According to National Geographic News the above is a relatively new species of fly that formed as a hybrid of two existing species:
The Lonicera fly evolved as a hybrid of two existing U.S. species, the blueberry maggot and the snowberry maggot, according to the study. The newfound species is named after the honeysuckle plant (scientific name: Lonicera), which the insect's life cycle revolves around.
Apparently, speciation by hybridization takes place in fish too:
German researchers have studied cichlids (a type of tropical freshwater fish) living in tiny volcano-crater lakes in Cameroon, West Africa. Their studies have shown that at least one cichlid species started off as a hybrid.
Among cichlids this process likely takes thousands of years. The Lonicera fly's evolution, however, has occurred only in the 250 years since its honeysuckle host plant arrived in North America.
You can also go here for more info.