A Case of Urogenital Myiasis Caused by a Species of Megaselia (Diptera: Phoridae)

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Abstract
On 23 September 1976 a 5-year-old girl was admitted to a hospital in Tokyo suffering from an abdominal contusion. The following day she excreted some fly larvae in her urine. The urine sample was collected in a standard receptacle, using routine precautions to avoid secondary contamination. Within an hour of collection the sample was examined and mature larvae were observed in the urine. Two larvae were recovered for examination. A sketch made from a living larva is given in FIG. 1. The notable features of this larva are the elongation of the tubercles bearing the posterior spiracles and the very conspicuous posterior balloonlike structures, which are presumably anal gills of some sort. These were very evident when the larvae were in urine but were apparently retracted when the larvae were transferred to water. The larvae appeared to be ingesting sediment material when in the urine in the laboratory.

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