Prochoreutis myllerana

Illustration from John Curtis's British Entomology Volume 6

Mounted specimen

This species can be found in most of Europe, east into Russia. It is also known from China (Heilongjiang, Xinjiang), Korea and Japan (Hokkaido). [1][3]

The wingspan of Prochoreutis myllerana can reach 10–14 mm. [4] Forewings are variegated brown, with a dark brown median fascia showing white dusting. These moths are characterized by 2 + 2 white dots on the upper part of the wings, near the edge.

Prochoreutis myllerana is very similar to Prochoreutis sehestediana, [4] but in the latter the white dusting extends more than half way towards the costa of the forewings and the mentioned 2 + 2 white dots are missing. [4] The apex of P. sehestediana is more pointed. [5] Moreover in P. mullerana head of larvae is uniformly pale brown, contrary to Prochoreutis sehedestediana. [6]

Adults are on wing from May to early September.[4] There are probably three generations per year. [4] The monophagous larvae feed on Scutellaria galericulata and Scutellaria minor. [4] The young larvae mine the lower leaves of their host plant. Older larvae live free among spun leaves. There are also records on Lamium album and Lamium purpureum, [1] but these need confirmation. [6] Full grown larvae can be found in June and July – August. Probably these moths hibernate as adults. [6]

• Lepiforum.de (in German)
• Naturhistoriska risksmuseet (in Swedish)
• Prochoreutis myllerana - Biodiversity Heritage Library – Bibliography