Soil mites in wheat fields were surveyed in
Qualubia Governorate, Egypt, during the season
1993. The encountered mites was belonging to five
systematic groups.These are:Cryptostigmata,
Prostigmata, Mesostigmata, Asti gmata and
Heterostigmata.The density of soil acari reached
the maxima in March and May with average of 105
and 222 individuals/bOO cc soil respectively.
Cryptostigmata not only occurred in great
abundace but also dominated other acari groups in
number since it contributed 33.9% of all numbers
of acari, while Prostigmata constituted 31.9%,
Mesostigmata (13.2%), Astigmata (11.2%) and
Heterostigrnata (9. 7g).
Statistical analysis shows that highly
significant differences existing between months
and no significant differences between acari
groups under study. The population density of