ملاحظات أولية عن بعض المفترسات الحشرية و الحيوانية في حقول البرسيم الحجازي Medicago sativa L. بمنطقة الجديدة، طرابلس، ليبيا

Abstract EN

Predators population in alfalfa field was studied at Jedieda region, Tripoli, Libya.

Results showed that the total number of insects collected from March, until the end of October, 1987, was 8913 individuals, representing ”7” families and 6 orders.

The relative occurrence of these insects were 37% for Chrysopa vulgaris L.

(Chrysopidae, Neuroptera) and 2% for its larvae; 27% adults and 1.1% larvae of the coccinellids Coccinella septumpunctata L., C.

novemnotata H., C.

undecimpunctata L.

and C.

tredecimpunctata L.

(Coccinellidae, Coleoptera); 1.17% of Syrphus corollae (Syrphidae, Diptera); 7.8% of Nabis ferrus L.

(Nabidae); 3% of Tripolitanus kruger (Asilidae) and 0.24% of members of the family Libellulidae and 5% of the family Thomisidae.