The importance of bird’s – foot trefoil consists firstly in the fact that can replace alfalfa and trefoil, on the places where other forage plants  can't be cultivated and also because has the biggest resistance at the pests and disease attack.  In the production case of the bird's – foot trefoil seed, one of the insects that produces the greatest damages, about 80% from the total production, is the bird's – foot trefoil trips. Even if it was mentioned in the special literature from the country and abroad, that pest was studied a little and that because this paper proposed to emphasize some experimental data concerning of its biology, specially some aspects regarding the biometrical measurements effectuated on the second install larvae of Odontothrips loti Hal. For the investigations accomplishing the experimental field was placed at Didactical Station Timisoara. The experiences location was realized after the standard method of the experiences location, in three repetitions, each parcel with a length of 2m and latitude of 1m. In realizing the biometrical measurements it built an insulator with metallic skeleton and covered with gauze. For studying the second install larvae of bird's – foot trefoil thrips, the samples taking were accomplished during a period of 20 days, with a periodicity of taking at each 48 hours. After the biometrical measurements it established that the length of second install larvae body of Odontothrips loti Hal. was of 1,230 mm ± 0,19 mm.The length of cephalic capsule were of 0,080 mm ± 0,02 mm. The cephalic capsule latitude was of 0,120 mm ±0,02 mm.

birds - foot trefoil; Odontothrips loti; larvae; biometrical measurements

Presentation: oral