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柿斑叶蝉(Erythroneura sp.)在山东荷泽地区柿园和零星柿树上普遍发生。1969—1972,1974—1975年我们对此虫做过一些观察。鉴于国内尚未有关于此虫的报道,故将部分结果整理如后。 一、为害和寄主 以成、若虫聚集叶背,初沿叶脉吸食汁液,叶面出现褪绿斑点,叶背无任何症状。以后随着受害加重,斑点密集并遍及整个叶片。至7月中下旬以后被害叶片苍白、上卷,中脉附近的组织变褐。至9月中旬大量脱落,严重影响树势。越冬卵产在当年生枝条的皮层内,也影响树体的正常生理。 通过调查和接虫试验,证实柿斑叶蝉只为害柿树(品种间无差异)。第一代成虫盛发时,有极少数只取食同株柿树上君迁子(Diospyros lotus L.)的叶片,但并不在上面产卵。
Erythroneura sp. (Erythroneura sp.) Occurs frequently in Shiyuan and sparse persimmon trees in Heze, Shandong Province. 1969-1972, 1974-1975 We made some observations about this worm. In view of the fact that there are no reports about this pest in our country, some results will be sorted out as follows. First, the damage and the host into, nymphs gather leaf back, early along the veins sucking juice, leaves appear chlorotic spots, leaf back without any symptoms. Later as the victim aggravates, the spot is dense and extends throughout the leaf. To late July after the victim leaves pale, on the roll, tissue near the midrib brown. To a large number of off in mid-September, seriously affecting the tree potential. Wintering egg production in the current year branches of the cortex, but also affect the normal physiological tree. Through the investigation and pick test, it was confirmed that the persimmon tree persimmon leafhopper (no difference between varieties). In the first generation of adults, there were very few leaves that fed only Diospyros lotus L., but did not spawn on them.