Satyrium w-album

English name:
White-letter Hairstreak
Full scientific name:
Satyrium w-album (Knoch, 1782)
Croatian name:
Brijestov repić

Red Book Category in EU: LC

Red Book Category in Croatia: NE

Wings span: 26-30 mm

Satyrium w-album, Velebit, 0722L3174
Satyrium w-album, Velebit, 0722L3174
Satyrium w-album, Velebit, 0722L3349
Satyrium w-album, Velebit, 0722L3349

Flight Period and Life Cycle

Flight period of Satyrium w-album in Croatia
Flight period of Satyrium w-album in Croatia

1 brood per year. Overwinters as egg or small caterpillar.

Distribution in Croatia

Distribution of Satyrium w-album in Croatia
Distribution of Satyrium w-album in Croatia

Entire territory excluding far south and islands. Check the included map.

External Morphology Characteristics

There is a dark tail on the hindwing. The upper side of both wings is brown in color. On the hindwing’s postdiscal zone there is a series of white markings. On the underside of the hindwing, the white markings have the distinctive shape of the letter W. The orange spots on the hindwing’s S1-S4 zones are almost merged. Additionally, there is a small bluish dark spot in the S1 zone.

The distinctive characteristics of lateral view with closed wings of S. spini, S. acaciae, S. ilicis, S. w-album and S. pruni are here.

Behavior

When not flying it keeps its wings closed. It often feeds on the nectar of shrub flowers.

Caterpillar Host Plants

Family Ulmaceae.

Habitat

Bushes at the edges of woodlands. Elevations: 0-1000m

Gallery

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