Euchloe ausonia (H?bner) (Lepidoptera: Pieridae) oviposition on Brassica nigra (L.) Koch (Cruciferae): big immature plants are preferred.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith