Where Found
for Drain Fly
Indoors, adults rest on bathroom, kitchen, and basement walls and hover over sinks, tubs, and floor drains after dark. The larvae live in the slimy biofilm coating drains, overflow pipes, septic lines, and standing water around debris. Source: https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/ENTO/ENTO-414/ENTO-414.pdf Source: https://extensionentomology.tamu.edu/wp-content/uploads/2017/09/Drain-Flies-Publ.-E-184.pdf Outdoors they use similar wet, organic spots and rank among the most common insects at sewage treatment plants. Source: https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/ENTO/ENTO-414/ENTO-414.pdf