Tetramorium rufescens Stitz, 1923

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 : 42-44

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.3818722

persistent identifier

https://treatment.plazi.org/id/039887DC-FFB9-A45F-2B67-A716FB08A086

treatment provided by

Valdenar

scientific name

Tetramorium rufescens Stitz, 1923
status

 

Tetramorium rufescens Stitz, 1923

Figs 2H View Fig , 3I, M, P View Fig , 20 View Fig , 24 View Fig

Tetramorium solidum st. rufescens Stitz, 1923: 163 .

Diagnosis

The following character combination distinguishes T. rufescens from T. glabratum and T. signatum : dorsum of mesosoma with dense reticulate punctate sculpture and propodeal spines long and narrow (PSLI 16–23).

Material examined

Syntypes

NAMIBIA: 3 pinned workers, Swakopmund , 12–19Apr. 1911, W. Michaelsen leg. ( ZMHB: FOCOL 2082 to FOCOL 2084 ).

Other material

NAMIBIA (148 pinned specimens): Spitzkoppe , 21°50′ S, 15°11′ E, 6–7 Mar. 1995, pitfall traps, E.S. Ross and A.R. Stephen leg. ( CASC: CASENT-0217976 (compared with type)); GoogleMaps 61.2 km S of Gobabis on C20, at intersection of C20 and D1790, 22°56.806′ S, 18°44.681′ E, 1353 m a.s.l., nesting in red sandy soil, 17 Apr. 2011, N. Mbanyana and H.G. Robertson leg. (SAM-HYM-C027008); GoogleMaps Porcupine Camp Site, 2.8 km W of Kamanjab , 19°38.448′ S, 14°45.980′ E, 10 Apr. 2011, nesting in loam soil, entrance in the open, N. Mbanyana and H.G. Robertson leg. (SAM-HYM-C026891); GoogleMaps Spitzkopje, 50 mi. E of Hentiesbaai , 950 m a.s.l., 13 Oct. 1967, pitfall traps, H.G. Robertson leg. (SAM-HYM-C007990); Spitzkoppe, 21°50′ S, 15°11′ E, 6–7 Mar. 1995, pitfall traps, H.G. Robertson leg. (SAM-HYM-C007993); GoogleMaps Otjozondju, Otjiamongo , 21.60° S, 16.94° E, 1495 m a.s.l., 8 May 2007, C. Grohmann leg. ( SAM- HYM-C027188); GoogleMaps Ongongo (= Warmquelle ), 19°10′ S, 13°49′ E, foraging on rocky ground, 10 Mar. 1995, H.G. Robertson leg. (SAM-HYM-C008141); GoogleMaps Epupa Falls , 17°00′ S, 13°15′ E, open rocky savanna, H.G. Robertson leg. (SAM-HYM-C009147, SAM-HYM-C009089); GoogleMaps Spitzkoppe , 21°50′ S, 15°11′ E, 6–7 Mar. 1995, pitfall traps, H.G. Robertson leg. (SAM-HYM-C007998); GoogleMaps Gamsberg Pass , 23.16° S, 16.20° E, 7 Sep. 1987, H.G. Robertson leg. (SAM-HYM-C000496); GoogleMaps Naukluft PK, Mirabib , 12 Mar. 1988, collected from nest, H.G. Robertson leg. (SAM-HYM-C001039); Namib Nuakluft Park, Ganab Camp Site , 13 Mar. 1986, collected from nest, H.G. Robertson leg. (SAM-HYM-C001044); SE of Windhoek, M’Bela Farm , on sand, C. Dickman leg. (SAM-HYM-C006260, SAM-HYM-C006263, SAM-HYM-C006265); Hobatere , 15 Mar. 1995, open mopane savanna on granite derived gravelly soils, H.G. Robertson leg. (SAM-HYM-C009193); Hobatere (3 km from gate), Boomrivier , Luderitz District , 28°01′ S, 17°04′ E, 13–26 Nov. 1992, pitfall traps, E. Marais leg. (SAM-HYM-C027181); GoogleMaps Daberas, Diamond Area 1, 28°12′ S, 16°49′ E, pitfall trap, 14–29 Sep. 1994, E. Marais leg. (SAM-HYM-C027184); GoogleMaps miscellaneous foragers, Opuwo, 3 km from Opuwo Junction on C35, open savanna on red clay soils, pointed termite mounds, 14 Mar. 1995, H.G. Robertson leg. (SAM-HYM-C009186); Klein-Aus Vista , rocky north-facing slope with low shrubs and grass, 26°39.221′ S, 16°14.532′ E, 1325 m a.s.l., soils shallow and gravelly, 5 Apr. 2011 (SAM-HYM-C027006); GoogleMaps foragers, Ai-Ais , 27°55′ S, 17°30′ E, 19 Mar. 1995, on gravel/bare ground outside bungalow, H.G. Robertson leg. (SAM-HYM-C009267); GoogleMaps Namib Desert, Skeleton Coast , 10 Aug. 1982, collected from a gravel plain, desert, A.C. Marsh leg. ( CASC: CASENT0764595 , CASENT0764596 ); Karibib, Erongo,Central Namib Desert 2010site33, 22.13598°S, 14.86326° E, 596 m a.s.l., hand collected, desert, Central Namib vegetation, 28 Oct. 2010, P. Hawkes, J. Fisher, J. Irish and R. Scholtz leg. ( CASC: CASENT0250971 ). GoogleMaps

