@article{Kitching2008,
  author    = {Ian J. Kitching},
  title     = {The phylogenetic relationships of Morgan's Sphinx, Xanthopan morganii (Walker), the tribe Acherontiini, and allied long-tongued hawkmoths (Lepidoptera: Sphingidae, Sphinginae)},
  journal   = {Zoological journal of the Linnean Society},
  number    = {135},
  pages     = {471 -- 527},
  year      = {2008},
}