FIG. 10 (i). Spatial distribution of UastropAysa polygmi (Coleoptera: Chrpomelidae) in cereals in the
W e s t Sussex study area, in 1970 and 1971. The amp led fields are stippled, fields which contained
Gastrophpa are shaded. Broken line encloses 6 area for the species judging from visual
observations in addition to sampling.