Synopsia sociaria

Synopsia sociaria, sometimes also called sand grass brown strip clamps or heather brown strip tensioner, is a butterfly (moth ) from the family of the tensioner ( Geometridae ).

  • 5.1 Notes and references
  • 5.2 Literature



The wingspan is about 28 to 34 millimeters. On the Wings prevail light gray and brownish tints. A dark brown colored strip adjoins the curved, black colored inner transverse line. The sometimes double -scale, black-colored outer transverse line shows near the front edge, a distinctive and species-typical spiky bulge. The outer transverse line is continued on the hind wings. The antennae of the males are combed on both sides, those of the females are slightly notched.


The egg is oval in shape and is provided with numerous scratches. It initially has a yellow color that turns into dark violet-red later.


Adults caterpillars have a gray -brown color. Characteristic are two short after tips. Ridge lines and side stripes are usually indistinct. The dark spot warts stand out more clearly.


The doll is stretched, dyed black brown, showing bright segment incisions and has a conical cremaster, sitting at the end of two small hook-shaped bristles.

Similar Species

Synopsia sociaria resembles many beef tensioner species, especially the ring stain beef tensioner ( Cleora cinctaria ), but differs in particular by the sharper jagged course of the outer transverse line.

Geographical distribution and occurrence

The distribution area of Synopsia sociaria extends through the central southern Europe to western Central Asia. In the north, the occurrence of the North Sea coast on the Baltic to Russia is patchy. In the Caucasus, ssp lives. S. sociaria unitaria. In the Alps, the nature rises to a height of 1500 meters. It inhabits preferred heaths, dry slopes and sandy lawns.

Way of life

The moths are nocturnal and fly in southern regions in two generations going from late March to early June and early July to early October. North of the Alps flying only a generation that appears in July and August. Visit sometimes artificial light sources. The caterpillars live on various plants, for example, on broom ( Genista ), mugwort (Artemisia ) and Echium species ( Echium ), as well as heathers (Erica ). They overwinter. Pupation takes place on the ground among moss.


The species is in the German states as locally extinct, and accordingly performed on the Red List of endangered species in Category 0. In the 20th century it was in the Lüneburg Heath locally not rare and was detected locally in Lusatia and the Mark Brandenburg. Information about discoveries in Baden- Württemberg are obviously based on misidentifications.