Satellite flies (Leucophora sp.) are nest parasites of various bee species. They force entry to the nest and lay an egg on the food packet of the host. The females have a typical chase behavior; this has been observed in Leucophora obtusa (det. H.J. Prijs), following females of Andrena nitida. L. obtusa is not found on the checklist for Diptera in the Netherlands. Different possibilities are compared with each other concerning how the larve finds its food and how the brood parasite is able to leave the host's nest.

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