Blastobasis Zeller, 1855

Blastobasis Zeller, 1855: 171 . Type species: Oecophora (Scythris) phycidella Zeller, 1839 .

Epistetus Walsingham, 1894: 552 . Type species: Epistetus divisus Walsingham, 1894 .

Valentinia Walsingham, 1907: 200 . Type species: Gelechia glandulella Riley, 1871 .

Zenodochium Walsingham, 1908: 52 . Type species: Zenodochium monopetali Walsingham, 1908 .

Prosthesis Walsingham, 1908: 953 . Type species: Prosthesis exclusa Walsingham, 1908 .

Blastorasis Dietz, 1910: 69. Misspelling.

Euresia Dietz, 1910: 20 . Type species: Euresia pulebella [sic] Dietz, 1910.

Diagnosis. Blastobasis is similar to Hypatopa Walsingham, 1907 in the male genitalia, but it can be separated from the latter by the male antenna with a notch in the first flagellomere, the gnathos with one or two denticles medially on the posterior margin, and the proximal flange not bulged in the male genitalia. In Hypatopa the first flagellomere of the antenna is not notched in male, the gnathos is smooth or notched medially on the posterior margin, and the proximal flange is bulged.

Notes. The ten species from Mainland China are similar to the type species B. phycidella (Zeller, 1839) in hindwing venation with M 2 and M 3 coincident (Fig. 3), while the two veins are stalked in the most species from the Nearctic and Neotropical regions.