THYRIDIDAE OF AFRICA AND ITS ISLANDS 173 



Sinecalca insolita sp. n. 



(PI. 22, fig. 117; PI. 46, fig. 262; PI. 67, fig. 434) 



o*. Wing, 10-12-5 mm. Vertex brown. Antennae ciliate. Frons not projecting between 

 eyes. Proboscis reduced. Labial palps with third segment 1/2 length of second segment. 

 Eyes large, almost touching ventrally below head. Thorax brown. No epiphysis on fore 

 tibia. Hind tibia with one pair of spurs, outer spur slightly shorter than inner spur. First 

 hind tarsal segment long, equal to length of hind tibia. Abdomen long, rather slender, narrow- 

 ing in first abdominal segment. Fore wing, pattern as in PI. 22, fig. 117, grey-brown with 

 darker transverse markings. Terminal margin slightly sinuate, apex pointed. Veins R 3 and 

 R t stalked. Underside similar to upperside, paler. Hind wings, colour and pattern as fore 

 wing but with median fascia darker. Underside similar. Sc+R t and Rs free. Frenulum 

 absent. Area in front of Sc+R t slightly enlarged. 



Genitalia $ (PI. 46, fig. 262). Uncus simple. Median basal process sclerotized, slightly 

 sinuate. Juxta, two small lateral lobes. Valve simple, broader at apex than middle. Aedeagus 

 with spiny vesica. 



$. Wing, i5-i7 # 5 mm. Colour and pattern as male. Labial palps and venation similar. 

 Frenulum absent No epiphysis on fore tibia. 



Genitalia $ (PI. 67, fig. 434). Anal papillae short. Ostium broad, covered with minute 

 spines. Duct of bursa and bursa covered with minute spines. 



Discussion. Although this species has typical Thyridid venation and genitalia 

 the lack of the epiphysis on the fore tibia makes it unique amongst the African 

 Thyrididae. The loss of the frenulum, which it share with S. confusa, is also peculiar 

 in the African fauna. The presence of only one pair of tibial spurs is another 

 unusual character but this does occur in a number of Thyridid genera (e. g. 

 Cecidothyris and some species of Chrysotypus) . 



The relationship of S. insolita to S. confusa is not clear, they share certain common 

 features, notably the loss of the frenulum, but insolita has a number of peculiar 

 characters not shared by confusa. It is possible that 5. confusa may need a separate 

 genus but this may be apparent when other faunae are studied. Until the world 

 fauna of the Thyrididae is examined more thoroughly, the importance of the loss of 

 the frenulum and epiphysis in the classification of the species cannot be estimated. 



Distribution. Map n. Tanzania. 



Material examined. 



Holotype^, Tanzania: Ugano, Matengo-Hochland, 1500-1700 m, WSW., Songea 

 (Zerny), i-io.ii.[io,]36, BM slide no. 10107, in NHV. 



Paratypes. Tanzania: i <$, 2 $, locality as type, 11-20. ii. 1936, one $, one $ in 

 NHV; 1 (J, locality as type, 21-29. ii. 1936; 1 <$, 3 $, locality as type, 11-20. iii. 1936, 

 one $, two $ in NHV; 1 $, locality as type, 1-10. iii. 1936, in NHV; 1 $, Ugano, 

 1500-1700 m, Matengo-Hochland, WSW. Songea, 26. iii. 1938 (Zimmer), in NHV. 



Sinecalca confusa sp. n. 



(PI. 22, fig. 118; PL 46, fig. 263; PI. 67, fig. 435) 



cJ. Wing, 15-16 mm. Vertex brown. Antennae monopectinate with short pectinations 

 covered with long cilia. Frons brown, not projecting between eyes. Labial palps with third 

 segment slightly less than 1/2 length of second, upturned, reaching just to vertex. Proboscis 



