Bembix triangulifera Arnold, 1944

Gess, Friedrich W. & Gess, Sarah K., 2014, Geographical distributions of Bembix (Hymenoptera, Crabronidae, Bembicinae) in southern Africa, with notes on biology, Journal of Hymenoptera Research 36, pp. 53-130 : 97-98

Bembix triangulifera Arnold Fig. 15a

Bembix stevensoni (non Parker) Arnold, 1929: 331, figs 3, 3a, 3b; Plate VI, fig. 48, ♂, (Holotype, ♂, Southern Rhodesia [Zimbabwe], Bulawayo, in SAMC ex NMBZ) (in revision of southern African Sphecidae ).

Bembix triangulifera Arnold, 1944: 23, ♀ (substitute name for Bembix stevensoni ); R. Bohart and Menke 1976: 549 (in checklist of world Sphecidae ); Pulawski 2013: 88 (in catalogue of world Sphecidae sensu lato).

Note.

The specific name, stevensoni, proposed by Arnold (December, 1929) is pre-occupied by stevensoni Parker (June, 1929) and in consequence Arnold (1944) proposed the substitute name triangulifera, at the same time describing the hitherto unknown female. However, both the holotype male and the allotype female are labelled in Arnold’s handwriting as angulifera, not triangulifera.

Material examined.

ZIMBABWE: W. Matetsi [18.15S, 25.55E], iv.1934 (R.H.R. Stevenson), 1 ♀; Sawmills [19.35S, 28.02E], 11.iii.1924 (R.H.R. Stevenson), 1 ♂; same locality and collector, 12.iii.1924, 1 ♂; Igusi [19.40S, 28.05E], 9.iii.1941 (Nat. Museum S. Rhodesia), 2 ♂♂; Umgusa Valley [20.02S, 28.34E], 16.ii.1941 (Nat. Museum S. Rhodesia), allotype ♀, 1 ♂; Bulawayo [20.07S, 28.32E], 7.i.1923 (Rhodesia Museum), holotype ♂ [all SAMC ex NMBZ]. SOUTH AFRICA: MPUMALANGA: Newington, Komatipoort [25.25S, 31.55E], 9.i.1912 (J.P. Fenouhlet), 1 ♀; NORTH WEST PROVINCE: Rustenburg [25.41S, 27.14E], 1.viii.1967 (H.N. Empey), 1 ♂. NORTHERN CAPE: Campbell [28.48S, 23.44E], 7.i.1916 (collector ?), 1 ♀ [all AMGS].

Geographical distribution.

Known only from Zimbabwe and northern South Africa ( Fig. 16a ).

Floral associations.

Unkown.

Nesting.

Unknown.

Prey.

Unknown

Figures

Figure 15. Bembix spp.: a Bembix triangulifera, female, male b Bembix ulula, female, male c Bembix venusta, female, male d Bembix zinni, female, male. (approximate lengths of females: a 14.5 mm; b 15.5 mm; c 22 mm; d 14 mm)

Figure 16. Distributions of collection records of Bembix spp.: a Bembix triangulifera b Bembix ulula c Bembix venusta d Bembix zinni.