Dendrothrips ornatus (Jablonowski, 1894)
on Ligustrum, Syringa
Ligustrum ovalifolium, Hungary, Budapest © László Érsek: general image of the infestation
detail. with larvae and two adults
fresh and dried drops of frass
Leaves are disfigured and have silvery spots, because epidermis cells have been emptied and are air-filled now. Thrips produce proportionally large drops of semi-liquid frass that dry and as numerous tiny black specks contribute to the general picture.