Field guide · Denmark
Brush-footed butterflies · Denmark

False heath fritillary

Melitaea diamina

False heath fritillary is rare in Denmark. Wingspan: 35-40 mm. Flight time occurs in June-July, potentially beginning from the very last days of May. False heath fritillary is found in damp clearings, and woodland meadows, where the species' host plant occurs.

Status in this countryRare in DenmarkVU (Vulnerable)
False heath fritillary

Flight period

The flight period occurs in June-July, starting from the very last days of May. The larvae can be found overwintering from July to the end of May.

Habitat

False heath fritillary flies in damp, wooded clearings and woodland meadows, where the species' host plant is found.

Identifying features

Wingspan: 35–40 mm. The wing uppersides are dark brown with small orange, fairly square spots.

Similar species

False heath fritillary can easily be confused with Glanville fritillary, heath fritillary and, to some extent, marsh fritillary. Glanville fritillary has spots in the outer field of the hindwings, in the second row of orange patches from the edge, which false heath fritillary lacks. Its wing uppersides are also lighter and more ochre-orange, whereas those of false heath fritillary are darker and more brownish.

Distribution

When the last Danish false heath fritillaries were seen in 1982 at Farum Sortemose and near Bastrup Sø, the species had already been in extreme decline for 15 years. Even in the mid-60s it could still be found at several sites in northern, central and western Zealand and at its last two sites on Funen, near Bramstrup and at Højes.

Biology

The flight of false heath fritillary is rapid, low, and hovering. When the species is not foraging for nectar, it readily basks in the sun.