The preimaginal stages of Pnigalio gyamiensis Myartseva & Kurashev, 1990 (Hymenoptera, Eulophidae), a parasitoid associated with Chrysoesthia sexguttella (Thunberg) (Lepidoptera, Gelechiidae) |
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Authors: | Ekaterina Yegorenkova Zoya Yefremova |
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Institution: | Department of Geography, Ulyanovsk State Pedagogical University, Ulyanovsk, 432700, Russia. |
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Abstract: | The larval instars of Pnigalio gyamiensis Myartseva and Kurashev are described in detail for the first time. This species is a larval-pupal ectoparasitoid of Chrysoesthia sexguttella (Thunberg) (Lepidoptera, Gelechiidae), which forms leaf mines in the plant Chenopodium album L. (Caryophyllales: Amaranthaceae). The female of Pnigalio gyamiensis lays a single egg on the skin of the host larva or nearby it, without any significant preference for a particular variant. The presence of long hairs on its body provides the newly-hatched first larval instar with high mobility. Some peculiarities in this parasitoid-host relationship are described. |
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Keywords: | Chalcidoidea Eulophidae Pnigalio gyamiensis Chrysoesthia sexguttella preimaginal morphology physiological larval functions |
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