Each year, with the help of numerous partners across thirteen states and Mexico, RiversEdge West produces an annual distribution map that notes the presence and absence of Diorhabda spp. from sampling sites across the west. The links below contain all archived tamarisk beetle maps spanning over a decade.
 
These data in no way represent all locations where the tamarisk beetle may exist, but give a broad perspective of beetle establishment and dispersal, providing land managers with information that may help with their integrated pest management plans, restoration strategies, and funding opportunities.
 
If you would like to track the tamarisk beetle and to aid in data collection in North America, please visit our Applied Science page.

2023 Tamarisk Beetle Distribution Map

2022 Tamarisk Beetle Distribution Map

2021 Tamarisk Beetle Distribution Map

2021 Interactive ArcGIS Online Beetle Data Map

2020 Tamarisk Beetle Distribution Map 

2019 Tamarisk Beetle Distribution Summary

2018 Tamarisk Beetle Distribution Map and 2018 Summary

2017 Tamarisk Beetle Interactive Map, Annual Distribution Map, and 2017 Summary

2016 Tamarisk Beetle Distribution Map and 2016 Summary

2015 Tamarisk Beetle Distribution Map

2014 Tamarisk Leaf Beetle Distribution Map

2014 Partners Providing Data

2014 Regional Distribution Maps

2014 New Mexico Tamarisk Beetle Distribution Map

2014 Arkansas Basin Tamarisk Beetle Distribution Map

2014 Colorado River Basin Tamarisk Beetle Distribution Map

2014 Colorado River Basin Tamarisk Beetle Presence/Absence

2013 Tamarisk Leaf Beetle Distribution Map

2012 Tamarisk Leaf Beetle Distribution Map

2011 Tamarisk Leaf Beetle Distribution Map

2010 Tamarisk Leaf Beetle Distribution Map

2009 Tamarisk Leaf Beetle Distribution Map

2008 Tamarisk Leaf Beetle Distribution Map

2007 Tamarisk Leaf Beetle Distribution Map