Calobata petronella explained

Calobata petronella is a species of fly in the family Micropezidae. It is found in the Palearctic.^{[1] [2]}

Notes and References

1. [Fauna Europaea]
2. Bei-Bienko, G.Y. & Steyskal, G.C. (1988) Keys to the Insects of the European Part of the USSR, Volume V: Diptera and Siphonaptera, Parts I,II. Amerind Publishing Co., New Delhi.