Technomyrmex convexifrons

AntWiki: The Ants --- Online
Technomyrmex convexifrons
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dolichoderinae
Genus: Technomyrmex
Species: T. convexifrons
Binomial name
Technomyrmex convexifrons
Karavaiev, 1926

Nothing is known about the biology of Technomyrmex convexifrons.

Identification

Bolton (2007) - A member of the Technomyrmex strenuus group. Most closely related to Technomyrmex strenuus but that species does not have elevated setae on the tibiae. The eyes of convexifrons appear to be slightly larger than in strenuus and set slightly further forward, compare OI and EPI above with strenuus OI 20 - 24, EPI 80 - 95, though these results may not be trustworthy because of the paucity of material. The mesonotal and propodeal dorsa of strenuus are more strongly and intensely sculptured than in convexifrons and in profile the propodeal dorsum rounds into the declivity in convexifrons, whereas the two surfaces meet in a blunt angle in strenuus; see notes under strenuus.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Indonesia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.
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Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.
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Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • convexifrons. Technomyrmex convexifrons Karavaiev, 1926d: 443 (w.) INDONESIA (Sumatra). See also: Bolton, 2007a: 77.

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

Description

Worker

Bolton (2007) - TL 2.6, HL 0.60, HW 0.57, SL 0.51, PW 0.37, WL 0.68. Indices: CI 95, SI 89, OI 26, EPI 72, DTI 119.

Frontal carina with 2 - 3 setae to the level of the anterior margin of the eye. Posterior to this with 4 - 5 pairs on the dorsum itself and with an additional 4 - 6 setae across the posterior margin. Longest setae on head at least equal to maximum diameter of eye, usually somewhat longer. Scapes without setae. Dorsum of head glassy smooth, unsculptured except for pits from which setae arise, and with sparse pubescence that does not conceal the surface. In full-face view the anterior clypeal margin is almost transverse, the posterior margin of the head very feebly concave medially; eyes break the outline of the sides of the head. Pronotal dorsum mostly smooth, with only vestiges of sculpture; dorsal mesonotum weakly microreticulate; propodeal dorsum more densely microreticulate to minutely reticulate-punctulate. All dorsal surfaces of mesosoma, including propodeum, with numerous setae; propodeal declivity with at least 1 marginal pair. With propodeum in profile the dorsum rounds into the declivity. Dorsal (outer) surfaces of middle and hind tibiae each with at least one elevated long seta present, in the apical half; length of the setae slightly less than the tibial width. Gastral tergites 1 - 4 each with numerous setae, the longest of them longer than the maximum diameter of the eye. Gastral tergites 1 - 2 unsculptured, smooth and polished; pubescence on these sc1erites sparse. Head and gaster dark brown; most of mesosoma slightly lighter, the pronotum slightly lighter than the remainder and the propodeum about the same colour as the gaster.

Type Material

Bolton (2007) - Syntype workers, Indonesia: Sumatra, Tapung kiri, no. 2756 (0. John) (Institute of Zoology, Ukrainian Academy of Science) [examined].

Only a single card triangle, on a pin originally of three syntypes, retains a complete specimen. Of the upper syntype only the gaster remains. The middle specimen is complete but has the head severely crushed. The lower mount has no specimen.

References

References based on Global Ant Biodiversity Informatics

  • Bolton B. 2007. Taxonomy of the dolichoderine ant genus Technomyrmex Mayr (Hymenoptera: Formicidae) based on the worker caste. Contributions of the American Entomological Institute 35(1): 1-150.
  • Chapman, J. W., and Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327
  • Karavaiev V. 1926. Ameisen aus dem Indo-Australischen Gebiet. Treubia 8: 413-445.
  • Shattuck S. O. 1994. Taxonomic catalog of the ant subfamilies Aneuretinae and Dolichoderinae (Hymenoptera: Formicidae). University of California Publications in Entomology 112: i-xix, 1-241.