A REVISION OF THE ETHIOPIAN DREPANIDAE (LEPIDOPTERA) 161 



Distribution. Known only from north-west Madagascar. 



Material examined. Type. Holotype £, Madagascar, Ankarafantsika, Am- 

 pijoroa, 170 m., i.1957 (Griveaud) ; Drepanidae genitalia slide No. 1387 ; in the 

 Museum national d'Histoire naturelle, Paris. 



Paratypes. Museum national d'Histoire naturelle, Paris. N.W. Madagascar : 

 1 $ and 2 (J, Ankarafantsika, Ampijoroa, 120 m., 30.viii, 4.ix.i956 {Griveaud). 



Nidara marcus sp. n. 



(Text-figs. 260-262 ; PL 18, figs. 345, 346) 



Description. <$. Palp yellow ; head yellow except for medial black patch short distance 

 anterior to antennae ; antennal shaft very dark brownish grey dorsally, buff laterally. 



Thorax yellow dorsally, very pale yellow ventrally. Front surface of fore tibia and tarsus 

 black, remainder of leg yellow ; front surface of mid tarsus and base of mid tibia black, rest of 

 leg yellow ; coloration of hind leg doubtful, probably similar to mid legs. Ground-colour of 

 upper surface of both wings yellow ; fore wing speckled with very dark greyish brown apically ; 

 diffusely marked antemedial fascia and postmedial fascia in holotype and one paratype (Plate 18, 

 fig. 346), absent in remaining paratype (Plate 18, fig. 345) ; white spot inside distal end of cell 

 absent on left wing of one paratype), second white spot close to cell between I\I 3 and Cn la , and 

 third white spot between Cz« la and Cu lb ; several very dark greyish brown striations between 

 costa and cell ; fringe yellow ; hind wing unmarked. Under surface of both wings slightly paler 

 yellow than upper surface ; apex of wing speckled with brown ; costal striations of upper 

 surface show through on fore wing. 



o* genitalia (Text-figs. 260-262) : uncus with four posterior teeth ; saccus narrow ; valve 

 long, tapered, with short setae along centre of inner surface ; diaphragma strongly dilated ; 

 aedeagus with distinctive lateral bulge, vesica scobinate at base ; posterior margin of eighth 

 sternum weakly emarginate medially, without processes. 



$. Not known. 



Measurements. A.P.R. : q\ 45. Wing : q*. 150, 14-0-15-5 mm. (3). 



Discussion. The colour-pattern, high antennal pectination ratio and distinctive 

 genitalia characterize this species. The species croceina and multiversa are similar 

 in size and colour to marcus but have readily distinguishable colour-patterns. 



This species is probably polymorphic. A diffusely marked antemedial fascia and 

 a postmedial fasciae are present in the holotype and one paratype but are absent in 

 the remaining paratype (see Plate 18, figs. 345, 346). 



Material examined. Type. Holotype $, Madagascar, Ambatolampy, Andra- 

 notobaka, 1,400 m., hi. 1957 (Griveaud) ; Drepanidae genitalia slide No. 1258 ; in 

 the Museum national d'Histoire naturelle, Paris. 



Paratypes. Museum national d'Histoire naturelle, Paris. Central Madagascar : 

 1 <$, Ambatolampy, Andranotobaka, 1,400 m., iv.1957 (Griveaud) ; 1 $, env. Tanan- 

 arive (Vieu). 



