Improve the logic of the following text:
On pistachio, Brevipalpus damage appears as scabby blotches on the leaf petioles, stems, and nuts. Several of these mites are vectors for a variety of serious plant viruses.
On pistachio, Brevipalpus damage appears as scabby blotches on the leaf petioles, stems, and nuts. Furthermore, several of these mites are vectors for a variety of serious plant viruses.