Zaprionus indianus is unusual among Drosophilidae species in being a serious, primary pest of at least one commercial fruit, figs in Brazil.
[7] The leaf mining Scaptomyza flava, which is nested in the genus Drosophila phylogenetically, is an obligate leaf miner of mustard plants, including the model plant Arabidopsis thaliana[5] and is a major pest of salad brassicas in New Zealand and an emerging pest of canola in the UK.
Fruit flies in general are considered as a common vector in propagating acetic acid bacteria[9] in nature.
There are sinking traps available on the market for this nuisance, but one quick way to strongly limit the extent of it is to vacuum clean the flies both at rest and in their slow flight.
More extensive identification characteristics can be found in "Drosophila: A Guide to Species Identification and Use" by Therese A. Markow and Patrick O'Grady, (Academic Press, 2005) ISBN 0-12-473052-3 or "Drosophila: A Laboratory Handbook" by M. Ashburner, K. Golic, S. Hawley, (Cold Spring Harbor Laboratory Press, 2005).