 81-96; PW 0.48-0.69 (30 measured).
As for the worker of Monomorium longiceps, but with the following apomorphies.
Head. Vertex of head capsule slightly concave to planar. Eye large, eye width greater than 1.5x greatest width of antennal scape. Frontal lobes parallel straight. Venter of head capsule with elongate, basket-shaped setae in at least some individuals.
Alitrunk. Promesonotal sculpture present in form of uniform microreticulation with few mesopleural striolae. Mesonotal suture absent. Propodeal processes absent (propodeum smoothly rounded in profile or with slight hump at propodeal angle), or vestigial (propodeum angulate in profile); lobes present as blunt flanges. Propodeal angle absent, or present.
Petiole and postpetiole. Petiolar spiracle lateral and in anterior sector of petiolar node. Petiolar node cuboidal; sculpture present in form of microreticulation, or present; petiolar node rugose. Height ratio of petiole to postpetiole near 1: 1; height-length ratio of postpetiole near 2: 1 to near 4:3. Sculpture present in form of microreticulation. Ventral process absent or vestigial, or present and distinct.
General characters. Colour of head, trunk, and appendages reddish-orange, gaster orange. Worker caste monomorphic
Holotype. Worker (top point), Western Australia, Balladonia, 13.i.1970, B. B. Lowery, limestone mallee, 10" rainfall, 6 pm, Chelaner (Australian National Insect Collection). Paratypes. New South Wales: 5 workers, Condobolin, 11.i.1967, B. B. Lowery, 650 [?ft], common on mallee gums, returning with mallee seeds, nest in sand (Museum of Comparative Zoology). South Australia: 3 workers, Streaky Bay, 23.ix.1957, B. B. Lowery, limestone mallee, on mallee gums, Chelaner (The Natural History Museum). Western Australia: I worker with same data as the holotype (ANIC), 2 workers and 1 ergatoid, Esperance district, 4.i.1966, C. Mercovich (BMNH); 6 workers, 38 miles N of Balladonia Hsd. 31°55'S, 127°49'E, 11.xi.1969, R. W. Taylor, Key's field notes, trip 163, stop 19542.1, ANIC ant vial no. 9.207 (ANIC).
- Holotype, worker, Balladonia, Western Australia, Australia, Lowery,B.B., ANIC32-015718, Australian National Insect Collection.
- Paratype, 6 workers, 38mi. N Balladonia Homestead, 31°55’S 127°49’E, Western Australia, Australia, Australian National Insect Collection. ,
- Paratype, 1 worker, Balladonia, Western Australia, Australia, Australian National Insect Collection.
- Paratype, 2 workers, 1 ergatoid queen, Esperance district, Western Australia, Australia, The Natural History Museum.
- Paratype, 3 workers, Streaky Bay, South Australia, Australia, The Natural History Museum.
- Paratype, 5 workers, Condobolin, New South Wales, Australia, Museum of Comparative Zoology.
- Heterick, B. E. 2001. Revision of the Australian ants of the genus Monomorium (Hymenoptera: Formicidae). Invertebrate Taxonomy. 15:353-459. PDF (page 419, figs. 43, 73, 77, 78 worker described)
- Heterick, B. E. 2009. A guide to the ants of South-western Australia. Records of the Western Australian Museum, Supplement 76:1-206. PDF