AMERICAN TROUT-STREAM INSECTS 



used on windy days. A more detailed description 

 of this insect will be given in May, when it is much 

 more abundant. 



No. 11. Needle spinner. This flies around 

 early, along with various duns and small drakes, 

 in the daytime on warm days. It is quite plentiful, 

 congregating in bunches six feet above the water's 

 surface, to drop down now and then and also to as- 

 cend higher. It will prove effective when lightly 

 dropped onto the surface and floated along a run- 

 way. 



No. 12. Nobby spinner. This is larger than 

 the previous insect, and appears later in the month, 

 on warm days, mostly afternoons. When the sun 

 is absent it finds a sheltered spot, to be protected 

 from the cold. 



No. 13. Little Mauve. An early, dark-colored 

 dun, commonly called a black gnat — indeed, the na- 

 tives style a great many insects of the dun class the 

 black gnat. It is an excellent small fly, and the 

 imitation may be used all month. 



In fact, all these April duns are useful nearly 

 every month of the season, being so similar to the 

 insects that rise later in warm weather; for that 

 reason a supply should always be kept in stock: 

 when the larger drakes are absent the dark, small 

 duns induce trout to rise. 



No. 14- Cocktail dun. A somewhat larger, 

 brownish dun, with two long feelers and long hind 



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