First published records of Catoptria acutangulellus (HerrichSchäffer, 1847) (Lepidoptera: Crambidae) in Croatia after almost a century

The montane species Catoptria acutangulellus (Herrich-Schäffer, 1847) was reconfirmed from Croatia on Mt Biokovo after almost 100 years. Previous historical records were published in 1850 from Mt Biokovo and 1896 from the area around Rijeka. There are no recently published records of this species, whether from Mt Biokovo or any other Croatian mountain. Therefore, these new records also represent the first findings of this species for Mt Biokovo in more than 140 years. Habitat loss or habitat change due to global warming could be a threat to montane species such as C. acutangulellus. Since the only known localities of C. acutangulellus in Croatia are the highest parts of Mt Biokovo, in the future it could be a threatened species in the country.