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Species: Tetramorium grassii   Emery, 1895 

Classification:
Download Data

Taxonomic History (provided by Barry Bolton, 2020)

Tetramorium grassii Emery, 1895i PDF: 37 (w.) SOUTH AFRICA. Afrotropic. AntCat AntWiki HOL

Taxonomic history

Mayr, 1901b PDF: 25 (q.).
Senior synonym of Tetramorium algoa, Tetramorium joffrei, Tetramorium inerme laevigatum, Tetramorium mayri, Tetramorium simulans: Bolton, 1980 PDF: 262.

Taxon Page Images:

photo © Philip Herbst, Welgemoed, Cape Town

// Distribution

Distribution:

  Geographic regions (According to curated Geolocale/Taxon lists):
    Africa: South Africa
    Oceania: New Zealand
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Afrotropical, Australasia
  Native to (according to species list records):
    Afrotropical bioregion

Distribution Notes:

upper North Island and Nelson

Biology:

urban areas, on fringe of native habitats

Notes:

first record in NZ; 1941 (Taylor 1961)

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Emery, C., 1895, Voyage de M. E. Simon dans l'Afrique australe (janvier-avril 1893). 3 e mémoire. Formicides., Annales de la Société Entomologique de France 64, pp. 15-56

T. GrassiiHNS, n. sp.

- [[ worker ]]. Fusco-picea, pedunculo obscure ferrugineo, mandibulis, antennis pedibusque testaceis, parce, longe pilosa, pedibus oblique pubescentibus, capite subrectangulari, laminis frontalibus sigmoideis, valde prolongatis, fronte medio carinata, utrinque rugis 5 elevatis sut regularibus, genis et lateribus capitis longitrorsum rugoso-reticulatis, clypeo carinata, mandibulis striatis, antennis crussiusculis, clava; articulo 1 ° vix longiore quam crassiore, thorace longitrorsum rugoso-reticulata, lateribus haud distincte marginata, humeris obtuse angulatis, suturis dorsi obsoletis, metanoti spinis divergentibus, obliquis, parte declivi subsequilongis, petioli laevis et nitidi segmento 1 ° postice cum nodo alto, antice abrupto, postice supra rotundato, 2 ° ovato, paulo latiore quam longiore, abdomine reliquo nitida. - Long. 2 2 / 3 mill.

[[ queen ]]. Rufo-testacea, abdomine piceo, pedibus testaceis, capite ut in operaria sculpto, sed carina frontis obsoleta et mandibulis punctatis, haud striatis, mesonoto scutelloqne longitrorsum rugosis, spinis metanoti brevibns, validis, pedunculi segmento 1 ° cum nodo transverso, squamiformi, superne subtruncate, 2 ° transverse ovato, plus quam dimidio longiore quam latiore. Alae dilute flavescentes, costis et stigmate testaceis. - Long. 3 mill.

Une [[ worker ]] de Cape Town; une [[ queen ]] de Kimberley.

Peut-etre la difference dans la sculpture des mandibules justifierait-elle l'etablissement d'une variete distincte?

Cette Fourmi offre une certaine ressemblance avec T. (Xiphomyrmex) WeitzeckeriHNS, que je decris plus loin, par la structure de la tete et la sculpture, sauf que la ponctuation fondamentale de la tete et du corselet est presque entierement effacee. Les rides du front sont assez regulieres; chez l'ouvriere, une ride mediane est plus elevee que les autres et forme carene; de chaque cote de celle-ci, cinq rides dont la troisieme est plus forte que les autres, mais moins que la carene nudiane. Chez l'ouvriere, le corselet n'est pas distinctement borde; seulement, une ride un peu plus forte represente un rudiment d'arete; sur le milieu du dos, les rides sont effacees. Le 1 er segment du pedicule porte un n oe ud fort eleve, guere plus large que long chez l'ouvriere, tres large et squamiforme chez la femelle; vu de profil, son contour s'eleve droit, puis il forme un angle marque et redescend en arriere en ligne courbe; le 2 e segment est un peu plus large que le precedent, faiblement transverse chez l'ouvriere, fortement chez la femelle-.

Je dedie cette espece a l'habile observateur des Termites, M. le professeur B. Grassi.

Specimen Habitat Summary

Found most commonly in these habitats: 15 times found in montane rainforest, 8 times found in Urban garden in grassland, 7 times found in Afromontane Forest, 6 times found in coastal forest, 8 times found in Milkwood Scrub forest, 4 times found in grassland, 6 times found in Forest - Indigenous, 4 times found in Forest - Indigenous evergreen, 1 times found in indigenous forest ravine, 4 times found in Valley Bushveld, ...

Found most commonly in these microhabitats: 10 times sifted litter (leaf mold, rotten wood), 5 times leaf litter, 1 times ex rotting branch above ground, 5 times ex rotten log, 2 times under stone, 1 times nest under rotting branch on ground, 1 times in rotten, wet wood, 1 times ground forager(s).

Collected most commonly using these methods: 7 times MW 25 sample transect, 5m, 13 times Pitfall trap, 8 times By Hand, 8 times Malaise Trap, 5 times Yellow pan, 4 times Winkler, 7 times Yellow Pan Trap, 5 times Turning over rocks, 3 times Hand collected, 5 times Winkler Bag, 1 times general collecting, ...

Elevations: collected from 1 - 1800 meters, 810 meters average

Collect Date Range: collected between 1897-12-31 and 2019-02-01

Type specimens: Syntype: sam-ent-011963; syntype of Tetramorium grassii: casent0904843; syntype of Tetramorium grassii laevigatum: casent0901183, casent0919649; syntype of Tetramorium grassii simulans: casent0915018; syntype of Tetramorium joffrei: casent0901184; syntype of Tetramorium joffrei algoa: casent0901185; syntype of Tetramorium joffrei: casent0909137



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