Japanagromyza inaequalis (Malloch, 1914)
This species generally resembles Japanagromyza aequalis, both species occur on the same host plant. For reliable identification the dissection of the male genitalia is necessary.
IMPORTANT CHARACTERS
Adults
Wing length: 2 - 2.4 mm. The upper frontorbital bristle shorter than the next bristle below. First tibia with 1, second tibia with 2 posteromedian spines. The spines are rather thin.
Male terminalia
Cerci, surstyli and ejaculatory apodeme similar to Japanagromyza desmodivora. Aedeagus very long and coiled with a long bifid terminal part. Appendices of basiphallus extending to both dorsal and ventral sides of the aedeagus.
Immature stages
Puparium dark brown. Posterior spiracles with three bulbs each (Spencer and Steyskal, 1986).
BIONOMICS
The larva produces a blotch mine on one leaflet.
HOST PLANTS
Vigna luteola (= repens), probably also other Vigna species.
DISTRIBUTION
Dominican Republic, Guadeloupe, Puerto Rico, USA (Florida).
ECONOMIC IMPORTANCE
Spencer, 1973 considered the species as "capable of causing substantial damage to Vigna as a fodder crop". However, so far no cases are reported.