New distribution areas and identification characters of Loxostege sticticalis L. (Lepidoptera: Crambidae)

Abstract

In this study, the distribution area, density, and damage of Loxostege sticticalis were determined in this area. In addition, information about the characteristics and identification characters of the male and female is given. The study was conducted in the laboratory and field studies. In field studies, samples were taken from Istanbul, Kocaeli, Sakarya, Düzce and Bolu. The adult density was determined using light traps, sweep-net, and visual control methods. Migratory adults of L. sticticalis were detected on shrubs and herbaceous plants in Bolu, Düzce, Kocaeli, İstanbul, and Sakarya provinces. The adults of the first generation flight from the last week of June to the first half of July, and the second generation was seen from the beginning to the middle of August. Adult densities were found in İstanbul 7-15 adult m-², Kocaeli 7-8 adult m-², Sakarya 10 adult m-², Düzce 10-50 adult m-², and Bolu 5-10 adult m-² in July . Although the first generation of L. sticticalis was seen quite intensely in the region , the second generation considerably decreased. Despite its high density, serious epidemics were caused by this pest in surveyed areas (except for two locations). Loxostege sticticalis was detected first in Bolu, Kocaeli, and Sakarya provinces, and number and distribution areas were determined with the identification characteristics of the pest. This study will form a basis for future studies and contribute to be the control programs.

Keywords

• Loxostege sticticalis
• first record
• identification.
• Distribution
• Damage

Çayır tırtılı, Loxostege sticticalis L. (Lepidoptera: Crambidae)’in yeni yayılış alanları ve teşhis karakterleri

Öz

Bu çalışmada, bu bölgede Loxostege sticticalis’in yayılış alanı, yoğunluğu ve zararı belirlenmiştir. Ayrıca erkek ve dişilerin karakteristik özellikleri ve teşhis karakterleri ile ilgili bilgiler verilmiştir. Çalışmamız laboratuvar ve arazi çalışmaları şeklinde yürütülmüştür. Arazi çalışmalarında İstanbul, Kocaeli, Sakarya, Düzce ve Bolu’dan örneklemeler yapılmıştır. Örneklemelerde ışık tuzağı, atrap ve gözle kontrol yöntemleri kullanılarak zararlının ergin yoğunluğu belirlenmiştir. Göç eden L. sticticalis erginleri Bolu, Düzce, Kocaeli, İstanbul ve Sakarya illerinde çalımsı ve otsu bitkilerde gruplar halinde tespit edilmiştir. İlk dölün erginleri, haziran ayının son haftası ile temmuz ayının ilk yarısında, ikinci dölde ise ağustos ayı başı ile ortasına kadar uçuşlarını sürdürmüştür. Ergin yoğunlukları Temmuz ayında; İstanbul’da 7-15 adet m-², Kocaeli’de 7-8 adet m-², Sakarya’da 10 adet m-², Düzce’de 10-50 adet m-² ve Bolu’da 5-10 adet m-² bulunmuştur. Loxostege sticticalis, ilk dölde bölgede oldukça yoğun bir şekilde görülmesine karşın ikinci dölde yoğunluğu oldukça azalmıştır. Zararlı yoğunluğu oldukça fazla olmasına karşın sürvey yapılan alanlarda ciddi epidemi meydana getirmemiştir. Loxostege sticticalis; Bolu, Kocaeli ve Sakarya illerinde ilk kez tespit edilerek zararlının teşhis özellikleri ile birlikte bölgede yayılış alanları ve yoğunlukları tespit edilmiştir. Bu çalışma daha sonra yürütülecek çalışmalara altyapı oluşturarak ve mücadele programlarının oluşturulmasına katkıda bulunacaktır.

Anahtar Kelimeler

• Loxostege sticticalis
• dağılımı
• ilk kayıt
• tanımı
• Zarar

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