20 



EPHEMERIDAE WITH THREE SETAE. 



Ephemera danica 

 vulgata 

 lineata 



Ephemerella ignita 

 notata 



Leptophlebia marginata 



submarginata 



cincta 

 vespertina 



Potomanthus luteus 



/ Green drakes (subimagines only) 

 May-fly ! Black drake (male imago only). 

 l Spent gnats (imagines only). 

 Blue-winged Olive and Sherry Spinners. 



Dun wings, whitish grey. Spinners like- 

 Sherry Spinners. 



Common on some lochs. Red Spinners. 



Turkey Brown. Spinners like Sherry 

 Spinners. 



Dun wings are nearly black. 



Claret dun. Dun wings bluish black. Red 

 Spinners. 



A night fly. Dun yellow. Spinners like 

 Sherry Spinners. 



The smallest three-pronger with four wings. 



| Very minute forms. 



Small. 



hOnly two wings. 



Habrophlebia fusca. 

 Caenis dimidiata 



rivuloruni 



halterata 



harrisella 



EPHEMERIDAE WITH TWO SETAE. 



Centroptilum lutecium \ 



pennulatum I Pale watery. Red Spinner, sometimes golden 



Baetis binoculatus (female only), 



scambus 



vernus 



rhodani 



atrebatinus 



tenax 



buceratus 



pumilus 

 niger 



Ecdyurus venosus 

 insignis 

 volitans 



lateralis 

 unnamed 



Rhithrogena semicolorata 



Heptagenia sulphurea 

 flavipennis 

 Ameletus inopinatus 

 Siphlurus armatus 

 lacustris 

 Cloeon dipterum 

 simile 

 rufulum 



Olive. Red Spinner (female only). 



Jenny Spinner (male only)A 

 Iron Blue and 



Red Spinner (female only). 



March Brown and Great Red Spinners. 



Dun wings light brown-grey. 



Spinners like Great Red Spinners, but 



smaller. 

 Dun like a Blue -winged Olive, but with two- 



setae. 

 Autumn Dun and Great Red Spinners. 



( Yellow Upright. Dun like a large pale Olive. 

 ( Spinners like H. sulphurea and H. flavipennis. 



Little Yellow May Dun. Spinners like- 

 Yellow Upright. 



Rare. 

 Large. 



) Only two wings. 



| Only found in quiet water or lakes 



