Tetramorium pogonion Bolton, 1980

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 : 38

Tetramorium pogonion Bolton, 1980

Figs 3K , 18 , 24

Tetramorium pogonion Bolton, 1980: 249 .

Diagnosis

Tetramorium pogonion is the only species in the T. solidum group with the head broader in front of the eyes than behind ( Fig. 3K ).

Material examined

Holotype

NAMIBIA: worker, 37 miles (60 km) W of Aus, 500 m a.s.l., 5 May 1958, E.S. Ross and R.E. Leech leg. ( CASC: CASTYPE13390 ).

Paratypes

NAMIBIA: 8 pinned specimens (5 workers, 1 ♂, 2 queens), same collection data as for holotype ( CASC: CASENT0270793 , CASENT0270794 ).

Measurements (worker N =4)

HL 0.924 –0.954 (0.944); HW 0.875 –0.895 (0.887); SL 0.688 –0.767 (0.718); EL 0.266 –0.285 (0.275); PH 0.452 –0.492 (0.470); PW 0.580 –0.610 (0.590); WL 0.964 –0.983 (0.971); PSL 0.118 –0.148 (0.135); PTH 0.275 –0.295 (0.289); PTL 0.275 –0.295 (0.288); PTW 0.275 –0.295 (0.285); PPH 0.305 –0.334 (0.325); PPL 0.256 –0.275 (0.270); PPW 0.344 –0.374 (0.356); OI 30–32 (31); CI 94–95 (94); SI 79–85 (81); DMI 59–63 (61); LMI 47–51 (48); PSLI 13–15 (14); PeNI 47–49 (48); LPeI 97–102 (100); DPeI 97–104 (99); PpNI 58–63 (60); LPpI 79–90 (83); DPpI 125–146 (132); PPI 120–131 (125).

Distribution

Only known from Namibia, where it was collected in the Namib Desert and Namib Savannah Woodlands.

Figures

Fig. 3. A–B. Waist segments and gaster oblique lateral view. A. T. setuliferum Emery, 1895 (MCZ_ ENT00512567). B. T. clunum Forel, 1913 (CASENT0764600). C–F. Waist segments in dorsal view. C. T. grandinode Santschi, 1913 (CASENT0764655). D. T. lerouxi Mbanyana, Robertson & Hita Garcia sp. nov. (SAM-HYM-C023329). E. T. signatum Emery, 1895 (SAM-HYM-C020573). F. T. glabratum Stitz, 1923 (SAM-HYM-C024395). G–I. Mesosoma in profile. G. T. jordani Santschi, 1937 (CASENT0248475). H. T. glabratum (SAM-HYM-C024395). I. T. rufescens Stitz, 1923 (CASENT0250852). J–M. Head in full-face view. J. T. barbigerum Bolton, 1980 (CASENT0901181). K. T. pogonion Bolton, 1980 (CASTYPE13390 – Antweb, photographer unknown). L. T. glabratum (SAM-HYM-C024395). M. T. rufescens (CASENT0250852). N–P. Waist segments in profile. N. T. duncani Mbanyana, Robertson & Hita Garcia sp. nov. (SAM-HYM-C027003). O. T. glabratum (SAM-HYM-C024395). P. T. rufescens (CASENT0250852).

Fig. 18. Tetramorium pogonion Bolton, 1980 (CASTYPE13390 – Antweb, photographer unknown). A. Body in profile. B. Body in dorsal view. C. Head in full-face view.

Fig. 24. Map showing the distribution of species in the Tetramorium solidum group.