iNaturalist: Guam CRB Citizen Science

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The Guam Coconut Rhino Beetle Citizen Science Project (CRB-CS) is currently in a very early stage of development.


Roland Quitugua and Aubrey Moore at the University of Guam Cooperative Extension Service have developed a rhino beetle trap that catches more than ten times as many beetles as pheromone traps currently in use. They think it is possible that placing a few of these traps in a neighborhood will catch enough beetles to reduce damage to palms to an acceptable level and looking for volunteer citizen scientists to help with their research.

The essential idea behind the CRB-CS is to recruit volunteers from the public to help with this trapping effort. We are looking for volunteers who are interested in checking one or more traps in their neighborhood on a daily basis. We are planning to use our iNaturalist project site as data entry tool which  volunteers can use to report the numbers of beetles caught in the trap or traps they are monitoring. Citizen scientists will be asked to check traps on a daily basis and to add observations to the iNaturalist project database whenever beetles are trapped.

Setting Up and Operating a Rhino Beetle Trap

Information to be added.

Using iNaturalist

Sign up for an iNaturalist account. This is totally free. You should set your default time zone to (GMT+10:00) Guam.

Initial Steps

  1. Open the Guam Coconut Rhino Beetle Citizen Science Project.
  2. Click on Add observations to this project.
  3. If this is a new trap, you will need to enter an initial observation as follows:
  4. What did you see? Oryctes rhinoceros
  5. When did you see it? Enter the date on which the trap was installed.
  6. Where were you? Enter a label such as "Trap 999, Yigo, Guam", then put a point on the interactive map as accurately as possible. Zooming in and switching to Satellite view may be usefull.
  7. Near the bottom of the page, there is a box entitled Fields for Guam Coconut Rhino Beetle Citizen Science Project.  Enter 0 for Number of males and Number of females
  8. Click on Agree to project terms and Save observation.
  9. Whenever you find beetles in your trap, please enter an observation as follows:

Ran into what looks like a bug in iNaturalist when I tried to enter a new observation.Submitted a bug report to the developers. CRB-CS development temporarily stalled until this issue has been resolved.

Second bug report submitted.

Technical Notes

  1. The URL for the Guam Coconut Rhinoceros Beetle Citizen Science Project is
  2. There is an R library, rnat, for getting iNaturalist data at