Horatosphaga scalata Hemp, 2019

Material examined. Zambia: Redcliff Zambezi Lodge, Luangwa, Lepiled Light Trap 11-17.III.2019, V. Dérozier, M. Imakando, W. Miles, L. Mulvaney (2♂) ; Zambia: Redcliff Zambezi Lodge, Luangwa, Actinic Light Trap 11-17. III.2019, V. Dérozier, M. Imakando, W. Miles, L. Mulvaney (2♂, 1♀) ; Zambia: Bruce-Miller Farm, Choma, Lepiled Light Trap 28.II-8.III.2019, V. Dérozier, M. Imakando, W. Miles, L. Mulvaney (1♂) ; Zambia: Bruce-Miller Farm, Choma, Actinic Light Trap 28.II-8.III.2019, V. Dérozier, M. Imakando, W. Miles, L. Mulvaney (9♂) ; Zambia: Gwabi River Lodge, Chirundu, Actinic Light Trap 8-11.III.2019, V. Dérozier, M. Imakando, W. Miles, L. Mulvaney (1♂) ; Zambia: Gwabi River Lodge, Chirundu, MV Light Trap 8-11.III.2019, V. Dérozier, M. Imakando, W. Miles, L. Mulvaney (1♂) ; Zambia: Lakeview Lodge, Sinazongwe (493m), MV Light Trap 23-28.II.2019, V. Dérozier, M. Imakando, W. Miles, L. Mulvaney (1♂) (ANHRT).

Remarks. Characters of the above listed specimens match quite well with those of H. scalata (cf. Figs 8a, 8c, 8d, 8e and compare them with figures in Hemp & Heller 2019), known only from central Tanzania (Hemp 2021). H. scalata belongs to a group of species with an unmodified tenth abdominal tergite, hind wings longer than forewings, and tympanic auricles inflated in the male; interestingly, H. hemporum Massa, 2021 from Zambia belongs to the same group too (Massa 2021a).

Description of the female. Similar in size and colour as male (cf. Hemp in Hemp & Heller 2019), tympanic auricles of fore tibiae conchate, not inflated, tegmina shorter and wider, and hind wings stronger reduced than in male, ca. 4.0 mm long (Fig. 8b). Subgenital plate with triangular apex. Ovipositor stout, slightly up-curved and strongly serrated (Fig. 8f). Cerci thick and short.

Measurements of the female (in mm). Body length: 23.6; length of pronotum: 6.3; height of pronotum: 3.7; length of hind femora: 29.9; length of tegmina: 29.8; width of tegmina: 9.8; length of ovipositor: 13.8.