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The Monarch Larva Monitoring Project

Map of Monitoring Sites

Map data last updated: October, 2018. View Larger Map.

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Latest Update

Join the 2019 International Monarch Monitoring Blitz!

Thursday, May 30, 2019 2:00 pm

The 3rd Annual International Monarch Monitoring Blitz is coming up in Canada, Mexico and the United States from 27 July to 4 August 2019. For one week, the Blitz invites people across North America to go out to gardens, parks and green areas and monitor milkweed plants for monarch eggs, caterpillars, chrysalises and butterflies. This information will help researchers identify priority areas for monarch conservation actions. Read More »

Rotating Features

  • The MLMP has updated Activities 1, 3, and 4!

    MLMP activities are occasionally updated. Please download new datasheets from our website and check back often for additional updates. We've made updates to the following activities in 2016: 

    Download the new data sheets to use in 2016 and let us know if you have any questions! 

  • Website Updates

    The MLMP has recently launched our new website! Explore the website to find updated resources, including Activity Datasheets, publications, presentations and resources, and more. 

    More changes will be coming to the data entry site, so stay tuned!

  • Monarch Lab is on YouTube!

    Monarch Lab Ph.D. candidate, Carl Stenoien, has been building an archive of stunning timelapse videos. Carl has been able to expertly record a variety of butterfly species pupating and eclosing. Some of Carl's videos even offer a view into the more sinister side of nature. Carl studies parasitoid wasps (small wasps that lay their eggs inside a pupal host), and was able to get some novel footage of Pteromalus cassotis parasitoids emerging from a parasitized chrysalis, as well as P. cassotis parasitizing a pupating monarch. These are some "must-see" videos for anyone interested in the amazing world of insects. 

    Carl Stenoien's YouTube Channel

  • Rearing Monarchs Responsibly for Citizen Science

    Participating in the MLMP Monarch Survival Activity is easy, especially if you are already rearing monarchs. Simply collect monarchs from the wild, rear them indoors, and report whether they survive to adulthood, or, if they didn't, what caused their death. More information about the MLMP parasitism study can be found here. The data you submit is invaluable, and much of what we know about monarchs is due to the efforts of dedicated citizen scientists. Get involved today!

The MLMP Mission

Our mission is to better understand the distribution and abundance of breeding monarchs and to use that knowledge to inform and inspire monarch conservation.

Steps to get involved

MLMP Activities Login Newsletter iOS App Donate

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