NORTH AMERICAN TETRASTICHUS — BURKS 



523 





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Figure 20. — Wings of Tetrastichus 



a, T. johnsoni Ashmead: Forewing. 



b, T. brevistigma Gahan: Forewing. 



c, T. ovipransus Crosby and Leonard: Forewing. 



d, T. triozae, new species: Anterobasal area of forewing. 



e, T. dyrus, new species: Anterobasal area of forewing. 

 /, T. polynemae Ashmead: Hindwing. 



g, T. asparagi Crawford: Hindwing. 

 h, T. ainsliei Gahan: Hindwing. 

 t, T. carinatus Forbes: Hindwing. 



