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 pentasticta is a moth of the family Blastobasidae. It is found in Australia, including New South Wales.
Blastobasis phaeopasta is a moth of the family Blastobasidae. It is found in Australia, including northern Queensland. It was first described in 1947 by Alfred Jefferis Turner, and the species epithet, phaeopasta, describes it as being "darkly sprinkled".
Blastobasis yuccaecolella is a moth in the family Blastobasidae. It is found in the United States, including Pennsylvania.
Blastobasis paludis is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis furtivus is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis graminea is a moth in the family Blastobasidae. It is found in Colombia, Venezuela, Costa Rica, Mexico and the south-eastern United States.
Blastobasis orithyia is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis babae is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis usurae is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis litis is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis chanes is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis fax is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis coffeaella is a moth in the family Blastobasidae. It is found in Costa Rica and São Paulo, Brazil.
Blastobasis lex is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis manto 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 beo is a moth in the family Blastobasidae. It is found in Costa Rica.
Blastobasis quaintancella is a moth in the family Blastobasidae. It is found in the eastern United States, including Maine and Florida.
