THYRIDIDAE OF AFRICA AND ITS ISLANDS 139 



Valve simple. Median basal process sclerotized. Juxta two lateral lobes, each with a few 

 inward projecting spines. Aedeagus with few small spines on manica. 



$. Wing, 9-1 1 mm. Colour and pattern as male. Labial palps long, 2.\ X diameter of 

 eye, upturned, third segment 1/4 length of second. 



Genitalia $ (PI. 63, fig. 392). Anal papillae short. Ostium simple, not sclerotized. Duct 

 covered with minute spines. Bursa without signum. 



Discussion. Some variation exists in intensity of colour, otherwise the pattern 

 and colour of this species are constant. The labial palps show strong sexual 

 dimorphism. The hind tibial spurs are very reduced, this occurs in both sexes 

 and is similar to B. tranquilla. The relationship of these two species is not clear. 

 The colour and pattern of B. galbana is unusual in the African Thyridid fauna and 

 lead me to speculate that this species lives in rather drier areas than the others. 

 From all other species B. galbana can be separated by the much reduced wing pattern 

 and sandy yellow colour. The leftside wing in PI. 1, A is the correct colour, the 

 rightside wing has lost most of its colour. 



Distribution. Map 51. Rhodesia; Angola; Botswana; South West Africa; 

 South Africa. 



Material examined. 



Holotype <$, South West Africa: Abachaus [160 ml. north of Windhoek], 

 xii.1943 (Hobohm), BM slide no. 10618, in TMP. 



Paratypes. Rhodesia: i <$, Sawmills (Janse), ii.1918, in TMP; 1 <J, Bulawayo, 

 3.iii.±924 (Stevenson); 2 $, Balla Balla, xii.1955, one $ in NMR; 2 $, Khami, Mata- 

 beleland, i.1962, in NMR; Angola: i <$, Mucungo, 950 ft, 11. x. 1930, Mossamedes 

 Distr. (Boulton), in CMP; Botswana: i $, 30 ml. NW. of Francis Town, 4.XL1967 

 (Pinhey), in NMR; 1 $, between Palapye and Mahalapye, 25. i. 1955 (Korke), in 

 TMP; South West Africa: i <$, Abachaus, i.1947 (Hobohm); South Africa: i $, 

 Shingwedzi, 29.iii.1952 (Vari & Janse), in TMP; 1 q\ Blouberg, N. side Glenferness, 

 Transvaal, 16-21.1.1955, in TMP; 1 o, Kransberg, ii.1932 (van Son), in TMP; 1 <J, 

 Wylies Poort, 5 m. north, 21-22. iii. 1964 (Janse), in TMP; 1 $, Zoutpan, Zpbg., 

 15-30. xi. 1932 (van Son); 1 <$, Blauwkop, 30. i. 1925 (Janse), in TMP. 



COLLINSA Whalley 



Collinsa Whalley, 1964a: 118. Type-species, Dohertya roseopuncta Warren, by original 



designation. 

 Dohertya Warren, 1902, preoccupied by Dohertya Hampson, 1894. 



This genus contains one African species. Examination of other species in the 

 Indo- Australasian region will almost certainly add more species to this genus and it is 

 possible that a South American species (Rhodoneura thiastoralis Walker), may be 

 placed in this genus. The genus is related to Bnpota Whalley where the proximal 

 pair of spurs are also reduced or modified but species of Bnpota show some fusion of 

 the radial veins of the fore wing and have very short labial palps. Species of 

 Collinsa occur in Africa, the Indo-Australasian region, and perhaps, America. The 

 genus is characterized by the reduction of one of the proximal spurs on the hind 

 tibia and the elongate, slightly clavate, shape of the remaining proximal spur. 



