Tetramorium infraspinum

AntWiki: The Ants --- Online
Tetramorium infraspinum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Tetramorium
Species: T. infraspinum
Binomial name
Tetramorium infraspinum
Forel, 1905

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Specimen Labels

Nothing is known about the biology of Tetramorium infraspinum.

Identification

A member of the Tetramorium tonganum-species group.

Bolton (1977) - One of the two species of the Indo-Australian region to lack propodeal armament, infraspinum is quickly separated from Tetramorium tenuicrine, the other species with unarmed propodeum, by the fact that the antennae are II-segmented in tenuicrine and the body is mostly unsculptured.

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.

  • infraspinum. Tetramorium infraspinum Forel, 1905c: 14 (w.) INDONESIA (Java). See also: Bolton, 1977: 127.

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

Description

Worker

Bolton (1977) - TL 3.3, HL 0.70, HW 0.62, CI 90, SL 0.48, SI 77, PW 0.50, AL 0.84.

Anterior clypeal margin entire; mandibles striate. Antennal scrobes broad but shallow, extending back well beyond the level of the eye. Maximum diameter of the eye c. 0.14. Occipital margin feebly concave in full-face view, the sides of the head more or less straight. Alitrunk convex in profile; propodeum unarmed, with only an obtuse angle separating the sloping dorsum from the declivity. Metapleural lobes long, broadly triangular and very conspicuous. Petiole in profile with anterior and posterior faces roughly parallel, the dorsum feebly convex. In dorsal view petiole subglobular, about as broad as long; postpetiole broader than long. Dorsal surfaces of head, alitrunk and pedicel segments finely reticulate-rugulose, the median clypeal carina more strongly developed than the surrounding sculpture. Head and alitrunk with a fine superficial punctulation between the rugulae. Gaster un sculptured but with some enlarged hair-pits in the basal half. Fine, dense, relatively short hairs abundant on all dorsal surfaces but the antennal scapes and dorsal (outer) surfaces of the middle and hind tibiae only with short, dense, strongly curved hairs, without elongate straight erect or suberect stouter hairs. Colour uniform blackish brown, the appendages mid-brown.

Type Material

Bolton (1977) - Holotype worker, Java: Tjibodas, iii.1904 (K. Kraepelin) (Musee d'Histoire Naturelle Genève) [examined].

References

References based on Global Ant Biodiversity Informatics

  • Bolton B. 1977. The ant tribe Tetramoriini (Hymenoptera: Formicidae). The genus Tetramorium Mayr in the Oriental and Indo-Australian regions, and in Australia. Bulletin of the British Museum (Natural History). Entomology 36:67-151.
  • 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
  • Forel A. 1905. Ameisen aus Java. Gesammelt von Prof. Karl Kraepelin 1904. Mitt. Naturhist. Mus. Hambg. 22: 1-26.
  • Roncin E. 2002. Two new Tetramorium species (Hymenoptera: Formicidae) from Vietnam with a discussion of the mixtum, tonganum, and scabrosum groups. Sociobiology 40: 281-292.