APPENDIX 1 LIST OF TYPES BORROWED FROM DIFFERENT INSTITUTIONS Here is the list of types examined (with their original name) from various institutions, including synonymies (names in bold are the holotype names which are still valid) and new combinations: - Smithsonian Institution, Washington: - Atomaria aleutica Casey - Atomaria brevicollis Casey - Atomaria divisa Casey = Atomaria (Anchicera) distincta Casey, n. syn. - Atomaria crypta Casey = Atomaria (Anchicera) fuscata Schöenherr, n. syn. - Atomaria pumilio Casey = Atomaria (Anchicera) lewisi Reitter, n. syn - Atomaria ebenina Casey = Atomaria (Anchicera) morio Kolenati, n. syn - Atomaria fallax Casey = Atomaria (Anchicera) pusilla (Paykull), n. syn - Atomaria gilvipennis Casey - Atomaria gonodera Casey = Atomaria (Anchicera) fuscata Schöenherr, n. syn. - Atomaria incerta Casey = Atomaria (Anchicera) fuscata Schöenherr, n. syn. - Atomaria inepta Casey - Atomaria nanula Casey = Atomaria (Anchicera) turgida Erichson, n. syn. - Atomaria nebulosa Casey = Atomaria (Anchicera) apicalis Erichson, n. syn. - Atomaria nubipennis Casey - Atomaria oblongula Casey - Atomaria lacustris Casey = Atomaria (Anchicera) fuscata Schöenherr, n. syn. - Atomaria pennsylvanica Casey = Atomaria (Anchicera) fuscata Schöenherr, syn. - Atomaria postpallens Casey - Atomaria riparia Casey = Atomaria (Anchicera) fuscata Schöenherr, n. syn. - Atomaria subalutacea Casey = Atomaria (Anchicera) fuscata Schöenherr, n. syn. - Agathengis capitata Casey = Atomaria (Atomaria) capitata (Casey). - Agathengis carinula Casey = Atomaria (Atomaria) neocarinula, repl. name - Agathengis castanea Casey = Atomaria (Atomaria) undulata (Casey), n. syn. - Agathengis coloradensis Casey = Atomaria (Atomaria) coloradensis. - Agathengis constricta Casey = Atomaria (Atomaria) constricta. - Agathengis crassula Casey = Atomaria (Atomaria) crassula. - Agathengis cribripennis Casey = Atomaria (Atomaria) undulata, n. syn. - Agathengis dispersa Casey = Atomaria (Atomaria) dispersa. - Agathengis forticornis Casey = Atomaria (Atomaria) forticornis. - Agathengis longipennis Casey = Atomaria (Atomaria) longipennis. - Agathengis lucida Casey = Atomaria (Atomaria) nigrirostris, n. syn. - Agathengis luculenta Casey = Atomaria (Atomaria) nigrirostris, n. syn. - Agathengis macer Casey = Atomaria (Atomaria) macra. - Agathengis melas Casey = Atomaria (Atomaria) tenebrosa, n. syn. - Agathengis nigricollis Casey = Atomaria (Atomaria) nigricollis. - Agathengis ochronitens Casey = Atomaria (Atomaria) stricticollis, n. syn. - Agathengis parvicollis Casey = Atomaria (Atomaria) nigricollis, n. syn. - Agathengis patens Casey = Atomaria (Atomaria) patens. - Agathengis puella Casey = Atomaria (Atomaria) puella. - Agathengis pumilio Casey = Atomaria (Atomaria) pumilio. - Agathengis quadricollis Casey = Atomaria (Atomaria) quadricollis. - Agathengis stricticollis Casey = Atomaria (Atomaria) stricticollis. - Agathengis subdentata Casey = Atomaria (Atomaria) subdentata. - Agathengis subnitens Casey = Atomaria (Atomaria) nigrirostris, syn. - Agathengis subrecta Casey = Atomaria (Atomaria) subrecta. - Agathengis tenebrosa Casey = Atomaria (Atomaria) tenebrosa. - Agathengis undulata