Lipoptena cervi, the deer ked or deer fly, is a species of biting fly in the family of louse flies, Hippoboscidae. These flies are commonly encountered in temperate areas of Europe, Siberia, and northern China. They have been introduced to North America.[12] They are parasites of elk, deer, and other deer family members, burrowing through the fur and sucking the blood of the host animals. Adults are only 5–7 mm (0.20–0.28 in) in length and brownish in colour. Their bodies are flat and elastic, making their removal difficult. L. cervi is a poor flier and can only fly for short distances. Once the insect reaches its target, it sheds its wings and starts burrowing through the fur.
Bite
Lipoptena cervi without wings.
Although their life cycle depends on deer, they may on rare occasions bite humans, producing responses ranging from unnoticeable to highly allergic. Initially, the bite may be barely noticeable and leaves little or no trace. Within 3 days, the site may develop into a hard, reddened welt. The accompanying itch is intense and typically lasts 14 to 20 days. Occasionally, an itch papule may persist for up to a year.[13] The main annoyance in humans is the inconvenience and unpleasantness of removing keds from hair and clothes.
Horses can develop colic after a bite.[15] Dogs that are bitten may develop a moderate to severe dermatitis.[15] And L. cervi can attain Bartonella schoenbuchensis from biting deer.[13] Much, however, remains unknown about the ked's potential to pose a medical or veterinary threat.
Both males and females of L. cervi consume blood from their hosts. Feeding lasts 15 to 25 minutes.[13] The female produces one larva at a time and retains the developing larva in her body until it is ready to pupate. The larva feeds on the secretions of a "milk gland" in the uterus of its mother. The female gives birth to a fully mature white prepupa. She may produce larvae for as long as 10 months. A newborn prepupa immediately darkens, forms the puparium, and begins to pupate on the forest floor, or where the deer are bedded. After pupation, the winged adult emerges and flies in search of a host. Upon finding a host, the adult fly breaks off its wings and it is permanently associated with its host.[17]
^Curtis, J. (1824). British entomology. Vol. 1. London: Privately published. pp. 11–14.
^Olivier, G.A. (1792). Insectes [(i.e., Arthropoda) Pt. 5]. Vol. 7, pp. 1-368 (=livr. 54) [1793.05.13]. In Société de Gens de Lettres, de Savants et d'Artistes Encyclopedie methodique. Paris: Histoire naturelle.
^ abOlfers, I.F.M. von (1816). De vegetativis et animatis corporibus in corporibus animatis reperiundis commentarius. Pars I. Berolini [=Berlin]: Maureriana. pp. vi + 112 + [1] pp., 1 pl.
^Roser, K.L.F. von (1840). "Erster Nachtrag zu dem im Jahre 1834 bekannt gemachten Verzeichnisse in Wurttemberg vorkommender zweiflugliger Insekten". Correspondenzbl. K. Wurttemb. Landw. Ver., Stuttgart. 37 [=N.S. 17] (1): 49–64.
^Buss B, Kearnery C.B., Coleman, C., Henning, J.D. (December 2016). "Detection of Lyme disease and anaplasmosis pathogens via PCR in Pennsylvania deer ked." Journal of Vector Ecology 41 (2): 292-294.
^ abJonas Malmsten in Sauli Härkönen, ed. (2007). The Scandinavian deer ked situation from a veterinary medical perspective. 1st Nordic Workshop on Biology, Applied Importance and Current Research on the Deer Ked, Workshop Schedule and Abstracts. Finland: Finnish Forest Research Institute. p. 22.
^Gothe R, Schöl H (1996). "Stone age deerfly (Lipoptena cervi) found with a mummy in a glacier". Tierärztliche Praxis (in German). 24 (6): 549–551. PMID9139418.
^ abcArja Kaitala; Sauli Härkönen; Sauli Laaksonen; Pekka Niemelä; Petteri Nieminen; Hannu Ylönen (2007). Sauli Härkönen (ed.). Deer Ked Project – a broadly-based interdisciplinary research project in Finland. 1st Nordic Workshop on Biology, Applied Importance and Current Research on the Deer Ked, Workshop Schedule and Abstracts. Finland: Finnish Forest Research Institute. p. 22.
^ abMaa, T. C. (1969). "A Revised Checklist and Concise Host Index of Hippoboscidae (Diptera)". Pacific Insects Monograph. 20. Honolulu: Bishop Museum, Honolulu, Hawaii: 261–299.
^Sauli Laaksonen; Tommi Paakkonen; Raine Kortet; Anne-Mari Mustonen; Petteri Nieminen; Laura Härkönen; Milla Solismaa; Arja Kaitala; Hannu Ylönen; Jari Aho; Sauli Härkönen (2007). Sauli Härkönen (ed.). Deer ked – a threat to reindeer welfare?. 1st Nordic Workshop on Biology, Applied Importance and Current Research on the Deer Ked, Workshop Schedule and Abstracts. Finland: Finnish Forest Research Institute. p. 22.
^Hermosilla, C.; Pantchev, N; Bachmann, R; Bauer, C (2006). "Lipoptena cervi (deer ked) in two naturally infested dogs". Veterinary Record. 159 (9). Great Britain: British Veterinary Association: 286–287. doi:10.1136/vr.159.9.286. ISSN0042-4900. PMID16946313. S2CID10013843.
Notes
11. Egri, B., Rigó, E.(2014): A Hanság gímszarvasainak
Lipoptena cervi (Linnaeus, 1758) fertőzöttségéről
(Irodalmi összefoglaló és saját megfigyelések)(About the
deer ked ((Lipoptena cervi, 1758))infestation on the red deer in Hanság Region. Literature review and
own examinations. Magyar Állatorvosok Lapja, 136.2.:
115–122.