稻显纹纵卷叶螟的形态特征及其与稻纵卷叶螟的比较

doi:10.16380/j.kcxb.2017.01.011

昆虫学报 ›› 2017, Vol. 60 ›› Issue (1): 95-103.doi: 10.16380/j.kcxb.2017.01.011

稻显纹纵卷叶螟的形态特征及其与稻纵卷叶螟的比较

冯波¹，尹勇²，封传红²，彭晓明3，姜海平⁴，郭荣⁵，杜永均^1，*

(1. 温州医科大学健康与环境生态研究所，浙江温州 325035； 2. 四川省农业厅植物保护站，成都 610041；3. 四川省叙永县植物保护站，四川叙永646000；4.江苏省如东县植物保护站，江苏如东 320600；5. 全国农业技术推广服务中心，北京 100080)

出版日期:2017-01-20 发布日期:2017-01-20

Morphological characteristics of Cnaphalocrocis exigua in comparison with C. medinalis (Lepidoptera： Pyralidae)

FENG Bo¹， YIN Yong²， FENG Chuan-Hong²， PENG Xiao-Ming³， JIANG Hai-Ping⁴， GUO Rong⁵， DU Yong-Jun^1，*

(1. Institute of Health and Environmental Ecology， Wenzhou Medical University， Wenzhou， Zhejiang 325035， China； 2. Plant Protection Station， Department of Agriculture of Sichuan Province， Chengdu 610041， China； 3. Plant Protection of Xuyong County， Xuyong， Sichuan 646000， China； 4. Plant Protection of Rudong County， Rudong， Jiangsu 320600， China； 5. National Agro-tech Extension and Service Center， Beijing 100080， China)

Online:2017-01-20 Published:2017-01-20

摘要/Abstract

摘要： 【目的】水稻纵卷叶螟是我国大部分水稻种植区中的一类重要害虫，主要包括稻纵卷叶螟Cnaphalocrocis medinalis和稻显纹纵卷叶螟C. exigua。由于稻显纹纵卷叶螟的研究报道很少，加上形态特征和危害习性相似，稻纵卷叶螟和稻显纹纵卷叶螟常被混淆鉴定。本研究旨在明确快速准确地鉴定稻纵卷叶螟和稻显纹纵卷叶螟的形态特征。【方法】描述了稻显纹纵卷叶螟幼虫、蛹和成虫，以及稻纵卷叶螟幼虫的外部形态特征，解剖了稻显纹纵卷叶螟雌雄成虫的生殖系统，比较了稻显纹纵卷叶螟和稻纵卷叶螟幼虫和成虫的形态差异。【结果】稻显纹纵卷叶螟幼虫淡黄色，前胸、中后胸和腹部分别有骨片2， 12和5个，分成1， 3和2排；蛹末端有指状突起，其上着生8根毛；成虫前翅淡黄色，条带褐色，前缘横带宽，外缘纵带呈C形，内线和外线平行，中线达翅后缘；雄性睾丸金黄色，射精管和附腺长，贮精囊和输精管短，抱器瓣骨化弱，表面密被长毛，阳茎囊有两根骨刺；雌性卵巢短，侧、中输卵管长度相似，交配囊长。幼虫胸部的骨片颜色和中后胸骨片的排列方式，成虫翅颜色、条带的形状和长度及内线和外线的排列，抱器瓣的骨化程度和结构以及阳茎囊上的骨化物等可分别作为稻纵卷叶螟和稻显纹纵卷叶螟幼虫和成虫准确鉴别的依据。【结论】本研究结果保证了稻纵卷叶螟和稻显纹纵卷叶螟的准确鉴定，为稻纵卷叶螟的精准测报奠定了基础。

关键词: 稻显纹纵卷叶螟, 稻纵卷叶螟, 幼虫, 成虫, 形态, 生殖系统

Abstract: 【Aim】 Rice leaffolders are among the most important pests of rice crops， and mainly include Cnaphalocrocis exigua and C. medinalis in China. Because only a few studies have been done on C. exigua and the two species have similar morphology and habits， they are generally confused. The study aims to reveal the morphological characteristics distinguishing C. exigua from C. medinalis.【Methods】 The morphological characteristics of larvae， pupae and adults of C. exigua and C. medinalis larvae were described， the reproductive systems of male and female adults of C. exigua were dissected， and the morphological differences between C. exigua and C. medinalis were compared. 【Results】 For C. exigua， the sclerite numbers of prothorax， mesothorax and metathorax， and abdomen in larva are 2， 12 and 5， respectively， which are arranged into 1， 3 and 2 rows， respectively. There is a finger-shape process at the terminal end of pupal abdomen， which bears 8 setae. Forewing is yellowish， with brown bands. The band in the costal margin is wide, while the longitudinal band in the outer margin is C-shaped. Transverse anterior line and transverse posterior line are parallel with each other and the median line reaches the posterior margin of forewing. Male testis is golden yellow， and accessory glands and ejaculatory ducts are long but deferent ducts and seminal vesicles are short. The weakly sclerotized male valva is densely covered with long hair. There are two sclerotized thorns in the vesica of aedeagus. The female ovary is short， the length of the lateral oviducts and the common oviduct are similar， and bursa copulatrix is long. The color of sclerites in thorax and the arrangement of sclerites in mesothorax and metathorax can be used to identify the larvae of C. exigua from C. medinalis. The color of forewing， the shape and the length of bands in forewing， the arrangement of transverse anterior line and transverse posterior line， the sclerotization of valva and the sclerotized zone in the vesica can be used to identify the adults of C. exigua from C. medinalis. 【Conclusion】 The results can be used for the accurate identification of larvae and adults of C. exigua and C. medinalis， providing a basis for the accurate forecast of C. medinalis.

Key words: Cnaphalocrocis exigua, Cnaphalocrocis medinalis, larva, adult, morphology, reproductive system

冯波, 尹勇, 封传红, 彭晓明, 姜海平, 郭荣, 杜永均. 稻显纹纵卷叶螟的形态特征及其与稻纵卷叶螟的比较[J]. 昆虫学报, 2017, 60(1): 95-103.

FENG Bo, Yin Yong, Feng Chuan-Hong, Peng Xiao-Ming, Jiang Hai-Ping, GuoRong, Du Yong-Jun. Morphological characteristics of Cnaphalocrocis exigua in comparison with C. medinalis (Lepidoptera： Pyralidae)[J]. Acta Entomologica Sinica, 2017, 60(1): 95-103.

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链接本文: http://www.insect.org.cn/CN/10.16380/j.kcxb.2017.01.011

http://www.insect.org.cn/CN/Y2017/V60/I1/95

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稻显纹纵卷叶螟的形态特征及其与稻纵卷叶螟的比较

Morphological characteristics of Cnaphalocrocis exigua in comparison with C. medinalis (Lepidoptera： Pyralidae)

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