14 EPHEMERID^E OF OTHER RIVERS. 



can easily be distinguished, in the dun stage, by its whitish- 

 grey wings with faint greenish yellow neuration. The abdo- 

 men is greenish olive. 



The male imago has clear wings with a suggestion of yellow 

 about them and dull greenish grey neuration. The eyes are 

 light yellowish red. Thorax : brown. Abdomen : translucent 

 brown-grey, last three segments darker, ashy grey on the under- 

 side. The female spinner is similar but lighter and more 

 yellowy in the abdomen. 



Next we come to the genus Leptophlebia. It contains four 

 species, one of which L.submarginata, The Turkey Brown- 

 has already been mentioned. 



L.marginata inhabits rivers and streams, and is common on 

 some lochs. The duns have brownish wings with yellowish 

 neuration. The spinners are much alike in both sexes. 

 Wings : whitish with pale brown neuration. Thorax : pitch 

 brown between the wings changing with age to jet black. The 

 abdomen is pitch brown and the fore-legs pitch black. 



L.cincta. The dun of this species has wings of a black grey 

 colour with nervures indistinctly yellowish. The thorax is 

 pitch brown or pitch black all over and the abdomen dingy 

 brown. 



The spinners, which are much alike in both sexes, have clear 

 wings with neuration faintly amber. The abdomen is pitch 

 brown ; sometimes the abdomen of the male is translucent 

 in the middle segments. The thorax is jet black. 



L.vespertina is known to anglers as the Claret dun. This 

 fly is rather large. The dun has smoky blue-black wings and, 

 even in the very early stages of its career, the rich red abdomen 

 of the spinner particularly in the case of the female shows 

 through the envelope, thus producing the claret tint which 

 gives the fly its name. 



The spinners are very like the Sherry spinners, but richer 

 and more brilliant in colouring. Specimens have been taken 

 from the Test and Itchen, and it is a common fly in Ireland, 

 especially on Lough Arrow. 



