THE WINGS OF EMBIIDINA 



265 



Enderlein states that in the subfamily Embiinas, vein R4 or R5 is forked 

 in some very rare cases; in Figure 262 a vestige of an accessory vein is 

 shown on vein R5 of the hind wing. 



While the media is usually reduced to an unbranched condition, in the 

 genus Donaconethis (Fig. 262) it is two-branched. 



Fig. 263. — Wing of Teratembia geniculata (From Enderlein 

 after Kraus). 



Vein Cui is reduced to a vestigial condition in many forms; this is the 

 case in the hind wing of Donaconethis (Fig. 262). 



The radial sector is reduced to a two-branched condition in Oligotoma 

 (Fig. 2 59) ; but is usually three-branched. In those forms where it is three- 

 branched, it is almost invariably veins R2 and R.3 that coalesce completely; 

 but in the genus Teratembia (Fig. 263) veins R2 and R3 are separate, while 

 veins R4 and R5 coalesce throughout their length. 



Fig. 264. — Wings of Clothoda nobolis (After Enderlein). 



In the genus Clothoda (Fig. 264), of which only a single species is known, 

 vein Cui bears two accessory veins in the fore wing and one in the hind 

 wing. 



In Teratembia (Fig. 263) and in some species of Embia there appears to 

 be a vestige of an accessorv vein borne by vein Cuo. 



