384 Acarology 



apparent pathology in the host tissue at the site of infection." In re- 

 viewing the Hterature Spurlock and Emlen state the following on 

 Falciilijer rostratiis (Buchhoiz): "The normal nymph molts into the 

 hypopial stage during adverse environmental conditions, as during the 

 molting of birds, etc. The hypopial forms migrate internally through 

 the feather follicles or respiratory organs of the bird host and come to 

 lie in subcutaneous or tracheal tissue, there to live and grow until such 

 times as external conditions become normal when they return to the 

 outside and take on their original form. This deviation of the normal 

 life cycle is supposed by these authors (i.e., Robin and Megnin) to 

 be a means of saving the colony from destruction." 



PteroUchus obtiisus Robin occurs on several species. of birds such 

 as fowl and French partridge. P. bicaudatus Gervais is to be found on 

 ostriches in South Africa and California. Dermoglyphus elongatus 

 Megnin and D. minor Norner are to be found inside the quills of fowls. 



References: 



Oudemans, A. C. 1922. Ueber die metamorphose der vogelbewohnenden 



Acaridiae. Tijdschr. v. Ent. 65:184-191. 

 Spurlock, G. M., and J. T. Emlen. 1942. Hypodectes chapini n. sp. (Aca- 



rina) from the red-shafted flicker. J. Parasitol. 28(4) :341-344. 

 Vitzthum, H. 1933. Die endoparasitische Deutonymphe von PteroUchus 



nisi. Zeitschrift f. Parasitenkunde 6(2) : 151-169. 



Proctophyllodidae Megnin and Trouessart, 1883 



Figures 310, 311 



Diagnosis: The proctophyllodids are feather mites. Both sexes have 

 dorsal and dorso-lateral propodosomal shields, a hysterosomal shield, 

 and several other small shields. The rear of the female body is taper- 

 ing, bilobate, and has sword-shaped or bristle-like appendages on each 

 lobe. The posterior margin of the male is often bilobate, too, and often 

 has leaf-shaped appendages. No vertical setae appear on the propo- 

 dosoma. Rodlike, distally blunt tactile setae are found on tibiae i and 

 II, All tarsi have caruncles. 



Genera: 



1. Proctophyllodes Robin, 1868 



Type. Dermaleichus glandarinus Koch, 1840 



2. Alloptes G. Canestrini, 1879 



Type. Dermaleichus crassipes Canestrini, 1878 



