author(s)
Belguendouz Rachida, Biche Mohamed

abstract
Our inventory of Algerian Diaspididae realized from 2003 to 2005 permuted to us to know the existence of 118 species that infested 488 plants. 18 new species were identified belonging to the genera of Aspidaspis, Diaspidiotus, diaspidiotu, Carulaspis, Chionaspisplatani, Diaspis, Parlatoria, Parlatoreopsis, Leucaspis, Discodiaspis, and Froggattiella. The Diaspidini and Aspidiotini tribes were the most represented in general (80%) and in species (80%). They infested 254 and 172 plants respectively. Parlatorini and Odonaspidini host plants stilled the less important with 72 and 13 respectively. Most of the Diaspididae host plants were Rosaceae (7, 3 %), Poaceae (6,5 %) and Fabaceaern(6 %). The inventory of their Predators makes to sand out 3 families: Coccinellidae, Nitidullidae and Coniopterygidae, included 14 species, which the first contained 5 genus Rhysobius, Chilocorus, Exochomus, Pharoscymnus and Mimopullus. The parasitoids included 23 Hymenoptera species: 14 ectophage (who Aphytis is the most common) and 9 endophage whit 3 genera (Encarcia, Comperiella, Chiloneurium). The most representative species were Encarsia citrina, Aphytishis hispanicus and A. chilensis.