Diaspidiotus ostreaeformis (Curtis, Yes (Ben-Dov et Yes. NSW, SA, Tas., Yes. Associated with Yes. This species has a Assess not required. No 1843) al. 2014; CABI Vic. (Plant Health P. persica. Mostly wide host range, The potential 2015) Australia 2001). infests the bark on being reported from economic Synonym: Quadraspidiotus This species is stems and branches 41 genera in 18 consequences would ostreaeformis (Curtis, 1843) listed as a of trees, but families, mainly only apply to WA [Diaspididae] quarantine pest sometimes can be deciduous trees. should this species Oystershell scale for WA (Poole et found on the fruit Many of these host enter, establish and al. 2011) and is where it causes red plants are widespread spread. WA has listed as a spots (Beardsley & in Western Australia. assessed these declared organism Gonzalez 1975; CABI It is widely consequences as ‘very (Prohibited 2015). distributed in low’ using similar (section 12)) Palaearctic and methodology to the under the Nearctic regions and Australian Western Australia has been introduced Government BAM Act 2007 into Australia, Department of (Government of Argentina, Canada Agriculture and Western Australia and New Zealand Water 2014). (CABI 2015). This Resources(Poole et al. species is already 2011) which meets established in parts of their ALOP. Australia (Plant Health Australia 2001) suggesting that there are regions within Western Australia suitable for the establishment and spread of this pest. Diaspidiotus perniciosus Yes (CABI 2015; Yes. NSW, Qld, SA, Assessment not Assessment not Assessment not No (Comstock, 1881) Yang, Tulake & Li Tas., Vic., WA required required required 2005) (Plant Health Synonym: Quadraspidiotus Australia 2001). perniciosus (Comstock, 1881) [Diaspididae] California scale, San Jose Scale
Diaspidiotus ostreaeformis (Curtis, 1843) Synonym: Quadraspidiotus ostreaeformis (Curtis, 1843) [Diaspididae] Oystershell scale Yes (Ben-Dov et al. 2014; CABI 2015) Yes. NSW, SA, Tas., Vic. (Plant Health Australia 2001). This species is listed as a quarantine pest for WA (Poole et al. 2011) and is listed as a declared organism (Prohibited (section 12)) under the Western Australia BAM Act 2007 (Government of Western Australia 2014). Yes. Associated with P. persica. Mostly infests the bark on stems and branches of trees, but sometimes can be found on the fruit where it causes red spots (Beardsley & Gonzalez 1975; CABI 2015). Yes. This species has a wide host range, being reported from 41 genera in 18 families, mainly deciduous trees. Many of these host plants are widespread in Western Australia. It is widely distributed in Palaearctic and Nearctic regions and has been introduced into Australia, Argentina, Canada and New Zealand (CABI 2015). This species is already established in parts of Australia (Plant Health Australia 2001) suggesting that there are regions within Western Australia suitable for the establishment and spread of this pest. Assess not required. The potential economic consequences would only apply to WA should this species enter, establish and spread. WA has assessed these consequences as ‘very low’ using similar methodology to the Australian Government Department of Agriculture and Water Resources(Poole et al. 2011) which meets their ALOP. No Diaspidiotus perniciosus (Comstock, 1881) Synonym: Quadraspidiotus perniciosus (Comstock, 1881) [Diaspididae] California scale, San Jose Scale Yes (CABI 2015; Yang, Tulake & Li 2005) Yes. NSW, Qld, SA, Tas., Vic., WA (Plant Health Australia 2001). Assessment not required Assessment not required Assessment not required No
fresh-nectarine-from-china-final-report.docx