Topic summary
Hawk moth

Extracted from the Wikipedia article Sphingidae.
Adults
A recent global study found that specialization is driven primarily by the flower rather than the hawk moth. Researchers observed that the hawk moths visited a variety of flowers with different corolla tube lengths, making them generalists. On the other hand flowers with longer corolla tubes limited the number of hawk moth species that could pollinate and reach their nectar, making them more specialized. Data also showed that flowers with longer corolla tubes produced greater volumes of nectar, likely to compensate for more specialized hawk moths species. The findings of the study demonstrated the importance of the variation in hawk moth proboscis length and how it shapes flower evolution.