Prodiplosis violicola (Coquillet, 1900)
leaves crowded, often disfigured and rumpled, the outer leaves glabrous as usual, the inner ones weakly pubescent. Young larve yellowish red, full grown red, able to make weak jumps.
Viola arvensis, cornuta, tricolor.
Originally a North American species.
Buhr (1965a), Gagné & Jaschhof (2014a), Roskam (2009a), Roskam & Carbonnelle (2015a).