汉中农田常见食蚜蝇识别及其生物学习性初步观察

Identification of common syrphids in farmland of Hanzhong and primary observations on their biological habits

记述汉中地区常见食蚜蝇科昆虫26种,其中5种为陕西省新记录种。汉中地区农田优势种为长尾管蚜蝇和黑带食蚜蝇。这些种类在当地均以成虫越冬,早春时分主要活动于小麦、油菜等农田及田埂杂草丛,对当地农作物害虫蚜虫的控制及油料作物的授粉具有重要作用。

The paper recorded 26 spices is common syrphids in the farmlands of Hanzhong, among which 5 spices are newly recorded in Shaanxi Province. Eristalis tenax and Episyrphus balteatus are predominant species in the local farmland. These common species live through the winter in the form of adults, which live in the farmland of wheat, rape and among the ruderal of the ridges of field in the early spring. They are very important in control of aphid damages to wheat and rape and pollination of local oil plants.