https://phaidra.vetmeduni.ac.at/o:3249 Hard ticks in Burmese amber with Australasian affinities Chitimia-Dobler, Lidia Lidia Chitimia-Dobler Bundeswehr Institute of Microbiology Mans, Ben J. Ben J. Mans 0000-0002-0177-0029 University of South Africa Handschuh, Stephan Stephan Handschuh 0000-0002-2140-7892 University of Veterinary Medicine Vienna Würzinger, Felix Felix Würzinger Keyence Deutschland GmbH Dunlop, Jason A. Jason A. Dunlop 0000-0002-0179-6640 Leibniz Institute for Evolution and Biodiversity Science Pfeffer, Timo Timo Pfeffer Keyence Deutschland GmbH Cambridge University Press text eng Three examples of metastriate hard ticks (Ixodida: Ixodidae) with apparent affinities to modern Australasian genera are described from the mid-Cretaceous (ca. 100 Ma) Burmese amber of Myanmar. Two nymphs of Bothriocroton muelleri sp. nov. represent the oldest (and only) fossil record of this genus, living members of which are restricted to Australia and predominantly feed on monitor lizards, snakes and echidnas. A female of Archaeocroton kaufmani sp. nov. shares its basis capitulum shape with the tuatara tick Archaeocroton sphenodonti (Dumbleton, 1943), the only extant member of this genus and an endemic species for New Zealand. The presence of 2 Australasian genera in Burmese amber is consistent with a previous record of an Ixodes Latreille, 1795 tick from this deposit which resembles Australian members of this genus. They further support an emerging hypothesis that fauna of the amber forest, which may have been on an island at the time of deposition, was at least partly Gondwanan in origin. A revised evolutionary tree for Ixodida is presented compiling data from several new Burmese amber ticks described in the last few years. Nuttalliellidae Acari; 1st Description; Ixodidae; Genus; List; Evolution; Parasitiformes; Redescription; Reevaluation; Ectoparasite http://creativecommons.org/licenses/by/4.0/ https://phaidra.vetmeduni.ac.at/api/object/o:3249/download 10.1017/S0031182022001585 https://phaidra.vetmeduni.ac.at/o:605 application/pdf Parasitology 150(2), 157-171 (2022) Parasitology 150 2 157 171 1.53 MB 2022