Technomyrmex bicolor

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Technomyrmex bicolor
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dolichoderinae
Genus: Technomyrmex
Species: T. bicolor
Binomial name
Technomyrmex bicolor
Emery, 1893

Technomyrmex bicolor casent0905071 p 1 high.jpg

Technomyrmex bicolor casent0905071 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Technomyrmex bicolor.


Bolton (2007) - A member of the Technomyrmex bicolor group. The colour pattern of bicolor, with head and gaster uniformly very dark brown and the mesosoma, petiole and all the appendages a strongly contrasting yellow, is unique in the genus. Some species in the bicolor group have the head and mesosoma lighter than the gaster but no other has the above arrangement.

Keys including this Species


Distribution based on Regional Taxon Lists

Oriental Region: India, Sri Lanka (type locality).
Palaearctic Region: China.

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.

  • bicolor. Technomyrmex bicolor Emery, 1893f: 249 (w.) SRI LANKA. See also: Bolton, 2007a: 72.

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



Bolton (2007) - TL 2.9, HL 0.62, HW 0.55, SL 0.70, PW 0.40, WL 0.82. Indices: CI 89, SI 127, OI 27, EPI 62, DTI 135.

Dorsum of head behind clypeus entirely lacks setae. Anterior clypeal margin with a semicircular median notch which is conspicuous and has sharply defined margins; inner margin of notch rounds into lateral portion of anterior c1ypeal margin. Posterior margin of head shallowly indented medially in full-face view and outer margins of eyes just fail to break the outline of the sides. Dorsum of mesosoma and declivity of propodeum without setae. Metathoracic spiracles very close to metanotal groove. In profile the length of the propodeal dorsum is slightly greater than the depth of the declivity to the spiracle. First gastral tergite without setae; second gastral tergite with 1 pair of setae (the sclerite is abraded, it is possible that 2 pairs were originally present); third gastral tergite with 2 - 3 pairs; tergite 4 is embedded in glue but 2 - 3 pairs of setae should probably be present. Strikingly bicoloured species: head capsule and gaster very dark brown, almost black; mandibles, antennae, mesosoma, petiole and all leg segments the same shade of clear yellow.

Type Material

Bolton (2007) - Syntype worker, Sri Lanka: Kandy (E. Simon) (Museo Civico di Storia Naturale, Genoa) [examined].

  • Syntype, uncertain, Sri Lanka, museum unknown (prob. MCSN (Genoa)).


  • Bolton, B. 2007b. Taxonomy of the dolichoderine ant genus Technomyrmex Mayr (Hymenoptera: Formicidae) based on the worker caste. Contributions of the American Entomological Institute. 35(1):1-149.
  • Emery, C. 1893h. Voyage de M. E. Simon à l'île de Ceylan (janvier-février 1892). Formicides. Ann. Soc. Entomol. Fr. 62: 239-258 (page 249, worker described)