Pseudonapomyza dilatata Sasakawa, 1963
Resembles Pseudonapomyza asiatica but can be readily identified by the characteristic male genitalia.
IMPORTANT CHARACTERS
Adults
Wing length: 1.3 - 1.6 mm. Mesonotum covered with fine bluish pubescence. Three or four dorsocentral bristles present. The first one of the four is only slightly larger than acrostichal hairs.
Immature stages
Puparium: As in Spencer, 1973, posterior spiracles with 4-5 bulbs; two subspiracular processes are located close together in central position of the last segment. Segmental spines are weakly developed.
BIONOMICS
Grass leaf miner.
HOST PLANTS
Known from Zea mays L. (maize), Saccharum officinarum L. (sugar cane), Coix lachryma-jobi L. (Job's tears), also Cynodon dactylon Pers. (Bermuda grass), Eleusine indica (L.) Gaertn., Miscanthus sp. and probably other wild grasses.
DISTRIBUTION
Apparently restricted to Fiji and Samoa.
ECONOMIC IMPORTANCE
No current case of damage caused by Pseudonapomyza dilatata known.