期刊
STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT
卷 43, 期 1, 页码 25-33出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/01650520701322701
关键词
argentina; Delphacodes kuscheli; immature stages; key; maize disease vector; morphology
类别
Delphacodes kuscheli Fennah is the most efficient vector of Mal de Rio Cuarto virus (MRCV) maize disease in Argentina, which is caused by a persistently transmitted fijivirus. Delphacodes kuscheli is abundant in a wide area of Central Argentina (32-35 degrees S), affecting oat, wheat and maize crops, and weeds. All five immature instars of D. kuscheli are described, keyed and illustrated. A key is provided to highlight the main features for identification of the fifth-instar nymphs of three other Delphacid species on maize. Adults of D. kuscheli were reared under controlled conditions in individual glass cages containing oat plants. The description of each instar was based on 1-day-old nymphs. Coloration pattern, shape of frons, length of the rostrum segments, and length, shape and number of spur teeth are useful features for identification of the fifth nymphal instars of these species.
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