Zanuncio José C, Torres Jorge B, Sediyama Camilla A Z, Pereira Fabricio F, Pastori Patrik L, Wermelinger Eduardo D, Ramalho Francisco S
Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brasil, 36571-000.
An Acad Bras Cienc. 2009 Mar;81(1):61-6. doi: 10.1590/s0001-37652009000100008.
Euselasia eucerus (Hewitson, 1872) (Lepidoptera: Riodinidae) is a Brazilian native species commonly found in Eucalyptus plantations. Biotic mortality factors of this defoliator were studied in a Eucalyptus urophylla plantation in Minas Gerais State, Brazil aiming to identify natural enemies and their impact on this insect. Euselasia eucerus had biotic mortality factors during all development stages. The most important were Trichogramma maxacalii Voegelé and Pointel, 1980 (Hymenoptera: Trichogrammatidae) during egg stage (48.9%), a tachinid fly (Diptera: Tachinidae) during larval stages (10%) and Itoplectis sp. (Hymenoptera: Ichneumonidae) during pupal stage (52.2%). The parasitism rate was higher in the basal part of the plant canopy (37.8%).
尤氏优塞弄蝶（Euselasia eucerus）（休伊特森，1872年）（鳞翅目：弄蝶科）是一种原产于巴西的物种，常见于桉树林中。在巴西米纳斯吉拉斯州的一片尾叶桉种植园中，对这种食叶害虫的生物致死因素进行了研究，旨在确定其天敌及其对该昆虫的影响。尤氏优塞弄蝶在其所有发育阶段均存在生物致死因素。其中最重要的是卵期的麦氏赤眼蜂（Trichogramma maxacalii）（沃格勒和波因特，1980年）（膜翅目：赤眼蜂科）（致死率48.9%）、幼虫期的一种寄蝇（双翅目：寄蝇科）（致死率10%）以及蛹期的伊托普列克寄蝇属（Itoplectis sp.）（膜翅目：姬蜂科）（致死率52.2%）。树冠基部的寄生率较高（37.8%）。
