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Plate VIII. 

 Fig. I. Tibicen lyricen (De Geer). 

 Fig. 2. Tibicen similaris (Smith & Grossbeck). 

 Fig. 3. Tibicen biconica (Walker). 

 Fig. 4. Okanagana viridis Davis. Type. 

 Fig. 5. Okanagana viridis Davis. Allotype. 



