Colpocephalum was circumscribed by Christian Ludwig Nitzsch in 1818. Nitzsch classified this taxon as a subgenus of the genus Liotheum. He included four species, which in his taxonomy were called L. (C.) zebra, L. (C.) flavescens, L. (C.) subaequale, and L. (C.) ochraceum.[1] The first three species were nomina nuda; only the last was accompanied with an indication to a previously-published illustration, namely a 17th-century illustration by Francesco Redi.[9][10] He wrote the indication as "Pulex avis pluvialis Redi exp. fig. sup."[1] In order to keep this name valid, Theresa Clay and George Henry Evans Hopkins restricted Carl Linnaeus's 1758 name Pediculus charadrii to only the bottom figure of Redi's plate.[11][12] Strictly applying the ICZN Code, the type species should have been Liotheum (Colpocephalum) ochraceum, as it was the only available name included in the original circumscription.[2]: 278
However, in 1906, Louis Georges Neumann designated "Liotheum (Colpocephalum) zebraNitzsch" as the type species for this taxon instead.[13] Other phthirapterists followed Neumann's designation. In 1948, Hopkins petitioned the International Commission on Zoological Nomenclature (ICZN) to officially allow this species to remain the genus's type species instead of "Liotheum (Colpocephalum) ochraceum; this was published in 1951.[14][2]: 275, 279 Hopkins also notes that L. (C.) ochraceum is congeneric with Colpocephalum uniseriatumPiaget, 1880, the type species of Actornithophilus, which would further complicate the situation.[2]: 278–279 As the species C. zebra only became valid with Hermann Burmeister's species description of Colpocephalum zebra in 1838,[3][2]: 276 he requested that the Plenary Powers of the ICZN designate Colpocephalum zebraBurmeister, 1838 as the type species of Colpocephalum in order to "avoid disastrous confusion."[2]: 279
Video(.mov; 9.5 MB; 31 sec) of "highly mobile" C. turbinatum on a Galápagos hawk wing[29]
Colpocephalum species are examples of "rapid running l[ice]".[30]C. turbinatum, an ectoparasite of various birds including the Galápagos hawk,[4][20]: 754–757 has been described as "highly mobile".[29] Due to their speed, they can easily escape a bird trying to remove them through preening; this allows them to inhabit birds' breast, anal, and back regions, where slower lice would be readily removed.[30]
Colpocephalum species eat feathers; pigeons with large infestations of C. turbinatum can have almost all of their vent region feathers' fluff eaten.[31] High numbers of Colpocephalum can also damage a pigeon's flight feathers and decrease their flying power.[32]Colpocephalum lice can live within flight feathers' quills.[33][32] In addition to eating feathers, C. turbinatum consume their hosts' skin.[34] Adults of this species have also been reported to engage in cannibalism in laboratory colonies, eating their own eggs and up to 80% of their nymphs.[35]
Species
The genus has approximately 135 species, including:[8]
^Price, Roger D. (1968). "The Colpocephalum of the Cuculiformes". Annals of the Entomological Society of America. 61 (4): 816–819. doi:10.1093/aesa/61.4.816.
^Price, Roger D. (1968). "Two New Species of Colpocephalum (Mallophaga: Menoponidae) from the Gruiformes". The Journal of Parasitology. 54 (4): 686–689. doi:10.2307/3277020. JSTOR3277020.
^Price, Roger D. (1967). "The Colpocephalum (Mallophaga: Menoponidae) of the Pelecaniformes". The Canadian Entomologist. 99 (3): 273–280. doi:10.4039/Ent99273-3. S2CID84781020.
^Price, Roger D.; Emerson, K. C. (1974). "A New Species of Colpocephalum (Mallophaga: Menoponidae) from an Indian Flamingo". Journal of the Kansas Entomological Society. 47 (1): 63–66. JSTOR25082622.
^Price, Roger D. (1964). "Colpocephalum (Mallophaga: Menoponidae) from the Piciformes". Journal of the New York Entomological Society. 72 (3): 162–167. JSTOR25005912.
^Price, Roger D.; Beer, James R. (1963). "The Species of Colpocephalum (Mallophaga: Menoponidae) Known to Occur on the Strigiformes". Journal of the Kansas Entomological Society. 36 (1): 58–64. JSTOR25083305.
^Nelson, B.C.; Murray, M.D. (1971). "The distribution of mallophaga on the domestic pigeon (Columba livia)". International Journal for Parasitology. 1 (1): 27. doi:10.1016/0020-7519(71)90042-7. PMID5161201.
^Durden, Lance A.; Lloyd, John E. (2009). "Lice (Phthiraptera)". In Mullen, Gary R.; Durden, Lance A. (eds.). Medical and Veterinary Entomology (2nd ed.). Amsterdam: Elsevier. p. 61. ISBN978-0-12-372500-4.
Clay, Theresa (1947). "A Preliminary Key to the Genera of the Menoponidae (Mallophaga)". Proceedings of the Zoological Society of London. 117 (2–3): 457–477. doi:10.1111/j.1096-3642.1947.tb00532.x.