Journal of Paleontology, 94(4), 2020, p. 696–715 Copyright © 2020, The Paleontological Society. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/ licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. 0022-3360/20/1937-2337 doi: 10.1017/jpa.2020.13 New fossil stilt-legged mites of Neophyllobius Berlese, 1886 (Acariformes, Camerobiidae) from Eocene Baltic amber Mateusz Zmudzinski Department of Animal Morphology, Faculty of Biology, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland <
[email protected]> Abstract.—The fossil record of the family Camerobiidae has been represented by only one species, Neophyllobius suc- cineus Bolland and Magowski, 1990, described from Eocene Baltic amber. These prostigmatan mites are distinguishable by their distinctly long and slender stilt-like legs, and they are associated with aboveground vegetation where they hunt for other small invertebrates. This paper enhances the knowledge of fossil stilt-legged mites. Two new fossil species, N. electrus new species and N. glaesus new species, are described from samples of Baltic amber, and remarks on their morphology and taphonomy are provided. The discovery is complemented with a discussion on morphological sin- gularities (the shape of the prodorsum, the location of setae h1 and h2 in living specimens, and lengths of genual setae), an anomaly of hypertrophied seta (found in the N. glaesus holotype), and some biogeographical issues. UUID: http://zoobank.org/d1602384-ae4f-4f90-b4a1-6cdedd77c9e1 Introduction is essential for further paleoacarological studies (Sidorchuk, 2018).