Die Fangleistung von Lichtfallen für in Obstanlagen häufige Wickler in Abhängigkeit von Konstruktion und Lichtfarbe1

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Abstract
The efficiency of light traps for catching tortricids frequent in apple orchards dependent on construction and light colour. An improved light trap for catching some species of Tortricidae frequent in apple orchards is described. The optimal trap type is characterized by the following features of construction:vertical fluorescent tube, surrounded with a plastic net and flanked by two baffles; protected against raining by a shelter. The light colour is depending on the wanted moths. For trapping Adoxophyes reticulana, Archips rosanus, Carpocapsa pomonella, Cnephasia wahlbomiana, Olethreutes variegana, Pandemis heparana and P. ribeana UV‐fluorescent tubes are more suitable, while Archips podanus, Argyroploce umbrosana and Euxanthis hamana more respond to green light. The plastic net causes a selection of the catch. Contrary to many commonly used trap types which are catching an enormous quantity of insects besides of the moths wanted, using the improved light trap in some nights even more Tortricidae than other Lepidoptera are captured.

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