Ziad Aleisa^(1)*

(1) biocontrol lab, cotton administration research, General Commission for Scientific Agricultural Research, Aleppo, Syria.

(*Corresponding author: Ziad Al-eisa,  E-Mail:  ziadissa989@gmail.com)

Received:30/07/2021          Accepted:21/11/2021

Abstract:

Elm considered as deciduous tree which is planted in gardens and on banks of roads, there is many pests attack this tree, one of the most important pest is elm leaf beetle Xanthogaleruca luteola (Müller) (Coleoptera: Chrysomelidae), symptom of infection were observed in Aleppo city gardens’, and by collecting the samples and observing infected trees, it was the cause of this infection is a beetle from coleoptera order and threw taxonomic reference and morphological characters of insect and typical symptoms on infected trees all these data lead that the pest is an elm leaf beetle Xanthogaleruca luteola, and the biology of this insect was studied by periodic collecting of samples from infected trees, and it was found that the insect had three generation per year during 2018and 2019 seasons, and during periodic collecting of samples for biology studying, some eggs were infected by parasitoids on third generation of insect eggs and from taxonomic reference and morphological characters of parasitoids and parasitoid stage it was found that the parasitoid is Oomyzus gallerucae (Hymenoptera: Eulophidae), which constitutes a distinct addition in integrated pest management.

Keyword: elm, elm leaf beetle, insect biology, egg parasitoid, chrysomelidae, Eulophidae.

Full paper in Arabic: pdf