1. Important announcement

   Announcement Pages: 331 - 331

2. Parasite presence acts as a proximate cue in the nest-site selection process of the solitary digger wasp,Ammophila dysmica (Hymenoptera: Sphecidae)

   • Jay A. Rosenheim

   OriginalPaper Pages: 333 - 342

3. Plant wound compounds from oviposition scars used in host discrimination by a stem-galling sawfly

   • Timothy P. Craig
   • Joanne K. Itami
   • Peter W. Price

   OriginalPaper Pages: 343 - 356

4. Effects of varying sex pheromone component ratios on the zigzagging flight movements of the oriental fruit moth,Grapholita molesta

   • Mark A. Willis
   • Thomas C. Baker

   OriginalPaper Pages: 357 - 371

5. Timing of landmark learning by honey bees

   • James L. Gould

   Short Communication Pages: 373 - 377

6. Lobe erection behavior and its possible social role in larvae ofMischocyttarus paper wasps

   • James H. Hunt

   Short Communication Pages: 379 - 386

7. The influence of previous foraging experience on microhabitat acceptance inLeptopilina heterotoma

   • Louise E. M. Vet
   • Gosien Schoonman

   Short Communication Pages: 387 - 392