Tetramorium clunum Forel, 1913

Mbanyana, Nokuthula, Garcia, Francisco Hita, Robertson, Hamish Gibson & Roux, Johannes Jacobus Le, 2018, A taxonomic revision of seed harvester ants of the Tetramorium solidum group (Hymenoptera: Formicidae) in southern Africa, European Journal of Taxonomy 454, pp. 1-59 : 17

publication ID

https://doi.org/10.5852/ejt.2018.454

publication LSID

lsid:zoobank.org:pub:07F6B28D-ECA4-4F14-8132-0A58DE156057

DOI

https://doi.org/10.5281/zenodo.3818710

persistent identifier

https://treatment.plazi.org/id/039887DC-FF80-A464-2B7C-A716FAABA3D0

treatment provided by

Valdenar

scientific name

Tetramorium clunum Forel, 1913
status

 

Tetramorium clunum Forel, 1913

Figs 2D View Fig , 3B View Fig , 8 View Fig , 24 View Fig

Tetramorium setuliferum st. cluna Forel, 1913: 218 View Cited Treatment .

Diagnosis

In the T. solidum group there are only three species with short, broad, flattened and strongly appressed glittering silvery hairs covering the body ( Fig. 2 View Fig D–F), namely, T. s etuliferum, T. clunum and T. galoasanum . Tetramorium galoasanum is distinguished from the other two species by its long, dense, overlapping strap-like hairs, whereas in the other two species these hairs are sparse and spaced out. Tetramorium clunum is separated from T. setuliferum by the following characters: (1) first gastral tergite does not overhang the tergosternal suture in profile ( Fig. 3B View Fig ); (2) first gastral tergite is sculptured throughout whereas in T. setuliferum only the base is sculptured; (3) dorsum of head behind clypeus with at least one pair of erect hairs, whereas T. setuliferum lacks elongate erect hairs on the dorsum of head; and (4) tergum of postpetiole without lateral alar prominences, whereas these are present in T. setuliferum .

Material examined

Syntypes

SOUTH AFRICA: workers, Eastern Cape, Willowmore , Dec. 1912, H. Brauns leg. ( BMNH: CASENT0901182 ; MHNG: CASENT0909155 ).

Other material

SOUTH AFRICA (26 pinned specimens): Eastern Cape: Fish River Valley, Jun. 1965 ( SAM- HYM-C004009); Willomore , Sep. 1919, H. Brauns leg. (SAM-HYM-C004010); Willowmore, 33° S, 22° E, 500 m a.s.l., nest in sandy soil, 1 Dec. 1976, C.F. Jacot-Guillarmod leg. ( CASC: CASENT0217964 ; BMNH: CASENT0764600 to CASENT0764602 ). GoogleMaps – Western Cape: Oudtshoorn, Grootkop Nature Reserve , 33.577917° S, 22.217028° E, 373 m a.s.l., 10 Mar. 2006, Succulent Karoo , pitfall trap, B. Braschler leg. (SAM-HYM-C024965); GoogleMaps Josephskraal, 33.04182° S, 20.72157° E, 896 m a.s.l., Koedoesberge-Moordenaars Karoo , deep soil on elevated flood plain, 16 Apr. 2008, N. Mbanyana and H.G. Robertson leg. (SAM-HYM-C020467); GoogleMaps Nature’s Valley , 33°58′38″ S, 23°33′39″ E, 10 m a.s.l., 8 Dec. 1967, A.J. Prins leg. (SAM-HYM-C015136). GoogleMaps – Northern Cape: Melton Wold , 31.46189° S, 22.72417° E, 1331 m a.s.l., 9 Jan. 2009, N. Mbanyana and H.G. Robertson leg. (SAM-HYM-C023304). GoogleMaps

Measurements (worker N =11)

HL 0.885 –1.062 (0.958); HW 0.919 –1.090 (0.991); SL 0.688 –0.757 (0.723); EL 0.207 –0.266 (0.239); PH 0.482 –0.570 (0.544); PW 0.570 –0.669 (0.609); WL 0.922 –1.023 (0.963); PSL 0.157 –0.177 (0.168); PTH 0.285 –0.344 (0.307); PTL 0.295 –0.340 (0.315); PTW 0.305 –0.381 (0.325); PPH 0.413 –0.530 (0.461); PPL 0.187 –0.246 (0.207); PPW 0.374 –0.472 (0.401); OI 22–27 (24); CI 101–105 (103); SI 69–76 (73); DMI 61–67 (63); LMI 51–62 (57); PSLI 15–19 (18); PeNI 49–57 (53); LPeI 97–113 (103) DPeI 92–112 (103); PpNI 63–71 (66); LPpI 40–58 (45); DPpI 152–218 (195); PPI 117–127 (124).

Distribution

Tetramorium clunum has been recorded from South Africa (Eastern Cape, Western Cape and Northern Cape) and Namibia, where it occurs in Nama Karoo, Succulent Karoo and Namib Desert.

This is a ground-nesting species. It has been recorded nesting in deep soils. Nothing is known about its feeding behaviour, but presumably this species feeds on seeds, as this is recorded for most other species of this group. This species has been collected in yellow pan traps, pitfall traps and by turning stones.

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]

MHNG

Switzerland, Geneva, Museum d'Histoire Naturelle

CASC

USA, California, San Francisco, California Academy of Sciences

MHNG

Museum d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Tetramorium

Loc

Tetramorium clunum Forel, 1913

Mbanyana, Nokuthula, Garcia, Francisco Hita, Robertson, Hamish Gibson & Roux, Johannes Jacobus Le 2018
2018
Loc

Tetramorium setuliferum st. cluna

Forel A. 1913: 218
1913