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Dear All,

We are developing an agricultural Project in Southern Africa for asparagus (asparagus officinalis), and there is a type of fly that is causing a severe damage on the crop. The fly lays its eggs on the shoot of the plant, the larves follow the shoot and end up eating the crown (plant brain) and the "eyes", where the new asparagus shoot will come.

Is there someone that could please help to identify this species?

Also, if someone may indicate any type of control method (chemical or biological) on the larves and puppae that are in the soil, it would help a lot.

It is first time that we see something like that... But well, new places, new enemies and adventures....

I attach hereby some pictures of the adult + larves + puppae. Let´s see if someone is able to identify it. I thank you very much for your invaluable help!