Report of two parasitoid wasps on Helicoverpa armigera (Lep.: Noctuidae) from Iran

In a two-year study on natural enemies of tomato fruit worm, Helicoverpa armigera (Hubner) (Lep.: Noctuidae) in Golestan province, two parasitoid wasps belonging to the family Ichneumonidae were identified, which are newly recorded from Iran: 1. Hyposoter didymator (Thunberg), which was collected in 8 July 2003, in Seyed-Miran, 9 Km west of Gorgan, and 2. Ctenichneumon panzeri (Wesmael), which was collected in 20 July 2003 at Gorgan Agricultural Research Station. These two species were identified by Dr K. Horstmann, Universitaet Wuerzburg, Germany and Dr E. Diller, Zoologische Staatssammlung Munchen, Germany, respectively

Uniqueness Theorem for the Inverse Aftereffect Problem and Representation the Nodal Points Form

In this paper, we consider a boundary value problem with aftereffect on a finite interval. Then, the asymptotic behavior of the solutions, eigenvalues, the nodal points and the associated nodal length are studied. We also calculate the numerical values of the nodal points and the nodal length. Finally, we prove the uniqueness theorem for the inverse aftereffect problem by applying any dense subset of the nodal points