Immature Stages and Ecological Characteristics of Idalus lineosus Walker (Erebidae: Arctiinae)
2014
Braga, Laura | Lepesqueur, Cíntia | Silva, Neuza A. P. | Harterreiten-Souza, Érica Sevilha | Tepedino, Karla Pessoa | Freire, Geraldo | Neis, Marina | Scherrer, Scheila | Nascimento, André Rangel | Motta, Paulo | Diniz, Ivone R.
The caterpillars of Idalus lineosus Walker (Arctiinae) are external folivores that specialize in eating mature leaves of Roupala montana Aubl. (Proteaceae) in the cerrado (Brazilian savannah). The aim of this study was to present morphological and ecological characteristics of the immature stages of I. lineosus. We evaluated relative abundance, seasonal variation, and parasitized proportion of I. lineosus in various sites of the cerrado. The caterpillars are solitary, exhibit morphological variation between instars, and present varied color patterns in the last larval instar. The relative abundance of the caterpillar on the host plant varies seasonally and spatially in the cerrado sensu stricto reliefs of two soil types (oxysoil and rocky soil).The caterpillars were parasitized mainly by a gregarious Hymenoptera; multiparasitism was also registered, with interactions between Apanteles sp. and Protapanteles sp., and Cidaphus sp. with Protapanteles sp.
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