Casey = Atomaria (Atomaria) undulata. - Agathengis soror Casey = Atomaria (Atomaria) versa, syn. - Antherophagus oregonus Casey = Antherophagus ochraceus, syn. - Caenoscelis angusticollis Casey = Caenoscelis parallela, n. syn. - Caenoscelis basalis Casey - Caenoscelis elongata Casey = Caenoscelis basalis, n. syn. - Caenoscelis macilenta Casey = Caenoscelis subdeplanata, n. syn. - Caenoscelis macra Casey = Caenoscelis basalis, n. syn. - Caenoscelis obscura Casey = Caenoscelis cryptophaga, n. syn. - Caenoscelis ochreosa Casey = Caenoscelis ferruginea, n. syn. - Caenoscelis ovipennis Casey = Caenoscelis basalis, n. syn. - Caenoscelis parallela Casey - Caenoscelis shastanica Casey = Caenoscelis parallela, n. syn. - Caenoscelis subfuscata Casey = Caenoscelis cryptophaga, n. syn. - Macrodea antennalis Casey = Caenoscelis antennalis. - Cryptophagus nodifer Casey = Cryptophagus croceus, syn. - Cryptophagus amputatus Casey = Cryptophagus croceus, syn. - Cryptophagus laticlavus Casey = Cryptophagus croceus, syn. - Cryptophagus densicollis Casey = Cryptophagus croceus, syn. - Cryptophagus discedens Casey - Cryptophagus fumidulus Casey - Cryptophagus hebes Casey - Cryptophagus histricus Casey - Cryptophagus porrectus Casey - Cryptophagus valens Casey - Ephistemus cactophilus Casey - Ephistemus perminutus Casey = Curelius japonicus, n. syn. - Hypocoprus tenuis Casey = Hypocoprus latridioides, syn. - Parephistemus ocularis Casey = Triachus atomus (Chrysomelidae), syn. - Pteryngium malacum Casey = Pteryngium crenulatum, syn. - Salebius lictor Casey = Salebius octodentatus, n. syn. - Salebius montanus Casey = Salebius octodentatus, n. syn. - Salebius minax Casey - Salebius tarsalis Casey = Salebius octodentatus, n. syn. - Tisactia subglabra Casey - American Museum of Natural History: - Agathengis lineola Notman = Atomaria (Atomaria) lineola. - Atomaria parviceps Notman - Field Museum of Natural History : - Glyptophorus mycetoecus Park = Henoticus pilifer, n. syn. APPENDIX 2 LIST OF SPECIES BORROWED FROM THE MANCHESTER UNIVERSITY MUSEUM AND THE FINNISH MUSEUM OF NATURAL HISTORY We contacted the Manchester University Museum, where most of the specimens of Colin Johnson have been preserved. It holds one of the largest collections of Cryptophagidae in the world. We borrowed representatives of 50 widely distributed or northern Palaearctic species from that collection. All those species were photographed and carefully examined to compare them with North American specimens. Here is the list of species borrowed from the Manchester University Museum (all species in bold have been recorded in North America): - Cryptophagus cylindrellus Johnson - Cryptophagus denticulatus Heer - Cryptophagus fasciatus Kraatz - Cryptophagus intermedius Bruce - Cryptophagus jakowlewi Reitter (confused with C. confertus in Bousquet et al. (2013)) - Cryptophagus labilis Erichson - Cryptophagus lapponicus Gyllenhal - Cryptophagus montanus Brisout de Barneville - Cryptophagus parallelus Brisout de Barneville - Cryptophagus populi Paykull - Cryptophagus quadrihamatus Mäklin - Cryptophagus ruficornis Stephens - Cryptophagus schmidtii Sturm - Cryptophagus uncinatus Stephens - Atomaria (Anchicera) fulvipennis Mannerheim - Atomaria (Anchicera) fuscipes Gyllenhal - Atomaria (Anchicera) hislopi Wollaston - Atomaria (Anchicera) lederi Johnson - Atomaria (Anchicera) lundbergi Johnson - Atomaria (Anchicera) mongolica Johnson - Atomaria (Anchicera) morio Kolenati - Atomaria (Anchicera) munda Erichson - Atomaria (Anchicera) nigripennis Kugeland - Atomaria (Anchicera) nitidula Marsham - Atomaria (Anchicera) ornata Heer - Atomaria (Anchicera) peltataeformis Sjöberg - Atomaria (Anchicera) pseudatra Reitter - Atomaria (Anchicera) rhenonum Kraatz - Atomaria (Anchicera) rubricollis Brisout de Barneville - Atomaria (Anchicera) turgida Erichson - Atomaria (Atomaria) affinis Sahlberg - Atomaria (Atomaria) alpina Heer - Atomaria (Atomaria) badia Erichson = mislabeled as Atomaria vespertina - Atomaria (Atomaria) bella Reitter - Atomaria (Atomaria) diluta Erichson - Atomaria (Atomaria) fimetarii (Fabricius) - Atomaria (Atomaria) lapponica Johnson - Atomaria (Atomaria) longicornis Thomson - Atomaria (Atomaria) sparreschneideri Munster - Atomaria (Atomaria) strandi Johnson = Atomaria (Atomaria) coloradensis (Casey), n. syn. - Atomaria (Atomaria) subangulata Sahlberg = Atomaria (Atomaria) subdentata (Casey), n. syn. - Atomaria (Atomaria) umbrina Gyllenhal - Atomaria (Atomaria) vespertina Mäklin = mislabeled as Atomaria pulchra - Atomaria (Atomaria) wollastoni Sharp (erroneously recorded in North America) The following species were borrowed from Finnish Museum of Natural History, Helsinki, Finland, to compare them with northern Canadian species: - Cryptophagus bidentatus Mäklin - Atomaria (Anchicera) kamtschatica Motschulski - Atomaria (Anchicera) scutellaris Newman - Atomaria (Atomaria) atrata Reitter APPENDIX 3 LIST OF SPECIES HIGH-RESOLUTION IMAGES OF PALAEARCTIC CRYPTOPHAGIDAE BORROWED FROM LECH BOROWIEC We also contacted Lech Borowiec from Poland, responsible for the largest website on Middle European Coleoptera (Borowiec, 2018), who sent us many high resolution images of Cryptophagus and Atomaria, many of which are included in this publication. All identifications of those images were confirmed by Colin Johnson. Finally, we compared images (including a few species in other genera) of the following Palearctic species with North American species (all species in bold have been recorded in North America): - Caenoscelis sibirica Reitter - Caenoscelis subdeplanata Brisout de Barneville - Antherophagus pallens (Linnaeus) - Antherophagus silaceus (Herbst) - Antherophagus similis Curtis - Cryptophagus badius Sturm - Cryptophagus confusus Bruce - Cryptophagus dentatus Reitter - Cryptophagus distinguendus (Herbst) - Cryptophagus dorsalis Sahlberg - Cryptophagus fuscicornis Sturm - Cryptophagus laticollis Lucas - Cryptophagus lycoperdi (Scopoli) - Cryptophagus micaceus Rey - Cryptophagus pallidus Sturm - Cryptophagus pubescens Sturm - Cryptophagus punctipennis Brisout de Barneville (recorded as Cryptophagus pilosus) - Cryptophagus quercinus Kraatz - Cryptophagus saginatus Sturm - Cryptophagus scanicus (Linnaeus) - Cryptophagus schmidtii Sturm - Cryptophagus scutellatus Newman - Cryptophagus subdepressus Gyllenhal - Henoticus serratus Gyllenhal - Telmatophilus