Cosmopterix orichalcea
Cosmopterix orichalcea is a moth of the family Cosmopterigidae. It is known from most of Europe (except the Balkan Peninsula) east to Japan.

The wingspan is about 9 mm.
The antennae with apex and two subapical rings white. Forewings black ; a large brassy-metallic basal patch, edge very oblique ; a broad orange fascia beyond middle, narrowed dorsally, edged with black scales and then with narrow violet-golden-metallic fasciae ; a bluish-silvery-metallic sometimes interrupted streak along upper.The larva is pale yellow ; dorsal line greenish ; head
black plate of 2 black,bisected. 

Adults are on wing from August to May. Then the larva hibernates outside of the mine in a hibernaculum.

The larvae feed on "Anthoxanthum odoratum", "Festuca arundinacea", "Hierochloe odorata", "Milium" species, "Phalaris arundinacea" and "Phragmites australis". They mine the leaves of their host plant. They prefer the lower leaves. The mine has the form of an elongate, rather irregular blotch. Most frass is ejected, but the remaining frass is concentrated in a few heaps. A single larva makes several mines. Pupation takes place outside the mine.
Q1725788
moth
Concept
Q134107
Cosmopterigidae
Concept
Q23522
Balkan Peninsula
LOC
Q17
Japan
LOC
Q245097
wingspan
Concept
Q960043
hibernaculum
Concept
Q157751
Anthoxanthum odoratum
Concept
Q157922
Festuca arundinacea
Concept
Q161162
Hierochloe odorata
Concept
Q164783
Milium
Concept
Q157419
Phalaris arundinacea
Concept
Q28557
Phragmites australis
Concept
Q1544843
mine
Concept
Q2098762
frass
UNK
Q291530
Cosmopterix orichalcea
Concept
+9^^http://www.w3.org/2001/XMLSchema#decimal
9
NUMBER
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
host
host
host
host
host