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Species: Tetramorium anodontion   Bolton, 1979 

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Taxonomic History (provided by Barry Bolton, 2020)

Tetramorium anodontion Bolton, 1979 PDF: 156, figs. 22, 23 (w.) MADAGASCAR. Malagasy. AntCat AntWiki HOL
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Africa: Madagascar
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Bolton, B., 1979, The ant tribe Tetramoriini (Hymenoptera: Formicidae). The genus Tetramorium Mayr in the Malagasy region and in the New World., Bulletin of the British Museum (Natural History) Entomology 38, pp. 129-181

Tetramorium anodontionHNS sp. n.

(Figs 22, 23)

Holotype worker. TL 2.6, HL 0.68, HW 0.60, CI 88, SL 0.48, SI 80, PW 042, AL 0.74.

Mandibles appearing dull and finely shagreened. (This appears to be an artifact caused by the presence of a waxy layer on the surface of the mandibular blades. In thoroughly cleaned paratypes the mandibles are shining with scattered pits.) Anterior clypeal margin entire, without notch or impression medially. Frontal carinae strong, convex along their length and surmounted by a narrow rim or flange, tending to peter out occipitally and become indistinguishable from the remaining sculpture. Eyes of moderate size, their maximum diameter 0.15, about 0.25 x HW. With the head in full-face view the sides immediately behind the eyes lacking a projecting stout hair. Outline of alitrunk as in Fig. 23, the metanotal groove very weakly marked. Propodeum absolutely unarmed, without trace of spines or teeth. Metapleural lobes broad and bluntly triangular. Node of petiole in dorsal view broader than long. Dorsum of head strongly sculptured, with numerous fine longitudinal rugulae and the interspaces packed with conspicuous reticulate-puncturation which also covers the scrobal areas. Dorsal alitrunk, petiole and postpetiole finely reticulate-rugulose, all interspaces covered by dense, distinctive reticulate-puncturation. First gastral tergite with faint shagreening basally but otherwise unsculptured. Short, stout, blunt hairs present on all dorsal surfaces of head and body. Colour medium brown, dull.

Paratype workers. TL 2.5 - 3.1, HL 0.62 - 0.76, HW 0.57 - 0.68, CI 88 - 93, SL 0.45 - 0.54, SI 76 - 80, PW 0.40 - 0.47, AL 0.72 - 0.86 (18 measured). Maximum diameter of eye 0.14 - 0.17, about 0.24 - 0.25 x HW. As holotype but in a number of workers the waxy layer on the body has been lost so that in some the gaster appears dull, in others polished. In the clean specimens the shagreening of the first gastral tergite is more conspicuous.

Holotype worker, Madagascar: ' Bekonazy to 5 km S. forest W baobabs (n. of Morondava) 24 Mar. 1969, dry forest. M 214, rot. pod of legum tree, shade' (W. L. Brown) (MCZ, Cambridge). Paratypes. 28 workers with same data as holotype (MCZ, Cambridge; BMNH).

T. anodontionHNS is unique in the Malagasy fauna of TetramoriumHNS as it is the only species yet discovered in which the propodeum is completely unarmed.

Specimen Habitat Summary

Found most commonly in these habitats: 36 times found in tropical dry forest, 5 times found in Uapaca woodland, 3 times found in Shrubland, 8 times found in gallery forest, 3 times found in savannah woodland, 2 times found in spiny forest/thicket, 2 times found in grassland, 2 times found in dry forest, 1 times found in gallery forest, TS3, 2 times found in montane rainforest, ...

Found most commonly in these microhabitats: 19 times sifted litter (leaf mold, rotten wood), 6 times ex rotten log, 6 times under stone, 1 times sifted litter, 2 times leaf litter, 4 times ground forager(s), 1 times pitfall trap, 1 times rot. pod of legume tree, shade, 2 times ex soil, 1 times rotten pod of legum, tree shade; PFA, 3, 1 times rotten pod of legum tree shade, ...

Collected most commonly using these methods: 12 times MW 50 sample transect, 5m, 3 times MW 25 sample transect, 5m, 9 times pitfall trap, PF 50 traps, 11 cm dbh with water, soap, formalin, nonlinear placement, 3 times pitfall trap, PF 50 tube sample transect, 5m, 2 times pitfall trap, PF 20 tube sample transect, 10m, 1 times 10 Maxiwinks, 2 times MW 20 sample transect, 10m, 3 times yellow pan trap, YP 25 trap transect, 2 times Malaise trap, 1 times MW 20 sample transect, 5m, 1 times M214, ...

Elevations: collected from 6 - 1640 meters, 605 meters average

Collect Date Range: collected between 1969-03-24 and 2013-03-01

Type specimens: Holotype: casent0906149; paratype: casent0235215

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