. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 646 ANNALS OF THE SOUTH AFRICAN MUSEUM. Text-fig. 214. Side view of hypopygium and ventral view of the aedeagal apparatus of 6* Litorrhynchus rostratus (Lw.). third posterior cell about 1 J, or a little more, times as broad as that of second; halteres brown, apices of knobs yellowish above. Head with antennal joint 3 conical, its style from ij to 1 \ times as long as joint; proboscis dark, about 4-6-5-6 mm. long. Hypo- pygium of $ (text-fig. 214) with the crest of hairs on dorsal aspect of basal part
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 646 ANNALS OF THE SOUTH AFRICAN MUSEUM. Text-fig. 214. Side view of hypopygium and ventral view of the aedeagal apparatus of 6* Litorrhynchus rostratus (Lw.). third posterior cell about 1 J, or a little more, times as broad as that of second; halteres brown, apices of knobs yellowish above. Head with antennal joint 3 conical, its style from ij to 1 \ times as long as joint; proboscis dark, about 4-6-5-6 mm. long. Hypo- pygium of $ (text-fig. 214) with the crest of hairs on dorsal aspect of basal parts rather more spine-like and stouter than in all the pre- ceding species. In the Transvaal and South African Museums. Length of body: about 10J-16 mm. Length of wing: about 13-17J mm. Locality: On mountains in Western Cape to Algoa Bay. Litorrhynchus dilatatus Bezz. (Bezzi, p. 634, Trans. Ent. Soc. Lond., 1911 (1912); Bezzi, p. 475, Ann. S. Afr. Mus., xviii, 1921; Bezzi, p. 225, The Bombyliidae of the Ethiopian Region, 1924.) The identity of the South African representatives of this species is based on a ^-specimen from South-West Africa which Bezzi labelled as dilatatus and which more or less agrees with Bezzi's description of the species (loc. cit., 1911 (1912)). Judging from the fairly long series of South African specimens in the collections before me and also from Bezzi's description and comments it is, however, evident that this species is variable to a certain extent in the length of the third antennal joint, the extent of the clear indentation in the wings, the extent of the second band and the extent of the yellowish hairs on the pleurae anteriorly. It is very near rostratus as defined above and may almost be considered as a variable form of it. It differs, however, in having the sides of face and basal half of frons or even greater part of head in front more constantly and more obviously darkened to a variable extent; in having a distinctly longer and characteristic t
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
