Dipterous Larvm 



I3S 



Larva of Piophila casei. 

 Posterior stigmata. 



Caudal aspect of larva. 



In one of these cases upwards of 1200 larvs and several perfect 

 insects were said to have been passed per anum. French (1905) 



reports the case of a man 

 i-ft. "^ who for a considerable period 



voided adtdt living beetles 

 of the species Nitidula 

 bipustulata. Most of the 

 other cases on record relate 

 to the larvffi of Dermestidcs 

 (larder beetles et al.) or 

 TenebrionidcB (meal infesting species) . Infestation probably occurs 

 through eating raw or imperfectly cooked foods containing eggs or 

 minute larvse of these insects. 



Brutnpt cites a curious case of accidental parasitism by a coleopter- 

 ous larva belonging to the genus Necrohia. This larva was extracted 

 from a small tumor, several millimeters long, on the surface of the 

 conjunctiva of the eye. The larvas of this genus ordinarily live in 

 decomposing flesh and cadavers. 



Dipterous Labv^ 



Myasis — By this term (speUed also myiasis, and myiosis), is 

 meant parasitism by dipterous larvse. Such parasitism may be 

 normal, as in the cases already described under the heading parasitic 

 Diptera, or it may be factdtative, due to free-living larvae being 

 accidentally introduced 

 into wounds or the body- 

 cavities of man. Of this 

 latter type, there is a 

 multitude of cases on 

 record, relating to com- 

 paratively few species. 

 The literature of the sub- 

 ject, like that relating 

 to facultative parasitism 

 in general, is unsatis- 

 factory, for most of the 

 determinations of species 

 have been very loose. 



Indeed, so little has been known regarding the characteristics of 

 the larvEe concerned that in many instances they could not be exactly 



piophila casei. After Graham-Smith. 



