Abstract

BackgroundThe largest number of species of the widespread and highly diverse micromoth genus Ypsolopha Latreille, 1796 (Lepidoptera, Yponomeutoidea, Ypsolophidae) is known from the Northern Hemisphere. Only seven species have been described from the Neotropical Region, two of which occur in Chile.New informationThe adult stage of Ypsolophachicoi sp. n. from the arid highlands of the western slopes of the Andes of northern Chile is described and illustrated. Its larvae feed on the native shrub Muehlenbeckiafruticulosa (Walp.) Standl. (Polygonaceae). The morphology of the genitalia of Y.chicoi sp. n. resembles that of the only congeneric known to occur in the same geographic area, Y.moltenii Vargas, 2018, whose larvae feed on Adesmiaverrucosa Meyen (Fabaceae). Besides using different host plants, the two species can be accurately separated, based on morphological differences in female and male genitalia.

Highlights

  • Ypsolopha Latreille, 1796 (Lepidoptera, Yponomeutoidea, Ypsolophidae) is a widespread and diverse genus of micromoths with more than 160 species described (Jin et al 2013)

  • The morphology of the genitalia of Y. chicoi sp. n. resembles that of the only congeneric known to occur in the same geographic area, Y. moltenii Vargas, 2018, whose larvae feed on Adesmia verrucosa Meyen (Fabaceae)

  • The largest number of species of this genus is known from the Northern Hemisphere and additional representatives continue to be discovered there (Sohn et al 2010, Ponomarenko and Zinchenko 2013, Na et al 2016, Corley et al 2019, Ponomarenko 2020, Sachkov and Zolotuhin 2020, Corley and Ferreira 2021), while the knowledge of the Neotropical fauna is currently restricted to seven described species, only two of which occur in Chile (Clarke 1965, Heppner 1984, Vargas 2018)

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Summary

Background

The largest number of species of the widespread and highly diverse micromoth genus Ypsolopha Latreille, 1796 (Lepidoptera, Yponomeutoidea, Ypsolophidae) is known from the Northern Hemisphere. Seven species have been described from the Neotropical Region, two of which occur in Chile. The adult stage of Ypsolopha chicoi sp. N. from the arid highlands of the western slopes of the Andes of northern Chile is described and illustrated. Its larvae feed on the native shrub Muehlenbeckia fruticulosa (Walp.) Standl. The morphology of the genitalia of Y. chicoi sp. Vargas H geographic area, Y. moltenii Vargas, 2018, whose larvae feed on Adesmia verrucosa Meyen (Fabaceae). Besides using different host plants, the two species can be accurately separated, based on morphological differences in female and male genitalia. Host plant, Muehlenbeckia fruticulosa, new species, Polygonaceae

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