In 2021 McDougall et al published a study of cycad dieback in Murramarang National Park, north of Batemans Bay. They concluded the culprit was an unnamed scale insect, closely related to Aspidiotus nerii. In 2011 infestations were confined to a small area between Dark Beach and North Head, by 2019 it had spread across Murramarang National Park, and to the settlement sof Depot Beach and Peblly Beach. They concluded that infestation was less in previously burnt areas.
The scale appears to have spread, now widespread at Long Beach and appearing at Lilli Pilli in 2022, and more recently near Potato Point. In 2022 Benjamin Normark described the species, naming it afte rthe park where it was first reported – an entomologist from Massachussetts, Normark has identified all sighting logged on iNaturalit.
- Burrawang scale insect on iNaturalist
- Cycad killer, qu’est-ce que c’est? Dieback of Macrozamia communis on the south coast of New South Wales
- Three new Australian species of the armoured scale genus Aspidiotus Bouche, 1833 (Hemiptera: Diaspididae: Aspidiotini), including an emerging pest of cycads
Stem borer – Siraton internatus
A stem borer weevil was first seen in Rosedale in February 2019, and identified by New Zealand taxonomist Samuel Brown. It has since been logged at Lilli Pilli and Surf Beach, and would appear to be spreading. Nothing mor eis known, except that it is having a singificant impact on plants