Fortuitous establishment of Rhyzobius lophanthae (Coleoptera: Coccinellidae) and Aphytis lingnanesis (Hymenoptera: Encyrtidae) in South Texas on the cycad aulacaspis scale, Aulacaspis yasumatsui (Hemiptera: Diaspididae).

摘要

This paper indicates that the parasitoid Aphytis lingnanensis and the predator Rhyzobius lophanthae have become fortuitously established on cycad aulacaspis scale (Aulacaspis yasumatsui) in South Texas, USA. This is thought to be the first report of an Aphytis species attacking Aulacaspis yasumatsui. Although the abundance of cycad aulacaspis scale varies throughout the year, to date the scale has not reached problematic population levels in South Texas.