|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!!)
Since the above was written, I failed to trap specimens from the shower and sink drains. Ashley suggested the grout around the shower. The tree farm house here is "rustic", a polite way to say poorly built with the bathroom partially below ground level and always damp. I suspect there are tiny little signs in the foundation cracks outside that say, For a good time big boy, come on in here. Free food and fermented beverages!