Pseudonapomyza asiatica Spencer, 1961
The species can be distinguished from the partly sympatric species Pseudonapomyza spicata and Pseudonapomyza spinosa by the more obtuse angle of the third antennal segment (Spencer, 1973).
IMPORTANT CHARACTERS
Adults
Wing length: 1.3 - 1.75.
Immature stages
Puparium 1.6 x 0.75 mm, mat, dark brown. Segments without setae or spines.
BIONOMICS
The whitish mine is mainly located at the apex of young leaves. The pupariation takes place within the mine where the puparium is firmly glued in (Barrion and Litsinger, 1979).
HOST PLANTS
Zea mays L. (maize), Oryza sativa (rice), also Cynodon dactylon (L.) Pers., Eragrostis sp.
DISTRIBUTION
Singapore, Formosa, Philippine Is., India, Ethiopia, South Africa, Cape Verde Is.
ECONOMIC IMPORTANCE
Ps. asiatica appears to be common on rice plants but apparently causes not very much damage.