Blastobasis is the type genus of the gelechioid moth family Blastobasidae; in some arrangements these are placed in the case-bearer family (Coleophoridae) as a subfamily. Within the Blastobasidae, the subfamily Blastobasinae has been established to distinguish the Blastobasis lineage from the group around Holcocera, but the delimitation is not yet well-resolved.
Blastobasis paludis is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis balucis is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis rotullae is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis deliciolarum is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis dicionis is a moth in the family Blastobasidae. It is found in Costa Rica. Its forewings are 5–7 mm long and are brownish-grey intermixed with brownish-grey scales tipped with pale brownish-grey and pale brownish-grey scales. The hindwings are translucent pale brown, gradually darkening towards the apex.
Blastobasis kenya is a moth in the family Blastobasidae. It is found in Kenya. The habitat consists of coastal lowlands, eastern middle elevations, and the western highlands.
Blastobasis acirfa is a moth in the family Blastobasidae. It is found in Kenya. The habitat consists of coastal lowlands and the western highlands.
Blastobasis glauconotata is a moth in the family Blastobasidae. It is found in Kenya, where it is known from the central and western highlands and in the central mid-altitudes of the Ngaia Forest.
Blastobasis chuka is a moth in the family Blastobasidae. It is found in Kenya, where it is known from the south-eastern coast and the central highlands.
Blastobasis elgonae is a moth in the family Blastobasidae. It is found in Kenya, where it is known from Mount Elgon in the western highlands.
Blastobasis indigesta is a moth in the family Blastobasidae. It is found in Zimbabwe.
Blastobasis divisus is a moth in the family Blastobasidae. It is found on Madeira.
Blastobasis exclusa is a moth in the family Blastobasidae. It is found on the Canary Islands.
Blastobasis helleri is a moth in the family Blastobasidae. It is found on the Canary Islands.
Blastobasis marmorosella is a moth in the family Blastobasidae. It is found on the Canary Islands, Madeira and in Portugal and Spain. This species has been accidentally introduced to Australia and New Zealand.
Blastobasis tridigitella is a moth in the family Blastobasidae. It is found in Thailand.
Blastobasis basipectenella is a moth in the family Blastobasidae. It is found in Thailand.
Blastobasis ianella is a moth in the family Blastobasidae. It is found in Thailand.
Blastobasis christou is a moth in the family Blastobasidae that is endemic to New Caledonia.
