Biosteres

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