Unaspis citri occurs in Yemen
In April 1998, during a survey on citrus pests carried out in the El-Mohamedeyn Valley (Hadramawt, Yemen), it was found that Unaspis citri (EPPO A1 quarantine pest) was widespread and heavily infesting leaves and branches of lime (Citrus aurantifolia). In some heavily attacked orchards, branches were killed and yield was severely reduced. Yield losses caused by U. citri were estimated in the El-Mohamedeyn Valley between 30-50 %. The author noted that this pest had been previously reported in 1988, also causing heavy infestations. The EPPO Secretariat had previously no information on the occurrence of this pest in Yemen.
Salh Salem Korbel (1998) Spread of Unaspis citri in El-Mohamedeyn Valley along the Hadramount coast of Yemen. Disease and pest outbreaks.
Arab and Near East Plant Protection Newsletter, no. 27, December 1998, FAO, p 29.