The appearance of moths of the genus Ephestia and Plodia which are harmful to stored products, outside of warehouses and food processing factories in Germany
1987
Wohlgemuth, R. (Biologische Bundesanstalt fuer Land- und Forstwirtschaft, Berlin (Germany, F.R.). Inst. fuer Vorratsschutz) | Reichmuth, C. | Rothert, H. | Bode, E.
Since written information about the appearance of moths Ephestia elutella, E. cautella, E. kuehniella, and Plodia interpunctella which are harmful to stored products, is somewhat limited and uncertain, investigations into the appearance of the four species of moths out of doors, were carried out in 1982 and 1983 in Berlin (West) and in the Brunswick area (Lower Saxony) in 1984, using 'Biotrap(R)' as bait in the traps. In both of the investigation areas male moths of all types appeared in the inner city zone (the numbers of the moths caught in Berlin are as follows, starting with the largest group: P. interpunctella, E. kuehniella, E. elutella, E. cautella). On the outskirts of both cities and in their park-like areas as well as in the rural country-side surrounding Brunswick, E. cautella was missing from the traps, probably because there is little or nothing there which is liable to infestation (nuts and cocoa beans) and which might give rise to the open-air appearance of the moths. In specially baited traps (pheromone and broken almonds) and in the vicinity of heavily infested objects, a very small number of female moths was also caught. The results of all investigations show that moths which are harmful to food supplies, are to be found out of doors. The well-founded assumption that they might reinfest appropriate goods should be taken into consideration with respect to storage, especially since it has hitherto been taken for granted that an infestation can only arise from the storage of infested products
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