Milkweed and monarch butterfly observations, 1910–2018 [Excel spreadsheet]

Publication Type:



Idaho Department of Fish and Game (2018)

Call Number:



Asclepias asperula asperula, Asclepias cryptoceras davisii, Asclepias fascicularis, Asclepias incarnata, Asclepias speciosa, Asclepias spp., Danaus plexippus


This Excel spreadsheet compiles possible, trusted, and verified sightings of milkweed species and monarch butterflies in Idaho as of 1/22/2019. Observation dates range from 1910 through 2018. Substantial QAQC of records from WMMM and iNaturalist was done during the compilation, as well as review/verification/edits to observations currently in the IFWIS database. Information captured can include scientific and common names, count, date, survey method, location, observer name, and source of the information. The spreadsheet has 7,862 records total.


Shelf Note: Electronic Files - Zoology: Multiple_Species