The flies are all members of the phroid family.
There were captured in the 30 insect traps set by the home owners in their backyards.
Phroid flies are smaller than the fruit flies which hover over bananas.
Brown, curator of entomology at the museum and a phorid fly expert said, “Most people don’t even notice them, but they do an incredible array of different things that are important to helping our ecosystem function. Really, the world couldn’t function without these small creatures. People are healthier when they are surrounded by biodiversity. Making the city more conducive to biodiversity is going to make it a better place for everyone to live.”
Some of them prey on fungi, and others on insect pests and other eat decaying matter.
“Really, the world couldn’t function without these small creatures,” Brown said.
The discovery of the 30 flies was through a collaboration between the Museum of Natural History of Los Angeles and citizen scientists around the city called BioScan (Biodiveristy Science: City and Nature).
BioScan project is a three year investigation of insect biodiversity in Los Angeles.