The bugs in the toilet are small and white.

This is the larvae of the moth.

Éměng Psychodidae is a class of insects of the class Insecta Diptera Diptera Nematocera Psychodidae.

Moths are small to small hairy or scaly insects of the suborder longhorned, including blood-sucking sandflies and indoor common moths and other important health pests, with small and slightly flattened heads, compound eyes far from left and right, and no single eye; antennae long, about equal or longer than cephalothorax, composed of 12 or 16 segments, whorls of hairs; The lower jaw of the mouthparts is long and curved, 4 or 5 segments, the beak is short and the blood-sucking ones are long. thorax thick and dorsal protrusion, small shields rounded; The feet are short or elongated, and the tibia is not end-distanced. The base of the wings is narrow and the ends are pointed or rounded, often fusiform; The wing margins and veins are densely hairy, a few have scales, the longitudinal veins of the ulnar veins are numerous and distinct, at least 9 extend to the wing margins, the transverse veins are few only at the base of the wings, and the basal chamber is short; Sc is mostly short or incomplete, R is divided into 4 or 5 bars, M is divided into 3 or 4 bars, Cu is only 1 bar, A is very short or degraded.

The abdomen is cylindrical, 6 or 8 segments, the male external genitalia are well developed and exposed, and the female ovipositor is prominent. Commonly known as fluttering moths.

This is the larvae of the moth midge, which inhabits the crevices of sewers or floor tiles and is harmless to humans.