A taxonomic revision of seed harvester ants of the Tetramorium solidum group (Hymenoptera: Formicidae) in southern Africa Mbanyana, Nokuthula Garcia, Francisco Hita Robertson, Hamish Gibson Roux, Johannes Jacobus Le European Journal of Taxonomy 2018 2018-08-07 454 1 59 CMVCJ Mbanyana, Robertson & Hita Garcia Mbanyana, Robertson & Hita Garcia 2018 [392,1097,510,537] Insecta Formicidae Tetramorium Animalia Hymenoptera 20 21 Arthropoda species duncani sp. nov.   urn:lsid:zoobank.org:act: 6F687F00-D1C3-4DB9-8B3D-A588A1ED5A8F  Figs 3N, 10, 24    Diagnosis Morphologically,  T. duncani sp. nov.is similar to  T. pogonion,  T. rufescensand  T. signatum, but can be distinguished from these species by the acute angle between the dorsum of the petiole and the posterior face when viewed laterally ( Fig. 3N).    Etymology Named after Duncan Robertson, who assisted with field work, including photography of ants.    Material examined    Holotype  NAMIBIA: worker, Withuis,  11 kmN of Grunauon B1, 27°36.447′ S, 18°23.920′ E,  1243 ma.s.l.,  3 Apr. 2011, N. Mbanyanaand H.G. Robertsonleg. (SAM-HYM-C027003).    Paratypes(9 pinned workers)   NAMIBIA: Withuis,  11 kmN of Grunau on B1, 27°36.447′ Sand 18°23.920′ E,  1243 ma.s.l.,  3 Apr. 2011, N. Mbanyanaand H.G. Robertsonleg. ( SAM-HYM-C027003);  Withuis,  11 kmN of Grunau on B1, 27°36.504′ Sand 18°23.823′ E,  1241 ma.s.l.,  2 Apr. 2011, N. Mbanyanaand H.G. Robertsonleg. ( SAM-HYM-C027004);  Withuis,  11 kmN of Grunauon B1, 27°36.447′ Sand 18°23.920′ E,  1243 ma.s.l.,  3 Apr. 2011, N. Mbanyanaand H.G. Robertsonleg. (SAM-HYM-C027010);  Kyffhauser, 24°28.708′ Sand 16°20.148′ E,  1381 ma.s.l.,  6 Apr. 2011, N. Mbanyanaand H.G. Robertsonleg. (SAM-HYM-C027013); ca  132 kmfrom Marientalon M29, 25°16.795′ S, 18°37.635′ E,  18 Apr. 2011, N. Mbanyanaand H.G. Robertsonleg. (SAM-HYM-C027001).  Other material   SOUTH AFRICA(2 pinned specimens):  Northern Cape: Breekkieriedunes, 30°07′ S, 21°33′ E,  4 May 1985, M.A. Macphersonleg. (SAM-HYM-C001771);  Kortkop farm near Strydenburg, 30°09′ S, 23°44′ E,  17 Jun. 1995, B. Chambersleg. (SAM-HYM-C008763).   Measurements(worker N =5) HL 1.033 –1.266(1.132); HW 1.033 –1.266(1.116); SL 0.723 –0.865(0.798); EL 0.297 –0.362(0.320); PH 0.374 –0.482(0.452); PW 0.672 –0.840(0.716); WL 1.072 –1.382(1.168); PSL 0.148 –0.187(0.163); PTH 0.325 –0.433(0.358); PTL 0.297 –0.336(0.318); PTW 0.323 –0.413(0.364); PPH 0.465 –0.607(0.519); PPL 0.284 –0.336(0.310); PPW 0.413 –0.555(0.475); OI 27–31 (29); CI 97–100 (99); SI 68–75 (71); DMI 59–63 (61); LMI 35–44 (39); PSLI 12–17 (15); PeNI 48–54 (51); LPeI 78–96 (89); DPeI 104–123 (115); PpNI 62–69 (66); LPpI 54–68 (60); DPpI 139–168 (153); PPI 128–134 (130).   Description   Holotype(worker) Mandibles with fine longitudinal striations. Anterior clypeal margin with conspicuous, semicircular indentation. Frontal carinae fading out before reaching back of posterior eye margin. Eyes with 16 ommatidia in longest row. Propodeum armed with pair of long spines (PSLI 12–17). Metapleural lobes low, rounded. Peduncle lacking subpetiolar process. Petiolar node in profile nodiform, with anterior face rounding onto dorsum and dorsum forming acute angle with posterior face. Postpetiolar node low and rounded. Dorsal surfaces of head with longitudinal striations, spaces between them with superficial ground sculpture. Dorsum of mesosoma with short longitudinal striations, with shiny superficial ground sculpture in between them. Petiolar and postpetiolar nodes with fine reticulate sculpture overlain by few irregular striations. Gastral tergite with fine, superficial reticulate pattern. Dorsum of head with four long erect pairs of hairs. Ventral surface of head with strongly developed psammophore. Remaining dorsum of the body without any standing hairs. Colour blackish brown.    Distribution Known from Namibiaand South Africa( Northern Cape), where these specimens were collected from Namibian Savanna Woodlands and Kalahari Xeric Savanna. Specimens collected by hand (including in nets) and from pitfall traps. 2611461304 2011-04-03 N. Mbanyana & H. G. Robertson Namibia 1243 -27.60745 Withuis 1 18.398666 20 21 1 1 holotype 4466527321 [234,590,1093,1120] 2011-04-03 N. Mbanyana & H. G. Robertson Namibia 1243 -27.60745 Withuis 1 18.398666 Withuis 20 21 SAM-HYM-C027003 1 1 paratype 3899602570 2011-04-02 N. Mbanyana & H. G. Robertson 1241 -27.6084 Withuis 1 18.39705 Withuis 20 21 SAM-HYM-C027004 1 3899602317 2011-04-03 N. Mbanyana & H. G. Robertson 1243 -27.60745 Grunau 1 18.398666 Withuis 20 21 1 3899602305 2011-04-06 2011-04-18 2011-04-06 N. Mbanyana & H. G. Robertson 1381 -25.279917 Mariental 1 18.62725 Kyffhauser 20 21 1 3899602364 2011-04-06 2011-04-18 2011-04-06 N. Mbanyana & H. G. Robertson 1381 -25.279917 Mariental 1 18.62725 Kyffhauser 20 21 1 3899602365 1985-05-04 M. A. Macpherson South Africa -30.116667 Breekkierie 1223 21.55 20 21 1 Northern Cape 3899602606 1995-06-17 B. Chambers -30.15 Kortkop farm near Strydenburg 1223 23.733334 20 21 1