الفهرس 
Sampling and extractionOnly 14 pages are availabe for public view
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Abstract
The Egyptian oribatid fauna has received scant a t t e n t i o n , especially from the taxonomical point of view ’ though the accumulation of taxonomic and ecological d a t a , among these important groups of mites; four major groups of d i f f e r e n t plantation were chosen as follows: I. Woodland cultivated with Eacalyptus t r e e s , Casuarina, Morus & Ficus Sycarnorus t r e e s . 11. Orchards cultivated with C i t r u s t r e e s , Mango, Datepalm and Ficuso 111. Arab1 land cultivated with Barsiurn, Maize and Cot ton. I V . Grassland. Sampling l o c a l i t i es from these four chosen areas were given i n (Table 1) and (Map 11, sampling tookplace during a period covered a whole year of i n v e s t i g a t i o n (August, 1983 to July, 1984), by metal cuboid sampler s , measuring 10x10~8cr n. The o r i b a t i d mites extracted from the s o i l by the modified Berlesels funnels, using paper funnels as fecornmended by Balogh, 1958. According to Balogh (1972) c l e a r i n g was carried out. For microscopic examination, the temporary preparation method described by Grandjean (1949 has been adopted. The r e s u l t s could be summmized as follows: 1. The species composition and d i s t r i b u t i o n of o r i b a t i d mites at Nile Delta were arranged systematically and their Ecological d i s t r i b u t i o n were given. A t o t a l number of 63 species belonging to 35 genera were retorded . Among these, one new genus for science, i .e. Aegyptogalumna mastigophora and 15 new taxa i . e. Brachychochthonius n i l i a c a , Brachychochthonius niedbalae, Cryptoplophora garndj eani, Archiphthiracarus aegypticus, Arkhrodamaeus aegypticus, Dyo belba nor toni , Amerioppia hamidi, Multioppia bayoumii, Oppia dentata, Oppia j ugata, Oppia magnus, Oppia t r i f u r cata, Oppia rarnoseta, Oppia d i f f i c i l i s , and Galumna n i l i a c a , whereas only’ one subspecies; i .e. ; iihysotritia ardua p e n i c i l l a t a . Per ez-Inigo, 1969; was f i - r s t l y recorded i n Egypt, and 5 species, i. e. Fosseremus quadriper tltus Grandjean, 1965, Oppia vasians Wallwork, 1961, Oppf ella rossica (Bul - Zachv., 1964), Scheloribates fimbriatus Thor S., 1930 and Galumna dimorpha Krivolutzkaja, 1952 were recorded for the f i r s t time among Egyptian o r i b a t i d fauna. 2. In the present work, the authors discussied the important c h a r a c t e r i s e of the primative oribatid mites (Oribatei, I n f e r i o r s ) and the morphological features of the family: Brachychthoniidae Thor , 1934, Family: Lohmanniidae Berlese, 1916 and also the generic diagnosis of genus C r yptoplophor a Grand jean, 1932 was reviewed 3. I d e n t i f i c a t i o n keys dealhg with ’both of two genera i.e, O p p i a and Galumna are presented. I d e n t i f i c a t - ion of Allogalumnoid groups and Family Oppiidae were submitted . 4 , Redescr’ptions of species Lohmannia turc-menica Bulanovz-Zachvathkina, 1960 are also mentioned, new recorded of Egytpian fauna i.e. O-ppia varians Wallwork, 1961, presented as two s i z e .