374 



Acarology 



Dermatophagoides Bogdanow, 1864 (= Pachylichus G. Canestrini, 



1894 = Mealia Berlese, 1897) 

 Type. Dermatophagoides scheremetewskyi Bogdanow, 1864 

 Microlichus Trouessart and Neumann, 1887 

 Type. Symbiotes avus Trouessart and Neumann, 1887 

 Rivoltasia G. Canestrini, 1894 

 Type. Epidennoptes hijurcatiis Rivolta, 1 876 

 Turbinoptes Boyd, 1949 

 Type. Turbinoptes strandtinanni Boyd, 1949 



Figure 303 Dermatophagoides scliere- 

 metewskyi Bogdanow. Dorsum of fe- 

 male. 



Figure 304 Dermatophagoides schere- 

 metewskyi Bogdanow. Venter of fe- 

 male. 



Discussion: These mites are usually to be found on the skin of birds. 

 Epidennoptes bilobatus Rivolta lives on the skin of chicken and has 

 been found in great numbers associated with pityriasis (scaly skin dis- 

 ease) in some cases and has been accused of being the cause of the 

 disease. Dermatophagoides scheremetewskyi Bogdanow 1864 was de- 

 scribed from mites causing dermatitis in man. Traver 1951 reports 

 on D. scheremetewskyi infesting the human scalp for a period of six- 

 teen years. The first symptoms were small itching red papules accom- 

 panied by the sensation of something crawling and scratching. The 

 epidermis over the infested areas thickened and these regions became 



