The Hobbit (film series) was written by Fran Walsh, Philippa Boyens, Jackson, and Guillermo del Toro, who was originally chosen to direct before his departure from the project. The films take place in the fictional world of Middle-earth sixty years before the beginning of "The Lord of the Rings", and follow hobbit Bilbo Baggins (Martin Freeman), who is convinced by the wizard Gandalf the Grey (Ian McKellen) to accompany thirteen dwarves, led by Thorin Oakenshield (Richard Armitage), on a quest to reclaim the Lonely Mountain from the dragon Smaug (voiced by Benedict Cumberbatch). The films also expand upon certain elements from the novel and
J. R. R. Tolkien the field of taxonomy, over 80 taxa (genera and species) have been given scientific names honouring, or deriving from, characters or other fictional elements from "The Lord of the Rings", "The Hobbit", and other works set in Middle-earth. Several taxa have been named after the character Gollum (also known as Sméagol), as well as for various hobbits, the small humanlike creatures such as Bilbo and Frodo Baggins. Various elves, dwarves, and other creatures that appear in his writings as well as Tolkien himself have been honoured in the names of several species, including the amphipod "Leucothoe tolkieni", and the wasp