Aleyrodidae in three forest fragments in the state of Rio de Janeiro, Brazil

ABSTRACT: Studies that analyze the occurrence of whiteflies in forest environments are virtually non-existent, which is not justifiable given the ecological and agronomic importance of this insect group. The study aimed to evaluate the occurrence of Aleyrodidae collected from May/2013 to May/2014 in three Atlantic forest fragments in state of Rio de Janeiro, Brazil. Of all, 1,212 puparia were collected, and five genera and seven species of whiteflies occurring in nine hosts were identified. Aleuropleurocelus cecropiae was the only aleyrodid registered simultaneously occurring in Cecropia hololeuca in the three environments, with lower records in the two fragments considered as less anthropized. For the first time, Aleurothrixus floccosus was registered on Handroanthus ochraceus and Mangifera indica. In addition, it was observed the first register of Bemisia tabaci on Commelina benghalensis and Caesalpinia pluviosa. Minutaleyrodes minuta on Syzygium cumini was also the register of a new occurrence.

摘要：针对森林环境中粉虱发生情况开展的研究鲜有报道，鉴于该昆虫类群兼具重要的生态学与农艺学价值，此类研究的缺失并无合理依据。本研究旨在调查2013年5月至2014年5月间，巴西里约热内卢州3处大西洋森林片段中采集的粉虱科（Aleyrodidae）昆虫的发生情况。本次研究共采集到1212个粉虱蛹壳，鉴定出隶属于5属7种的粉虱，其寄主涵盖9种植物。Aleuropleurocelus cecropiae是唯一同时在3处生境的Cecropia hololeuca上被记录的粉虱，在两处被认为人为干扰程度更低的森林片段中，其记录量相对偏少。本研究首次在Handroanthus ochraceus与Mangifera indica上记录到Aleurothrixus floccosus。此外，首次在Commelina benghalensis与Caesalpinia pluviosa上发现烟粉虱（Bemisia tabaci）。在Syzygium cumini上采集到的Minutaleyrodes minuta同样属于一项新的分布记录。