1. What species concept should be used in this case?
2. Are apple maggot flies distinct as a species from hawthorn maggot flies?
3. Propose a biologically reasonable scenario that explains how apple maggot flies evolved.
4. How did you weigh the different pieces of evidence to reach a conclusion to questions (2) and What evidence was most important, what was least important, etc.?
5. What further information would you need to increase your confidence in the conclusions you reached?