Field  study  was carried  out on the  predaceous  mite, Hemisarcoptes  coccophagus  Meyer and the  phytophagous  mite, Phyllotetranychus  aegyptiacus  Sayed  associated  with the  diaspidid,  Fiorinia  phoenicis  Balachowsky infesting  two varieties  (Semany  and  Zaghtol) of date  palm  trees  at Giza governorate during  the  period  from  mid April 2012 to  mid May  20l3.Population  of  F. phoenicls  was noted  all over  the  year  being low  from 1^st  November.  Its population was recorded on Semany  arrd Zaglol  variety averaging  67.0  and  76.3 individuals/sq.  inch  showing  highly  significant difference  as  Zaghlol was favor  for  the  prey. Population  of nymphs  and adults  of  H. coccophagus, was  noted  in  large numbers  from  mid April  to  1^st August.  Its  means all over  the  period  of  study  was 10.3  and  11 .8  individuals/sq.  inch  on Semany  arrd  Zaghlol  with significant difference  between  records  of the  two  varieties  showing  Zaghlol  to  be favor  for the  predaceous mite associated  with its  prey,  F.  phoenicis.  The  highest population  of nymhs  and  adults  of P. aegyptiacus  was  recorded  in  mid December;  no individuals  were  recorded  during the  period  from  July to  mid November. Means  of  P. aegtptiacus  nymphs and adults  on Semany  ard Zaghlol  werc 2.7 and  5.1 individuals/ sq. inch showing  Zaghlol to  be favored  for  the  phytophagus  mite.