''Planctogystia parvulus'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of ...

of the family

Cossidae The Cossidae, the cossid millers or carpenter millers, make up a family of mostly large miller moths. This family contains over 110 genera with almost 700 known species, and many more species await description. Carpenter millers are nocturnal ...

. It is found in

Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...

. This is a large, heavy moth with a

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

of 40 to 64 mm. The frontwings are whitish, covered with cossid reticulations, including a fairly marked median line. On the costa there are 5 black spots. The hindwings are uniformly dark grey.Kenrick, 1914a. ''New or little known Heterocera from Madagascar''. - Transactions of the entomological Society of London 1913(4):p.588, pls. 31–32

References

Cossinae Moths described in 1914 Moths of Madagascar Moths of Africa {{Cossinae-stub