The search for Darwin's moth is a tale of scientific prediction and discovery that spanned several decades.
While studying Angraecum sesquipedale, a Madagascan orchid with an exceptionally long flower spur, Charles Darwin predicted the existence of a moth with an equally long proboscis capable of reaching the nectar deep within the flower.
Despite Darwin’s confidence in his prediction, the moth remained undiscovered during his lifetime. It wasn’t until 1903, over 40 years later, that the moth was finally observed in Madagascar.
The discovery was made by entomologist Lionel Walter Rothschild and Karl Jordan, who identified the moth as a subspecies of Xanthopan morganii.
The proboscis of this moth, as Darwin had predicted, was indeed long enough to pollinate the orchid.
The search for Darwin’s moth remains a classic story in the history of biology, illustrating the predictive power of scientific theories.
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About The Author
John Bagnasco has been in the gardening industry for over 50 years, starting with a horticulture degree from Michigan State University and following a stint at Frank’s Nursery and Crafts in Detroit.
After publishing his first book “Plants for the Home Vol. I” in 1976, he moved to California to become regional manager and buyer for the Nurseryland division of Sunbelt Nursery Group.
He then became the head buyer for Armstrong Garden Centers based in Glendora, California. John had a part-time affiliation with Creative Promotions for ten years before joining them full-time in October 2000 as a senior editor and radio personality for Garden Compass.
John has also taught horticulture classes at Palomar College and San Diego State University.
He is the host of the DVD “The Essential Guide to Roses,” which also features Bryan Main and Bruce and Sharon Asakawa.
His most recent book is “Planting Designs for Cacti and Succulents”.
Currently, John is a co-host on “Garden America,” an interactive live gardening show that additionally provides podcasts of the broadcasts accessible on all major platforms.
You can contact John here.