Three members of the Dutch Entomological Society, section Hymenoptera, on their way to the summer meeting, visit two water meadows alongside the river Maas. The aculeate fauna of the small Stalberg is in􀃽uenced by the nearby forest. The fauna of the open landscape of the Isabllegreend is very rich, with many endangered species. A large clay body offers nesting places for some rare eumenids.