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The new species Gnaptor medvedevi sp. n. is described from southwestern Turkey. The new species is closely related to G. spinimanus but differs from it in narrower parameres, in the structure of the spiculum gastrale, and in the sculpture of the prothoracic hypomera. The new monotypical subgenus Plesiognaptor subgen. n. is described for G. prolixus; the… (More)
An inverse spectral problem is studied for Dirac operators with discontinuities in the case when an spectral parameter appears not only in the differential equation but also in the one of boundary condition and jump conditions, polynomially.