14ISCELLANE0U3: In Egypt, the pigeon argas is infected with 

 one or more viruses distinct from West Nile but otherwise uniden- 

 tified. 



REMARKS 



Egypt is the only territory on continental Africa where the 

 pigeon tick is known to be of some economic importance. The re- 

 view of this species for the present work has not been as inten- 

 sive as for most other species. 



The temperature preferences of unfed and engorged pigeon argas 

 have been described by Herter (19A2). 



The anatomy has been described by Pagenstecher (l862). 



According to Zuelzer (1921 ), A. persicus and A. reflexus mate 

 and produce fertile offspring. We'~have unsuccessfully attempted 

 to duplicate this phenomenon in our Cairo laboratories. 



With reference to remarks on coxal fl\iid by Remy (1921,19226), 

 see 0. iTX)ubata section, page 173. See also Lavoipierre and Riek 

 (1953;. 



Senevet (1920A) disciossed the relationship of the size of the 

 pads of the first pair of legs in larvae in relation to overall 

 body size. 



Schiilze (19A-3B} figured the midgut, as A. co lumbar urn , to il- 

 lustrate his observation that in the argasids, and particularly in 

 this species and in bat- parasitizing species, there is little basal 

 branching of the diverticula but considerable distal branching, 



Schulze (1941) also noted and illustrated the haller's organ 

 of each stage of the pigeon argas. K. W. Neumann (19^2), a student 

 of Schulze, discussed the morphology aiid function of the dorsal 

 plate of the larva, also vmder the name A. columbaruji . 



There is some chance that the name A. reflexus refers to a 

 European parasite of wild birds and the correct name of the pigeon 

 parasite should be A. columbae (Hermann, 180U) (cf . DuBuysson 192^.). 



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