Fig. 5. Water potentials for goldenrod gall tissue and E. solidaginis hemolymph from 20 September to 30 October 2001. Water potential of the larval hemolymph was mathematically derived from osmolality values in Fig. 2C. An asterisk indicates a significant difference between gall and larval values for the same date of collection (P<0.05). Values are mean ± S.E.M., N=10 for all values except gall tissue measurements on 30 October where N=5.