Lesser Pumpkin Fly

Best I've found https://youtu.be/3ugUw6Vl4EI stages for trapping and wrapping fruit.

You can make a trap here to reduce male flies to reduce fertilisation and laying in fruits. http://ipm.ait.asia/?page_id=76

Greetings!!! Been doing some reading on them and there are two common mechanical methods of control. One is to use a protective covering to wrap the fruit while it develops. The other is to use baited traps. The latter is less cost effective. Here is a copy of how they control on the island of Mauritius off our coast. http://agriculture.govmu.org/English/Documents/Entomology/Melon%20Fruit%20Control.pdf Always remove stung of attacked fruit in sealed bags to stop new generation hatching. I hope this helps or at least points you in a direction.

Greetings!! We had a few of these in our gardens here in South Africa. They attack various Cucurbits like pumpkins, watermelons, gourds and gem squash. The Pierce young fruits to lay eggs. hope this helps!!