. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 652 ANNALS OF THE SOUTH AFRICAN MUSEUM From certain forms o£ erythraeus it may at once be distinguished by the reddish hair in collar and on front part of pleurae, more extensive reddish on sides of abdomen, shorter third antennal joint, slightly narrower clear indentation on hind margin of wings and slightly, but distinctly, broader second band on hind margin. The aedeagal process of aedeagal apparatus (text-fig. 218, left) of o* differs from that of maurus in having the sides of the apical part sin
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 652 ANNALS OF THE SOUTH AFRICAN MUSEUM From certain forms o£ erythraeus it may at once be distinguished by the reddish hair in collar and on front part of pleurae, more extensive reddish on sides of abdomen, shorter third antennal joint, slightly narrower clear indentation on hind margin of wings and slightly, but distinctly, broader second band on hind margin. The aedeagal process of aedeagal apparatus (text-fig. 218, left) of o* differs from that of maurus in having the sides of the apical part Text-fig. 218. Left: Ventral view of aedeagal apparatus of 6* Litorrhynchus pseudocollaris Bezz. Right: Ventral and side views of aedeagal apparatus of 6* Litorrhynchus erythraeus subsp. allothyris Bezz. In the Transvaal and South African Museums and Commonwealth Institute. Length of body: about 13-16 mm. Length of wing: about 15-19 mm. Locality: Natal, Eastern and North-eastern Transvaal, Southern Rhodesia, Portuguese East Africa, Nyasaland and the Belgian Congo. As was stated under maurus there is some suspicion that either maurus or this species may be the tollini of Loew (p. 15, Wien. Ent. Monatschr., vii, 1863) which is also described as having reddish hair in collar and on anterior part of pleurae. This species, however, appears to be a North-east South African and tropical form whereas maurus is more widespread in South Africa and has a greater claim to be the tollini of Loew. Litorrhynchus erythraeus subsp. allothyris Bezz. (Bezzi, p. 329, Resultats Scientifiques (Ins. Dipt.), vi, Voyage de Ch. Alluaud et R. Jeannel en Afrique Orientale (1911-12), 1923; Bezzi, pp. 214, 224, 226 and 227, The Bombyliidae of the Ethiopian Region, I924-) The specimens in the collections before me which more or less agree with Bezzi's short notes and comments on the wing-pattern of the apparently wide- spread forms and varieties of erythraeus, a species which he originally described.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
