thyrididae of africa and its islands 79 



Material examined. 



Holotype <3\ Ivory Coast: ForSt du Banco, x.1963 (Piart & Griveaud), BM slide 

 no. 10630, in MNHN. 



Material not included in type-series: Sierra Leone: i $, Bambawa (Revell), 

 13.vi.1969. 



Striglina ratnosa sp. n. 



(PL 7, fig. 28; PL 32, fig. 176; PL 54, figs 313, 314) 



o*. Wing, 9-5-11 mm. Vertex brown. Antennae strongly ciliate. Frons rounded, not 

 projecting between eyes, paler than vertex. Labial palps upturned, reaching above vertex, 

 third segment very small, less than 1/5 length of second. Eyes without inter facetal hairs. 

 Thorax dark brown. Hind tibia with large scale tuft, proximal pair of spurs long, reaching 

 nearly to apex of shortest distal spur. Outer spur of distal pair 2/3 length of inner spur. Hind 

 tarsi each with row of spines along length. Fore wing, pattern as in PI. 7, fig. 28, dark yellowish 

 brown with dark brown fascia from the apex of fore wing to median part of hind margin. 

 Frequently with brown spots over apex of cell (this may be obscured when fascia is dark brown) . 

 Underside more yellowish brown, otherwise similar to upperside. Veins i? a and R 3 very close 

 together, separated more widely from R t and i? B , which are also close together. Vein iA 

 approaches hind margin near base of wing but curves inward slightly towards termen. Hind 

 wing, similarly coloured to fore wing, Sc+R 1 and Rs approach closely but do not join. 



Genitalia £ (PI. 32, fig. 176). Uncus double. Gnathus a sclerotized loop with two pairs of 

 processes on each side of mid point. Subscaphium sclerotized with hairy median plate. Valve 

 reduced to narrow strip. Basal process a small hairy papilla. Lateral lobes of juxta elongate 

 and hairy and shaped rather like an antler of a deer. Sacculus enlarged as flat lobe. Saccus 

 reduced. Aedeagus with lateral thorn-like process and with a minute tooth near base of process. 

 Apex of aedeagus sclerotized and slightly upturned. Vesica strongly spined. Abdomen with 

 VHIth sternite deeply incised on posterior margin. 



$. Wing, 1 1 -5 mm. Third segment of labial palp longer than in male, 1/3 length of second 

 segment. Colour and pattern as male. 



Genitalia $ (PI. 54, figs 313, 314). Anal papillae short. Strong development of sclerotized 

 plate over ostium. First part of duct broad, minutely spined, narrowing to rest of duct. Bursa 

 with two broad transverse sclerotized plates covered in spines forming signum. 



Discussion. There is some variation in intensity of colour of specimens examined. 

 The labial palps show strong sexual dimorphism. Both sexes have a large scale- 

 crest on the hind tibiae. The male genitalia are very similar in general plan to 5. 

 clathrata but lack the strongly toothed gnathus of that species. Externally S. 

 ramosa is very similar to S. vindicta and, except for the differences in the genitalia, is 

 similar in general morphology. There is some variation in the shape of the process in 

 the aedeagus and in other parts of the male genitalia between specimens from Gabon 

 and Cameroon which may be subspecific but with few specimens available these are 

 not yet separated. 



Distribution. Map 34. Cameroon; Gabon. 



Material examined. 



Holotype <J, Gabon: Kangwe, Ogove River (Good), BM slide no. 10627, m CMP. 



Paratypes. Gabon : 4 $, 1 $, data as type, 2 <$, in CMP ; Cameroon : 1 £, Efulen 

 (Weber), 17.iv.1922, in CMP; 1 <$, Efulen (Weber), 10.iv.1921, in CMP; 1 $, Efulen 

 (Weber), 22.X.1913. 



