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梨蝽象(花壮异蝽)Urochela luteovaria Distant,俗名臭板板,属半翅目,异蝽科。据文献记载,梨蝽象除危害梨树外,苹果、杏、李、桃、樱桃等亦受其害。我省黄河沿岸的贵德、尖扎、化隆、循化、民和及西宁、湟中、平安、互助、乐都等县(市)均有发生。笔者在尖扎康扬等地调查,苹果树被害株率达80％左右。其越冬若虫从果树发芽时开始活动,直到深秋,逐渐分散到幼芽、花蕾、嫩叶、绿枝和果实上吸食汁液,羽化为成虫后危害尤甚。梨蝽象的若虫和成虫栖居叶背及树枝阴面刺吸汁液,被害叶、枝逐渐失绿变褐,严重者枝梢枯死。
Pear-like (Ursus maritimus) Urochela luteovaria Distant, commonly known as smelly board, is a Hemiptera, Yiwuke. According to the literature, pear pests like pear, peach, apple, apricot, plum, peach, cherry also suffer. There were occurrences of Guiding, Jianzha, Hualong, Xunhua, Minhe and Xining, Langzhong, peace, mutual aid and Ledou counties (cities) along the Yellow River in our province. The author in Jiacang Yang and other places surveyed, apple tree victimization rate of about 80%. The overwintering nymphs began to germinate from the fruit trees until late autumn, gradually dispersed to sprouts, buds, young leaves, green branches and fruits on the juice, the emergence of adults is particularly harmful. Nymphs such as pests and adults dwelling on the dorsal and branches of the dwelling dendrites suck the juice, and the leaves and branches of the pests gradually become greenish and brownish, and the shoots are severely wilted.