Schematic of the Y-tube olfactometer used to test parasitoid attraction to host volatiles.

 
 
  Part of: Glasser SK, Farzan S (2016) Host-associated volatiles attract parasitoids of a native solitary bee, Osmia lignaria Say (Hymenoptera, Megachilidae). Journal of Hymenoptera Research 51: 249-256. https://doi.org/10.3897/jhr.51.9727