''Udea montanalis'' is a

moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...

in the family

Crambidae Crambidae comprises the grass moth family of lepidopterans. They are variable in appearance, with the nominal subfamily Crambinae (grass moths) taking up closely folded postures on grass stems where they are inconspicuous, while other subfamilies ...

. It was described by Schaus in 1912. It is found in

Costa Rica Costa Rica, officially the Republic of Costa Rica, is a country in Central America. It borders Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, and the Pacific Ocean to the southwest, as well as Maritime bo ...

. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...

is about 21 mm. The forewings are brown, with darker irrorations and a round whitish dark-edged spot in the middle of the cell and a curved whitish line on the discocellular, more broadly edged with dark brown. There is a small black postmedial spot on the costa. The hindwings are white with a brownish line terminal, somewhat interrupted by the veins.New species of Heterocera from Costa Rica. XIV

References

montanalis Moths described in 1912 {{Udea-stub