The first USS Mosquito was believed to have been purchased at Philadelphia late in 1775 for the new Continental Navy. She patrolled the Delaware River until destroyed during the British conquest of Philadelphia led by the Howe brothers and completed by them in October 1777. The Dictionary of American Naval Fighting Ships (DANFS) has identified this ship as a sloop, yet records from the period which are believed to refer to the ship have consistently identified her as being a schooner. These records also provide a bit more detail of her fate, indicating she was burned after capture in July 1777 during Royal Navy operations along the Delaware River.