With federal support for on-campus R&D dwindling as a percentage of GDP, keeping basic research afloat is a challenge. Schools and researchers are left to try to fill in the funding gaps.
Many people are left floundering when they try to get working on their PhDs. In Africa, this is often because the skills they need haven't been developed earlier in their academic careers.
Until more is understood, it's sensible to limit experimentation that would make changes to germ line cells that would be passed on to future generations.
These insects are so much more than just the scourge of fruit bowls everywhere. They're a key model system for all kinds of research that teaches us about our own brain and body systems.