Research and IPM

Phenology Model Database

Elm Leaf Beetle

Scientific name: Pyrrhalta (Xanthogaleruca) luteola

Phenology models predict timing of events in an organism's development. For many organisms which cannot internally regulate their own temperature, development is dependent on temperatures to which they are exposed in the environment.

Note: Before using a model that was not field tested in your location, you should test the model for one or more seasons under your conditions to verify that it will work for you.

Model 1 of 3

Elm leaf beetle. IN: Pests of Landscape Trees and Shrubs: An Integrated Pest Management Guide. University of California Statewide IPM project. Div. Agr. Publ. #3359

Location of study: California (field studies)

Developmental threshold

Lower:	51.8°F	(11.0°C)

Method of calculation: Single Sine

Degree-day accumulations required for each stage of development

Start date: March 1

Model 2 of 3

Dahlsten, D. L., S. M. Tait, D. L. Rowney, and B. J. Gingg. 1993. A monitoring system and development of ecologically sound treat- ments for elm leaf beetle. J. Arbor. 19: 181-186.

Location of study: California (field studies)

Developmental threshold

Lower:	51.8°F	(11.0°C)

Method of calculation: not specified (UC IPM recommends Single Sine)

Degree-day accumulations required for each stage of development

Start date: March 1

Model 3 of 3

Dreistadt, S. H. and D. L. Dahlsten. 1990. Relationships of temperature to elm leaf beetle (Coleoptera: Chrysomelidae) development and damage in the field. J. Econ. Entomol. 83: 837-841.

Location of study: California (field studies)

Developmental threshold

Lower:	51.8°F	(11.0°C)

Method of calculation: Single Sine

Degree-day accumulations required for each stage of development

Start date: March 1

Host: English and Siberian elms	DD (°F)	DD (°C)
Begin monitoring egg density:	360.0	200.0
Peak generation egg density:	495.0	275.0