|Bathroom Fly - Clogmia albipunctata - REK|
|Side view - REK|
|C. albipunctata on the wall - REK|
|C. albipunctata larvae - Ashley Bradford|
|C. albipunctata pupa - Ashley Bradford|
Until we came along, C. albipunctata probably lived in moist decaying plant and animal matter. Societies have brought garbage collections, water containers like rain barrels and fire pits, air conditioners and cooling towers and clogged roof drain pipes. Better yet are all the kitchen and bathroom drains with traps that can hold the gelatinous egg masses. These are resistant to flushing, hot water, soap and many drain disinfectants and cleaners.
On hatching the larvae feed on algae, bacteria, fungi, microorganisms, and are a welcome addition to wastewater treatment plants. The cycle from egg to adult is 7 to 28 days with more of the gory details here. Ashley Bradford has a great series of their life cycle at this Bugguide link and Duke.edu has good closeups of the adult.
Wikipedia has good suggestions for control of our population. Our source is likely the shower drain and I will collect specimens with a clear glass jar inverted over it. It will be getting special attention, once I have been able to collect larvae and possibly eggs to raise. (Editor's note - "GROAN!!)
Recently we returned from a week absence and saw tiny specks around the edge of the water in the toilet bowl. In the spirit of a naturalists I collected some of these and "Viola", Bathroom Fly pupae. You can see them in motion in this video.