74 H. STEMPFFER 



Whig shape peculiar ; in the <J the apex of the fore wing is almost rectangular, outer margin 

 straight from the apex to the end of vein 4, concave between veins 4 and 2, inner angle much 

 rounded ; in the $ the apex is rounded instead of angular ; in both sexes the hind wing is 

 almost quadrangular with a very concave fore margin. 



Wing venation (Text-fig. 256). Fore wing with veins 2 and 3 arising from the lower edge of 

 the cell and strongly curved towards the inner margin. Hind wing : vein 8 is very long, runs 

 parallel to the costa and arises from the upper edge of the cell, not from the base of the wing, 

 as indicated in error by Bethune Baker (1924 : 205). 



Male genitalia (Text-fig. 73). Uncus crescentic, with a shallow notch in the posterior edge ; 

 no subunci ; tegumen subtriangular ; vinculum fairly wide ; a small lower fultura sheathing 

 the base of the penis ; valves oblong, the two processes separated at the apex, the upper 

 process with blunt apex, the lower lobed ; penis elongate, slightly curved, the external portion 

 tapering uniformly to the obliquely cut apex ; uncus and apices of valves densely pilose. 



The life-history of T. isabellae has been well described by Farquharson (see 

 Eltringham, 1921, Trans, ent. Soc. Lond. 1921 : 342 and 476, pi. 12, figs 7 to 9, 14 

 and 15). I give below a brief resume of the paper. The caterpillar has the appear- 

 ance of that of a species of Lymantriidae ; all segments bear dorsal and lateral 

 tubercles, and each tubercle is adorned with a tuft of long, fine, branched hairs ; 

 on segments 5 to 8 there are urticating spicules. The chrysalis, in the thoracic and 

 dorsal regions, is covered with " chitinanths ", which give it a mouldy appearance. 

 The imago sucks up the secretion of certain Coccidae, after driving away the ants 

 for which this secretion is the usual food. 



The systematic position of Teratoneura is doubtful. Bethune Baker included it 

 in the Liphyrinae, having erroneously endowed it with a segmented male fore 

 tarsus, whereas, as I have said above, the male fore tarsus has the usual Lycaenid 

 structure. The lymantriid aspect of the caterpillar and its mode of life indicate 

 relationship with Epitola, Hewitsonia, etc. 



List of Species of Teratoneura 



* Teratoneura isabellae isabellae Dudgeon, 1909. 



^Teratoneura isabellae congoensis Stempffer, 1953, Annls Mus. R. Congo beige 

 46 : 16. 



Genus IRIDANA Aurivillius 



Iridana Aurivillius, 1920 : 345. Type-species : Iris incredibilis Staudinger, by monotypy. 

 Iris Staudinger, 1891, Dt. ent. Z. Iris 4 : 141 (invalid homonym). 

 Iridopsis Aurivillius, 1898 : 286 (invalid homonym). 



Eyes large, naked ; palpi slightly turned upwards, protruding far beyond the frons, second 

 segment long, thick, clothed below with short hairs, third segment one-third to one-quarter the 

 length of the second, smooth, acuminate ; antennae slender, two-thirds the length of the costa, 

 club short ; thorax long, very pilose ; fore leg slender, smooth, tibia slightly longer than the 

 femur, £ tarsus unsegmented, about two-thirds the length of the tibia. 



Wing venation (Text-fig. 257). Fore wing, vein 2 strongly recurved towards the inner 

 margin ; vein 3 also recurved but not so strongly ; vein 7 is doubly curved and ends at the 

 apex ; vein 9 missing. 



