1. The European beewolf (Philanthus triangulum, Hymenoptera, Crabronidae)

- Biology of the European beewolf.

- Evolution of the male sex pheromone.

- Symbiotic bacteria in beewolf antennae.

- Morphology, ultrastructure and phylogeny of beewolf exocrine glands.

- Phylogeny of the genus Philanthus.

- Interactions with the cuckoo wasp Hedychrum rutilans.


2. The sweat bee Lasioglossum malachurum (Hymenoptera, Halictidae)

- Variability in life-history strategies.







3. The red mason bee Osmia bicornis (Hymenoptera, Megachilidae)

- Breeding biology, investment allocation and larval performance.