38 P. E. S. WHALLEY 



Chrysotypus quadratus sp. n. 



(PI. 2, J; PL 26, fig. 136; PI. 48, figs 274, 275) 



o*. Wing, 23*5-27 mm. Vertex dark brown, scales on frons not projecting between 

 eyes, clypeus slightly swollen. Antennae strongly bipectinate. Proboscis vestigial. Labial 

 palps with third segment 1/3 length of second, upturned, not reaching vertex. Patagium very 

 dark brown, rest of thorax lighter brown. Underside of thorax light brown with long scales. 

 Hind tibia with two pairs of spurs, inner spur of distal pair slightly shorter than outer. Proximal 

 pair of spurs only slightly longer than scale cover of tibia. Fore wing, pattern as in PI. 2, J, 

 brown with dark brown costal margin and dark brown reticulations. Discal brown patch. 

 Terminal margin strongly convex. Veins R t and R 5 shortly stalked. Hind wing, colour and 

 pattern as fore wing, margin of wing darker brown. Veins Sc+R t and Rs free, cell closed. 



Genitalia ^ (PI. 26, fig. 136). Gnathus absent, gnathus arms weakly sclerotized. Lateral 

 arms of juxta strap-like, median arms with toothed edge. 



$. Wing, 35-5 mm. Pattern as in male. Colour generally paler than male. Labial palps 

 with third segment £ length of second. Antennae strongly bipectinate, pectinations nearly as 

 long as male. Proboscis present, short and slender. 



Genitalia $ (PI. 48, figs 274, 275). Sclerotized neck of duct narrower than dawsoni. No 

 signum. 



Discussion. The intensity of the brown colour varies. From C. dawsoni the male 

 of quadratus can usually be separated by the shorter antennal pectinations 

 (0*48 mm, quadratus; o*6o mm, dawsoni) but there is some overlap. The shape of 

 the juxta and the median process of the valve enable the males of the two species 

 to be separated reliably. The females can be separated on the length of the antennal 

 pectinations (0*3 mm, quadratus; 0-56 mm, dawsoni) and by the opening of the duct 

 which in quadratus is narrower than in dawsoni. The specimens from Angola are 

 constant in colour and pattern but the single specimen from Kitale, Kenya probably 

 represents a new subspecies. The wings of the Kenyan specimen are narrower and 

 it is darker than specimens from the type-locality. 



Distribution. Map 2. Democratic Republic of the Congo; Kenya; Tanzania ; 

 Angola. 



Material examined. 



Holotype $, Angola: Upper Lungwe, Bungo River {Barns), ix-x.1928, 4400 ft, 

 BM slide no. 10244, m BMNH. 



Paratypes. Angola: 4$, 1 $, data as type; 4 <$, Upper Cubango, Cunene Watershed 

 {Barns), x-xi.1928, 5500 ft. 



Material not included in the type-series. Democratic Republic of the Congo : 

 1 <J, Elisabethville {Seydel), xi.1950, in CMP; 1 <$, Lualaba, Lubudi {Clair), in MRAC; 

 Kenya: i <$, Kitale {Howard), v. 1953; Tanzania: i <$, Amani, x.1964 {Pringle). 



Chrysotypus tessellatus (Warren) comb. n. 

 (PI. 3, fig. 3; PI. 26, fig. 137; PI. 49, figs 279, 280) 



Proterozeuxis tessellata Warren, 1908 : 346. 



Proterozeuxis tessellata Warren; Dalle Torre, 1914 : 38. 



Proterozeuxis tessellata Warren; Gaede, 1917 : 372 (incorrectly attributed to Hampson). 



Proterozeuxis tessellata Warren; Gaede, 1929 : 497. 



