Dermacentor marginatus ( Sulzer, 1776 )

Guglielmone, Alberto A., Petney, Trevor N. & Robbins, Richard G., 2020, Ixodidae (Acari: Ixodoidea): descriptions and redescriptions of all known species from 1758 to December 31, 2019, Zootaxa 4871 (1), pp. 1-322 : 139-140

21. Dermacentor marginatus ( Sulzer, 1776) .

A Palearctic species whose adults are usually found on Artiodactyla : Bovidae and Suidae , and Perissodactyla : Equidae ; larvae and nymphs are commonly recovered from Erinaceomorpha : Erinaceidae , Lagomorpha : Leporidae , and Rodentia (several families), but all parasitic stages have been collected from Mammalia (several orders). Adults and nymphs have been recovered from Passeriformes : Corvidae and Muscicapidae ; adults and undetermined immature stages have been taken from Galliformes : Phasianidae ; adult ticks alone have been found on Accipitriformes : Accipitridae , Charadriiformes : Burinhidae, Coraciiformes : Coraciidae , and Passeriformes : Corvidae and Laniidae ; immature stages have been recovered from Aves (several orders), Squamata : Lacertidae , and Anura : Ranidae . Dermacentor marginatus is a very frequent parasite of humans.

M: Koch (1844a), under the name Dermacentor dentipes , a synonym of Dermacentor marginatus

F: Sulzer (1776), under the name Acarus marginata Koch (1844a) and given its current status in Brumpt (1913) N: Dzhaparidze (1948); see note below

L: Dzhaparidze (1948); see note below

Redescriptions

M: Pomerantzev (1950), Emchuk (1960), Babos (1964), Nosek and Sixl (1972), Filippova and Panova (1989a), Estrada-Peña and Estrada-Peña (1991), Teng and Jiang (1991), Siuda (1993), Hillyard (1996), Filippova (1997), Yu et al. (1997), Walker, A.R. (2003), Estrada-Peña et al. (2004, 2017), Pérez-Eid (2007), Slovák (2010)

F: Pomerantzev (1950), Emchuk (1960), Babos (1964), Nosek and Sixl (1972), Filippova and Panova (1989a), Estrada-Peña and Estrada-Peña (1991), Teng and Jiang (1991), Siuda (1993), Hillyard (1996), Filippova (1997), Yu et al. (1997), Walker, A.R. (2003), Estrada-Peña et al. (2004, 2017), Pérez-Eid (2007), Slovák (2010)

N: Černý (1957b), Reznik (1959), Emchuk (1960), Alifanov (1963a), Chiang (1963), Babos (1964), Nosek and Sixl (1972), Filippova et al. (1981), Filippova and Panova (1985), Estrada-Peña and Estrada-Peña (1991), Filippova (1997), Teng and Jiang (1991), Siuda (1993), Pérez-Eid (2007), Estrada-Peña et al. (2017)

L: Reznik (1956), Černý (1957b), Chiang (1961), Emchuk (1960), Alifanov (1963a), Babos (1964), Nosek and Sixl (1972), Sixl (1975), Filippova and Panova (1985), Filippova et al. (1986), Estrada-Peña and Estrada-Peña (1991), Filippova (1997), Teng and Jiang (1991), Siuda (1993), Hillyard (1996), Pérez-Eid (2007), Estrada-Peña et al. (2017)

Note: Filippova and Plaksina (2005) stressed the difficulties involved in morphologically differentiating species of the Dermacentor marginatus complex ( Dermacentor marginatus , Dermacentor niveus , Dermacentor nuttalli , Dermacentor silvarum , Dermacentor ushakovae ), a situation that can easily lead to incorrect identification of the species in this group, as recently noted by Khasnatinov et al. (2016) for Dermacentor silvarum and Dermacentor nuttalli . Therefore, uncertainty exists concerning the descriptions and redescriptions above. Estrada-Peña et al. (2017), among others, treated Dermacentor niveus as a synonym of Dermacentor marginatus , based on empirical evidence, but Bogdanov et al. (2017) suggest that Dermacentor marginatus and Dermacentor niveus are not conspecific. It seems likely that some of the species in this group will ultimately be consigned to the junior synonymy of Dermacentor marginatus , but the type of Dermacentor marginatus is lost, making comparisons difficult. A formal revision of this medically important assemblage is needed, including designation of a neotype of Dermacentor marginatus , an issue under research by Estrada-Peña and colleagues (Estrada-Peña, A., personal communication to AAG). Meanwhile, all species in the Dermacentor marginatus group are considered provisionally valid here. Filippova (1997) ignored descriptions of the nymph and larva of Dermacentor marginatus published prior to the studies of Filippova et al. (1981) and Filippova and Panova (1985) because they were regarded as unhelpful for diagnostic purposes, but we consider some of the redescriptions in the above lists to be valid. We were unable to obtain some of the redescriptions of Dermacentor marginatus that were published in countries constituting the former Soviet Union. Records by Temman et al. (2019) of Dermacentor marginatus from Thailand (Oriental Zoogeographic Region) require confirmation.