Mountelgonia arcifera is a moth of the family Metarbelidae. It is found in southern Kenya and north-central Tanzania. The habitat consists of open grasslands with shrubs and/or trees at medium to high elevations.
The wingspan is about 24 mm for males and 26.5 mm for females.Lehmann, 2013. Description of two new genera and ten new species of Metarbelidae (Lepidoptera: Cossoidea) from western, north-central and eastern Africa with notes on habitats and biogeography.
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