The
wingspan is 15–23 mm. At first sight it is somewhat similar to
Melitaea didyma but the black lunules before the margin united and the disc traversed by a strongly flexuose macular band, the hindwing with abundant, connected, black markings on the disc. The female with the ground-colour centrally more or less pale, especially on the forewing. (MHNT) Melitaea trivia - Slovaquie - male dorsal.jpg|
Melitaea trivia ♂ (MHNT) Melitaea trivia - Slovaquie - male ventral.jpg|
Melitaea trivia ♂ △ (MHNT) Melitaea trivia - Slovaquie - female dorsal.jpg|
Melitaea trivia ♀ (MHNT) Melitaea trivia - Slovaquie - female ventral.jpg|
Melitaea trivia ♀ △ The larva of
trivia is leaden grey, with bluish dots and dark dorsal stripe, the sides being striated with brownish, the soft spines whitish, the prolegs dotted with black. The pupa is very stout, anteriorly somewhat swollen, pearl-grey or dull whitish yellow, with small black dots, of which those on the wing-cases do not correspond to the spots of the wings. Some of the black spots, especially those on the abdomen, are ornamented with red or yellow. == Biology ==