Biology of the Euonymus scale Unaspis euonymi Hemiptera: Diaspididae in Urban Areas of Ankara, Turkey

Abstract

Unaspis euonymi is an important pest of Euonymus plants in parks and gardens of Ankara. In this study, the biology of U. euonymi was investigated in 2002 and 2003. The euonymus scale overwintered as mated adult females and had two generations per year. Crawlers of the first generation were present from midMay to mid-June and those of the second generation during July. The maximum number of eggs counted in a female body was 70,8; the greatest number laid in a day was 10,8. Adult females were more abundant on the branches than the leaves. In contrast, adult males were more abundant on leaves than on branches. The number of predator species Coccinellidae: Adalia bipunctata L. , Chilocorus bipustulatus L. , Exochomus quadripustulatus L. : Nitidulidae: Cybocephalus sp.; Neuroptera: Chrysoperla sp. was low and inefficient

Keywords

• Euonymous,Unaspis euonymi,Euonymus scale,biology,urban,Ankara

Ankara İli Yeşil Alanlarında Taflan Kabuklubiti Unaspis euonymi Hemiptera:Diaspididae ’nin Biyolojisi

Öz

Unaspis euonymi Comstock Taflan kabuklubiti Ankara parklarında taflanların en önemli zararlısıdır. 2002-2003 yıllarında yapılan bu çalışmada U. euonymi’nin biyolojisi araştırılmıştır. Kışı döllenmiş dişi olarak geçirmekte ve yılda iki döl vermektedir. I.dölün hareketli larvaları mayıs ortasından haziran ortasına kadar, ikinci dölün hareketli larvaları ise Temmuz ayı boyunca görülmektedir. Dişilerin dallara, erkeklerin ise yaprak üzerinde daha fazla sayıda yerleştiği gözlenmiştir. Ankara park ve yeşil alanlarında Adalia bipunctata L. , Chilocorus bipustulatus L. , Exochomus quadripustulatus L. Coleoptera: Coccinellidae , Cybocephalus sp. Coleoptera: Nitidulidae ve Chrysoperla sp. Neuroptera: Chrysopidae türlerinin az sayıdaki bireylerinin taflan kabuklubiti ile beslendiği ancak ve zararlı populasyonu üzerinde etkisiz oldukları gözlenmiştir.

Anahtar Kelimeler

• Taflan,Unaspis euonymi,Taflan kabuklubiti,biyoloji,yeşil alan,Ankara

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