Diptera larvae fly worm in microscope translucent mushroom fungus gnat

gnat macro fly fungus diptera pest larva uninfected damage habitat pathology objects dead larvae anisopliae entomopathogenic beauveria bassiana fungi pathogen biological wildlife metarhizium management microorganism affected microbial insects pathogenic white eyed nature wings slender fast nymph leaf small caucasus animal hairy mushroom fly brown housefly ugly buzzer vital microscope translucent