Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

Selection of alien natural enemies of Diabrotica beetles for studies on their potential as biological control agents against WCR (Western Corn Rootworm) in Europe

Celatoria compressa (Diptera: Tachinidae) was selected to be further tested on its suitability as a classical biological control agent for D. v. virgifera in Europe, i.e. on its reproductive biology, on its potential host range among European target and non-target species, and on the development of an efficient rearing technique.

- It has been found on many species in four different genera of Diabroticina beetles. The key hosts seem to be A. trivittata (Mannerheim), D. tibialis Baly and D. v. virgifera LeConte.

- It was collected at higher altitudes in Central and northern Mexico.

- It is possible to rear this species on D. virgifera in laboratory.

- It is reproducing in European and American D. virgifera.

The adult parasitoid Celatoria compressa was the only parasitoid, which fullfilled the four requirements, i.e. to originate from the target host, to fit into European climate conditions, to easily reproduce under quarantine conditions, and to attack and parasitise the European and American strain of WCR (Western Corn Rootworm).

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