August, 1944 



Ross: Caddis Flies of Ilunois 



79 



2. Apical processes rounded at apex, not 



bifurcate, figs. 308, 309 3 



Apical processes bifurcate at apex, 

 figs. 310-313 4 



3. Apical processes fiat, wide and ap- 



pressed, hairy along lateral and 

 dorsal margins, fig. 308; second 

 hook-bearing plate of third segment 

 narrow and linear 



Macronemum, p. 114 



Apical processes finger-like and widely 

 separated, hairy chiefly at apex, 

 fig. 309; second hook-bearing plate 



of third segment ovoid 



Smicridea, p. 85 



Tips of apical processes very long and 

 sharp, fig. 310 Diplectrona, p. 84 



3I2A 



Apical Processes ot Pupae 

 A, caudo-ventral aspect; B, lateral aspect. 



313 A 



Fig. 306. — Parapsyche cardis. 

 Fig. 307. — Hydropsyche simulans. 

 Fig. 308. — Macronemum zebratum. 

 Fig. 309. — Smicridea fasciatella. 



Fig. 310. — Diplectrona modesta. 



Fig. 311. — Arctepsyche sp. 



Fig. 312. — Potamyia flava. 



Fig. 313. — Cheumatopsyche campyla. 



