Agent

Aphalara itadori Shinji

Class: Insecta
Order: Hemiptera
Family: Psyllidae

Agent Name References:
- Pratt, C.F., R.H. Shaw, R.A. Tanner, D.H. Djeddour, and J.G.M. Vos. 2013. Biological control of invasive non-native weeds: An opportunity not to be ignored. Entomologische Berichten 73(4): 144-154.
- Shaw, R.H., S. Bryner, and R. Tanner. 2009. The life history and host range of of the Japanese knotweed psyllid, Aphalara itadori Shinji: Potentially the first classical biological weed control agent for the European Union. Biological Control 49: 105-113.
- Shaw, R.H., R. Tanner, D. Djeddour, and G. Cortat. 2011. Classical biological control of Fallopia japonica in the United Kingdom - lessons for Europe. Weed Research 51(6): 552-558.

Weed

Fallopia japonica (Houtt.) Ronse Decraene

Family: Polygonaceae
Common Name: Japanese knotweed

Origin: Asia

Weed Name References:
- Shaw, R.H., S. Bryner, and R. Tanner. 2009. The life history and host range of of the Japanese knotweed psyllid, Aphalara itadori Shinji: Potentially the first classical biological weed control agent for the European Union. Biological Control 49: 105-113.
- Shaw, R.H., R. Tanner, D. Djeddour, and G. Cortat. 2011. Classical biological control of Fallopia japonica in the United Kingdom - lessons for Europe. Weed Research 51(6): 552-558.

Weed Common Name References:
- Shaw, R.H., S. Bryner, and R. Tanner. 2009. The life history and host range of of the Japanese knotweed psyllid, Aphalara itadori Shinji: Potentially the first classical biological weed control agent for the European Union. Biological Control 49: 105-113.
- Shaw, R.H., R. Tanner, D. Djeddour, and G. Cortat. 2011. Classical biological control of Fallopia japonica in the United Kingdom - lessons for Europe. Weed Research 51(6): 552-558.

Weed Origin References:
- Shaw, R.H., S. Bryner, and R. Tanner. 2009. The life history and host range of of the Japanese knotweed psyllid, Aphalara itadori Shinji: Potentially the first classical biological weed control agent for the European Union. Biological Control 49: 105-113.

Release and Source Information

List: 1 - Exotic Organisms Intentionally Introduced

Source: Ex. Japan (southern)
Year: 2010
Region: Europe_Eurasia
Country: England
Subregion of Country: Berkshire
Subregion specific:

Release History: Berkshire 2010-2013

Release Notes: Restricted release at 7 non-riparian sites due to stringent license conditions.

Source Information References:
- Shaw, R.H. 2013. Progress with weed biocontrol projects, CABI in the UK. June 2013. CABI United Kingdom. 3 pp.
- Pratt, C.F., R.H. Shaw, R.A. Tanner, D.H. Djeddour, and J.G.M. Vos. 2013. Biological control of invasive non-native weeds: An opportunity not to be ignored. Entomologische Berichten 73(4): 144-154.
- Shaw, R.H. 2013. (personal communication) CABI, Bakeham Lane, Egham, Surrey, TW20 9TY, United Kingdom.
- Shaw, R.H., R. Tanner, D. Djeddour, and G. Cortat. 2011. Classical biological control of Fallopia japonica in the United Kingdom - lessons for Europe. Weed Research 51(6): 552-558.
- Shaw, R.H., S. Bryner, and R. Tanner. 2009. The life history and host range of of the Japanese knotweed psyllid, Aphalara itadori Shinji: Potentially the first classical biological weed control agent for the European Union. Biological Control 49: 105-113.

Original Host Species

Fallopia japonica (Houtt.) Ronse Decraene

Original Host Species References:
- Shaw, R.H. 2013. (personal communication) CABI, Bakeham Lane, Egham, Surrey, TW20 9TY, United Kingdom.

Establishment

Established: Unknown
Established in Subregion of Country:
Established in Subregion specific:

Establishment References:
- Shaw, R.H. 2013. (personal communication) CABI, Bakeham Lane, Egham, Surrey, TW20 9TY, United Kingdom.
- Pratt, C.F., R.H. Shaw, R.A. Tanner, D.H. Djeddour, and J.G.M. Vos. 2013. Biological control of invasive non-native weeds: An opportunity not to be ignored. Entomologische Berichten 73(4): 144-154.

Abundance

Unknown

Abundance References:
- Shaw, R.H. 2013. (personal communication) CABI, Bakeham Lane, Egham, Surrey, TW20 9TY, United Kingdom.

Agent Impact

Impact: Unknown
Geographic Scale of impact: Unknown
Impact Notes: Evidence of successful overwintering, but augmentations every year make persistence of the same population difficult to prove.

Impact References:
- Shaw, R.H. 2013. (personal communication) CABI, Bakeham Lane, Egham, Surrey, TW20 9TY, United Kingdom.
- Pratt, C.F., R.H. Shaw, R.A. Tanner, D.H. Djeddour, and J.G.M. Vos. 2013. Biological control of invasive non-native weeds: An opportunity not to be ignored. Entomologische Berichten 73(4): 144-154.

Limiting Factors

None

Other Attack

Were other species attacked?: No
Other Species Attacked Notes:

Research Organizations

International Institute of Biological Control, United Kingdom (IIBC)

Notes