Any of about 4,000 insect species (family Reduviidae) characterized by a thin, necklike structure connecting the narrow head to the body. Many species are common to North and South America. Ranging in size from 0.5 to 1 in. (13–25 mm), assassin bugs use their short, three-segmented beak to suck body fluids from their victims. Most assassin bugs prey on other insects; some, however, suck blood from vertebrates, including humans, and transmit diseases. One species, the large assassin bug, defends itself by accurately “spitting” saliva toxic enough to blind a human.
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Felton had been wounded in the duke's disastrously managed military expedition of 1627 against the French at La Rochelle and he held a personal grudge against his victim who, he believed, had corruptly withheld some of his pay and deprived him advancement.
Buckingham was hugely unpopular in the land for the national disgrace of defeat by the French although, with the help of the king, Charles I, he had avoided legal moves against him by Parliament for corruption and incompetence. Shortly after the murder Felton presented himself before the crowd that had gathered and, expecting to be well received, announced his guilt. He was immediately arrested and taken before magistrates, who sent him to London for interrogation.
The privy council attempted to have Felton questioned under torture on the rack, but the judges resisted, unanimously declaring its use to be contrary to the laws of England. While awaiting trial his actions were widely celebrated in poems and pamphlets, but the process of law took its course and he was hanged at Tyburn on 28 October 1628. In a miscalculation by authorities, his body was sent back to Portsmouth for exhibition where, rather than becoming a lesson in disgrace, it was made an object of veneration.
The Duke's assassination features in Philippa Gregory's novel Earthly Joys.