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稻红瓢虫(Alesia discolor Fab.),又名亚麻瓢虫,在浙江富阳县一带俗称“红壳虫”。成虫每年在早稻抽穗扬花期间取食花药,造成小穗干瘪,据当地农民反映为害相当严重,经调查100个稻穗,由此虫为害形成的瘪粒率达9.2％,因此对水稻产量有—定影响。 此虫身体黑色、长约4毫米、复眼黑色,前胸橙黄色,并在前方及后缘与中胸相交处各有2个黑斑、足橙色、前翅为橙红色、有光泽,而沿着前翅的后缘为一黑线,当2翅休止相合时,成为一宽纵带,雄虫体略小,前翅色较深。 在早晚稻上均有发现,但据当地社员们反映主要为害早稻。一年发生代数还不明,在6、7月间早稻抽穗开花期间,由于稗草抽穗早于水稻,因此最先在稗草上活动,当水稻抽穗后就取食稻花的花药,小穗被害后呈白色而干瘪。特别是早熟品种,因抽穗较一般品种为早,就集中在这些品种上为害,所以损失也较重。
Red ladybug (Alesia discolor Fab.), Also known as flax ladybug, commonly known as “red beetle” in Fuyang County, Zhejiang Province. According to the local peasants, the damage caused by the pests is very serious. After 100 rice ears were surveyed, the rate of shrunken grains formed by insects was 9.2%, so the yield of rice was - Fixing effect. This insect body black, about 4 mm, compound eyes black, yellow orange chest, and in the front and rear edge and the middle of the chest each have two dark spots, orange enough, the front wings orange-red, shiny, and along The trailing edge of the forewing is a black line, becoming a wide longitudinal band when the 2-winged equinoxes coincide, and the male is slightly smaller with a darker fore wing. In both morning and evening rice were found, but according to local members reflect the main damage to early rice. It is still not clear that one generation of algebra occurs during the early-heading heading stage in June and July. Since barnyard grass heading earlier than rice, it is the first activity on barnyardgrass. When the rice is eaten, the anther and spikelet After the white and dry. In particular, precocious varieties, due to heading earlier than the average species, concentrate on these species damage, so the loss is also heavier.