The Monterey pine midge, Thecodiplosis piniradiatae (Snow and Mills), works at the base of the newly formed needles of Monterey pine and other pines in central California and causes them to become swollen and shortened (fig. 246). Sometimes heavily infested twigs are killed and the ornamental value of the trees is impaired.

- Robert Furniss, Valentine Carolin: (1977) Western Forest Insects^©