SOUTH AFRICA: Northern Cape: road from Klein Pella to Orange River, 28.98596° S, 18.99436° E, 615 m a.s.l., 15 Dec. 2007, Eastern Gariep plain desert with deep soils and Euphorbia , found nesting at base of grass tuft, N. Mbanyana and H.G. Robertson leg. (SAM-HYM-C019958); GoogleMaps Hopetown Municipal Farm, Hopetown District , 4 km E of Hopetown , 15 Feb. 1997, B. Chambers leg. (SAM-HYM-C011115); Brandvlei , 23 Nov. 1963 (SAM-HYM-C017177); Postmasburg, Oryx Game Farm site 5, pitfall trap, 28.44786° S, 22.13321° E, 1107 m a.s.l., mixed savannah in Gordonia Duneveld , 26 Mar. 2011, D. Pietersen leg. ( CASC: CASENT0250875 ); GoogleMaps Postmasburg, SIO-site 4, 27.80767° S, 22.94291° E, 1170 m a.s.l., pitfall trap, ephemeral river bed and adjacent vegetation in Olifantshoek Plains Thornveld , 19 Feb. 2015, P. Hawkes and J. Fisher leg. ( CASC: CASENT0250852 ). GoogleMaps – Eastern Cape: Grahamstown , 19 Nov. 1965, A.J. Prins leg. (SAM-HYM-C019173) .

Measurements (worker N =13)

HL 0.983 –1.200 (1.065); HW 0.954 –1.151 (1.021); SL 0.708 –0.856 (0.772); EL 0.266 –0.325 (0.291); PH 0.393 –0.570 (0.460); PW 0.610 –0.777 (0.678); WL 1.003 –1.141 (1.101); PSL 0.167 –0.236 (0.206); PTH 0.315 –0.403 (0.348); PTL 0.275 –0.325 (0.305); PTW 0.295 –0.425 (0.343); PPH 0.315 –0.418 (0.362); PPL 0.226 –0.291 (0.259); PPW 0.369 –0.521 (0.433); OI 27–30 (29); CI 91–100 (96); SI 73–81 (76); DMI 57–69 (62); LMI 36–50 (42); PSLI 16–23 (19); PeNI 46–61 (50); LPeI 78–100 (88) DPeI 97–127 (112); PpNI 59–75 (64); LPpI 59–77 (72); DPpI 154–188 (167); PPI 121–133 (127).

Distribution

Tetramorium rufescens is known from South Africa and Namibia.

Remarks

The description of this species matches that of Bolton (1980), except for colour. We observed some variation in the specimens examined, ranging from red to light brown, in those collected at certain localities in South Africa (Klein Pella) and Namibia (Kamanjab, Luderitz District, Daberas, Hobatere, Epupa Falls). This species has been recorded from the Drakensberg Montane Grasslands, Kalahari Xeric Savanna, Nama Karoo, Namib Desert, Namibian Savanna Woodlands and Succulent Karoo.

ZMHB

Germany, Berlin, Museum fuer Naturkunde der Humboldt-Universitaet

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Tetramorium

Loc

Tetramorium rufescens Stitz, 1923

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

Tetramorium solidum st. rufescens

Stitz H. 1923: 163
1923