Tetramorium kali

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Tetramorium kali
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Tetramorium
Species: T. kali
Binomial name
Tetramorium kali
Hita Garcia & Fisher, 2012

Tetramorium kali casent0198973 p 1 high.jpg

Tetramorium kali casent0198973 d 1 high.jpg

Specimen Labels

Known only from the three localities Manongarivo, Montagne d'Ambre, and Marotandrano, which are all widely separated from each other. T. kali seems to prefer rainforests or montane rainforests, and ranges from 400 to 1175 m elevation. Also, it seems to be relatively rare since the available material consists of less than 15 specimens. (Hita Garcia and Fisher 2012)


A member of the Tetramorium bonibony-species group

Tetramorium kali is easily recognisable within the group due to the following character combination: moderately long antennal scapes (SI 76 - 82); lack of well-developed anterior face or anterodorsal protuberance on pronotum; body of yellow to light brown colour. (Hita Garcia and Fisher 2012)

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: -12.53444° to -16.28322°.

Tropical South

Distribution based on Regional Taxon Lists

Malagasy Region: Madagascar (type locality).

Distribution based on AntMaps


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.

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.



Images from AntWeb

Tetramorium kali casent0235221 p 1 high.jpgTetramorium kali casent0235221 h 1 high.jpgTetramorium kali casent0235221 d 1 high.jpgTetramorium kali casent0235221 l 1 high.jpg
Holotype of Tetramorium kaliWorker. Specimen code casent0235221. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.


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

  • kali. Tetramorium kali Hita Garcia & Fisher, 2012: 36, figs. 31, 36, 48-50 (w.) MADAGASCAR.

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



HL 0.59 - 0.73 (0.67); HW 0.56 - 0.69 (0.63); SL 0.44 - 0.56 (0.50); EL 0.14 - 0.17 (0.15); PH 0.33 - 0.38 (0.35); PW 0.42 - 0.50 (0.46); WL 0.76 - 0.94 (0.85); PSL 0.22 - 0.30 (0.26); PTL 0.12 - 0.16 (0.14); PTH 0.23 - 0.30 (0.27); PTW 0.17 - 0.24 (0.21); PPL 0.19 - 0.23 (0.21); PPH 0.24 - 0.31 (0.27); PPW 0.22 - 0.29 (0.26); CI 92 - 95 (94); SI 76 - 82 (78); OI 23 - 24 (24); DMI 53 - 55 (54); LMI 40 - 43 (42); PSLI 37 - 41 (39); PeNI 41 - 48 (46); LPeI 50 - 57 (54); DPeI 136 - 160 (150); PpNI 53 - 57 (56); LPpI 72 - 80 (77); DPpI 119 - 131 (122); PPI 117 - 129 (122) (10 measured).

Head longer than wide (CI 92 - 95). Anterior clypeal margin with median impression. Frontal carinae weakly to moderately developed, fading out at or shortly after posterior eye margin. Antennal scrobes absent. Antennal scapes short, not reaching posterior head margin (SI 76 - 82). Eyes of moderate size (OI 23 - 24). Mesosomal outline in profile flat, anterior face of pronotum only weakly developed, mesosoma only weakly marginate from lateral to dorsal mesosoma; promesonotal suture absent, metanotal groove absent to weakly developed; mesosoma comparatively high, compact, and stout (LMI 40 - 435). Propodeal spines long, spinose, and acute (PSLI 37 - 41); propodeal lobes small and triangular. Petiolar node in profile cuneiform, weakly anteroposteriorly compressed dorsally, approximately 1.7 to 2.0 times higher than long (LPeI 50 - 57), anterior and posterior faces not parallel, anterodorsal margin situated higher than posterodorsal, dorsum moderately tapering backwards posteriorly; node in dorsal view between 1.3 to 1.6 times wider than long (DPeI 136 - 160). Postpetiole in profile approximately rounded, approximately 1.2 to 1.4 times higher than long (LPpI 72 - 80), in dorsal view approximately 1.2 to 1.3 times wider than long (DPpI 119 - 131). Postpetiole in profile approximately as voluminous as petiolar node, in dorsal view approximately 1.1 to 1.3 times wider than petiolar node (PPI 117 - 129). Mandibles striate; clypeus with few longitudinal, often irregular rugae or rugulae, median ruga sometimes developed; cephalic dorsum between frontal carinae anteriorly and centrally longitudinally rugose and posteriorly reticulate-rugose, dorsum with five to nine longitudinal rugae, rugae ending at posterior head margin but often broken or with cross-meshes, always with one well-developed longitudinal median ruga, median ruga running from posterior head margin to posterior clypeal margin, approximately at eye level diverging into two rugae leading to posterior clypeal margin; lateral and ventral head mainly reticulate-rugose to longitudinally rugose. Ground sculpture on head weakly to moderately reticulate-punctate. Mesosoma laterally mostly irregularly longitudinally rugose; dorsal mesosoma anteriorly strongly reticulate-rugose, posteriorly reticulate-rugose to longitudinally rugose. Waist segments and gaster unsculptured, smooth, and shiny. All dorsal surfaces of body with abundant, long, fine, and erect pilosity. Body of uniform yellow to light brown colour.

Type Material

Holotype worker, MADAGASCAR, Antsiranana, R.S. Manongarivo, 14.5 km 220° SW Antanambao, 13.99833 S, 48.42833 E, 1175 m, montane rainforest, sifted litter (leaf mold, rotten wood), collection code BLF1938, 20.X.1998 (B.L. Fisher) (California Academy of Sciences: CASENT0235221). Paratypes, six workers with same data as holotype (CASC: CASENT0198971; CASENT0198972; CASENT0198973; CASENT0247544; CASENT0247545; Musee d'Histoire Naturelle Genève: CASENT0247546); and three workers from Antsiranana, R.S. Manongarivo, 10.8 km 229° SW Antanambao, 13.96167 S, 48.43333 E, 400 m, rainforest, sifted litter (leaf mold, rotten wood), collection code BLF1996, 8.XI.1998 (B.L. Fisher) (The Natural History Museum: CASENT0227990; CASC: CASENT0198974; CASENT0198975).


The new species is named in honor of Kali Ressi for the support of Adeo and Cindy Ressi to discover and identify life on earth.


References based on Global Ant Biodiversity Informatics

  • Garcia H. F. and B. L. Fisher. 2012. The ant genus Tetramorium Mayr (Hymenoptera: Formicidae) in the Malagasy region—taxonomy of the T. bessonii, T. bonibony, T. dysalum, T. marginatum, T. tsingy, and T. weitzeckeri species groups. Zootaxa 3365: 1-123