Abstract：
Zatrephina lineata (Coleoptera: Chrysomelidae) is a phytophagous insect, mainly of plants of the genera Ipomoea and Mikania. The objective was to study the development, survival and to describe the life stages of Z. lineata fed on leaves of Ipomoea pes-caprae. Biological observations were made daily with the aid of a stereoscopic microscope and the instars of this insect identified by the exuvia left between one moulting and the next. The duration of development and survival of the egg, larva and pupa stages and the first, second, third, fourth and fifth instars and of the nymph stage of Z. lineata differed, but not between sexes of this insect. The duration of development of Z. lineata was longer in the larval stage and in the fifth instar, and its survival greater in the egg and pupa stages and in the first and fifth instars. Zatrephina lineata eggs, cream-colored, are ellipsoid and deposited in groups on the adaxial surface of older I. pes-caprae leaves. The larvae of this insect go through five instars, with the first three being gregarious with chemo-behavioral defenses. The exarated pupae of Z. lineata, light yellow in color and with an oval shape flattened dorsoventrally, attach to the abaxial surface of the I. pes-caprae leaves. The shape of adults of this insect is oval, straw yellow in color with lighter longitudinal stripes and females are slightly larger than males.
摘要：
Zatrephinalineata（鞘翅目：菊科）是一种植食性昆虫，主要属梨花属和薇甘菊属植物。目的是研究发展，生存并描述Z.lineata的生命阶段。每天都在立体显微镜的帮助下进行生物学观察，并在一次蜕皮和下一次蜕皮之间留下了由exvia识别的这种昆虫的幼虫。卵的发育和存活的持续时间，幼虫和蛹的阶段，第二,第三,第四龄和第五龄和Z.lineata若虫阶段不同，但不是这种昆虫的性别之间。Z.lineata的发育持续时间在幼虫期和第五龄更长，在卵和蛹阶段以及第一和第五龄幼虫中，它的存活率更高。Zatrephinalineata卵，米色,呈椭圆形，并成组沉积在较老的I.pes-caprae叶子的正面。这种昆虫的幼虫经历了五个幼虫，前三个是群居的化学行为防御。Z.lineata的珍藏蛹，浅黄色，呈椭圆形，腹侧呈扁平状，附着在I.pes-caprae叶子的背面。这种昆虫的成虫形状是椭圆形的，稻草黄色，纵向条纹较浅，雌性比雄性稍大。
