Straw-Barred Pearl (Pyrausta despicata) lives in dry grasslands across Europe and Asia. It feeds on grasses and sedges.
Fascinating facts about the Straw-Barred Pearl
- The straw-barred pearl is a very small moth, with a wingspan that only reaches between 14 and 19 millimetres. This modest size is typical for the species and is reflected in the narrow range given for adult wing measurements. Its forewings display brownish-grey or brown tones with variable pale markings, while the hindwings differ between sexes, being grey in males and blackish in females.
- The straw-barred pearl was first described by the naturalist Giovanni Antonio Scopoli in his 1763 work Entomologia Carniolica, giving the species its scientific name Pyrausta despicata and placing it within the family Crambidae. Since that early description, the moth has been recorded throughout most of Europe, confirming its wide distribution.
- Adult straw-barred pearls are on the wing from May through September, producing two distinct generations each year. The timing of their flight varies with location, but always falls within this May-September window, and the moth is active both in sunshine and at dusk. This seasonal activity coincides with the growth of its larval food plants, Plantago lanceolata and Plantago major, ensuring larvae have fresh foliage.
- The caterpillars of the straw-barred pearl feed on the common plantains Plantago lanceolata and Plantago major. The larvae are a dull brownish-black colour with a double grey dorsal line, spiracular ochreous markings and black spots edged in grey, giving them a cryptic appearance on the host leaves.
Sources
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At a glance
RangeEurope and Asia
HabitatDry grasslands
DietGrasses and sedges
About the Straw-Barred Pearl
In the warm, golden light of a summer's day, the Straw-Barred Pearl moth dances through the air, its delicate wings beating in a hypnotic rhythm as it flits from wildflower to wildflower. With a subtle beauty that belies its humble name, this tiny creature weaves a path through the tall grasses, its straw-colored bars glistening like miniature jewels as it searches for the sweet nectar that sustains it. As it moves, its very existence seems a fleeting whisper of elegance, a brief, shimmering moment of wonder in the vast and vibrant tapestry of the natural world.
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