Galls in The Leaves of Salvadora persica (L.) caused by a Heteroptran Bug in Khartoum State.

Abstract

Leaf galls were observed in Salvadora persica trees growing in the Khartoum Botanical Garden. The galls were initiated by salivary secretions of a Heteroptera bug which bred and lived in the gall. Histological studies weremade in infested leaves and showed the malignant cells of the gall gave enough space for the tiny nymphs to live protected from high external temperatures and dry conditions. The malignant growth seemed to have no effect on the infested trees.