Biosteres is a genus of wasps belonging to the family Braconidae.

The genus was first described by Förster in 1862.

The genus has almost cosmopolitan distribution.

Species: Biosteres arenarius (Stelfox, 1959) - also known as Opius arenarius in Ireland, found in France, Germany, Turkey, and Iran Biosteres blandus (Haliday, 1837) - also known as Opius blandus, hosts include Pegomya and Agromyza Biosteres brevipalpis (Thomson, 1895) Biosteres carbonarius Nees, 1834 Biosteres haemorrhoeus (Haliday, 1837) - hosts are of the genus Pegomya, including P. bicolor Biosteres longicauda (Thomson, 1895) Biosteres spinaciae (Thomson, 1895) Biosteres tryoni (Cameron, 1911) - parasitoid of Ceratitis capitata Biosteres wesmaelii Haliday, 1837 Biosteres vandenboschi References