初步调查了荔枝、龙眼果园昆虫,并通过查阅标本和相关资料,整理记录龙眼、荔枝果园昆虫标本158种,隶属11目61科,其中,种类较多的有夜蛾科15种、蝽科8种、灰蝶科9种、天蛾科9种、蚧总科7种、蛱蝶科6种、瘿蚊科1种。害虫包括8目2总科27科71种,危害严重的害虫有10种。荔蝽、龙眼角颊木虱、荔枝叶瘿蚊、鬼尺蠖、荔枝蒂蛀虫、三角新小卷蛾、褐带长卷叶蛾、龙眼亥麦蛾、鸟嘴壶夜蛾、荔枝蝽尺蛾等对荔枝龙眼危害严重。荔枝害虫的多样性指数全年变动范围为0.091 9~2.693 8,均匀度指数为0.076 2~0.899 3。从以上数据分析,荔枝害虫群落的优势地位明显,生态优势度较大。在化学防治中,要注意保护平腹小蜂、蜘蛛等天敌生物。 A preliminary investigation of litchi, longan orchards insects, and by consulting the specimens and related information, finishing records of longan, litchi orchard insect specimens 158 species, belonging to 11 orders 61 families, of which more species are 15 species of Noctuidae, Pentatomidae 8 9 species of Lydeidae, 9 species of the moth, 7 species of the General Scale, 6 species of the Nymphalidae and 1 species of the Mosquito family. Pests include 8 orders, 2 families, 27 families, 71 species, and 10 pests that cause serious damage. Litchi, Long-croaker psyllid, Lychee leafworm, Lycoris chinensis, litchi pedicel, Trichosanthes trifoliata, Trichoplusia nipponense, Helicoverpa armigera, Longan serious harm. The diversity index of litchi pests ranged from 0.091 9 to 2.693 8 in a year, and the evenness index ranged from 0.076 2 to 0.899 3. From the above data analysis, the dominant position of litchi pest community obvious, greater ecological dominance. In chemical prevention and control, we should pay attention to the protection of Baphicanthus, spiders and other natural enemies.