دراسة نشاط فراشة اللوز الحرشفية (Aporia crataegi L.)‎ على بعض أصناف اللوز في سورية

Abstract EN

A field study of the black-veined white butterfly Aporia crataegi (L.) (Lepidoptera: Pieridae) was carried out on two varieties of almonds, an early maturing variety (Princess) and a late maturing variety “(Sham fark”) in the central and southern regions of Syria during 2008-2009.

Results showed that A.

crataegi goes into diapause as third larval instar within silk nests on branches tips on the upper third of the tree crown.

Larval activity was synchronized with the movement of plant sap and bud swelling, and larvae became active onearly maturing varieties before the late maturing ones, in the same location.

Insect larvae became active in early February in the central area of Syria and it was earlier than that in the southern region (Sweida) which occurred in early March, whereas in Kalamoun area, larval activity started in late March.

Insect larvae continued their development and molted to produce the 4th and 5th larval stages, followed by pupation and the emergence of adults few days later and influenced by environmental conditions.