2021 in arthropod paleontology is a list of new arthropod fossil taxa, including arachnids, crustaceans, insects, trilobites, and other arthropods that were announced or described, as well as other significant arthropod paleontological discoveries and events which occurred in 2021.
Arachnids New taxa NameNoveltyStatusAuthorsAgeType localityLocationNotesImagesAllochthonius balticusSp. novIn pressSchwarze et al.EoceneBaltic amberEurope (Baltic Sea region)A pseudoscorpion belonging to the family Pseudotyrannochthoniidae.AlterphyxioschemoidesGen. et sp. novValidWunderlich & MüllerCretaceousBurmese amberPossibly a member of the family Dipluridae. The type species is A. spicula.AlticoronaGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA member of the family Tetrablemmidae. The type species is A. plenfemur.Autotomiana brevisetosaSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA member of Araneomorphae belonging to the family Pholcochyroceridae.Barbutia theroniSp. novValidKhaustov et al.Late EoceneRovno amberA mite belonging to the group Raphignathoidea and the family Barbutiidae.BoavistaGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the family Uloboridae. The type species is B. crassifemora.Burmadictyna crassembolusSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Deinopoidea and the family Salticoididae.Burmadictyna fissuraSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Deinopoidea and the family Salticoididae.Burmadictyna similisSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Deinopoidea and the family Salticoididae.BurmaspiralisGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Araneoidea and the family Zarqaraneidae. The type species is B. trispinae.BurmesianaNom. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the family Nemesiidae; a replacement name for Burmesia Wunderlich (2020).Burmorchestina boSp. novValidJiang & Li in Xin et al.CretaceousBurmese amberA spider belonging to the family Oonopidae.Burmorchestina convexaSp. novValidJiang & Li in Xin et al.CretaceousBurmese amberA spider belonging to the family Oonopidae.Burmorsolus longitibiaSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA member of Araneomorphae belonging to the family Burmorsolidae.Centrochthonius bitterfeldicusSp. novIn pressSchwarze et al.EoceneBitterfeld amberA pseudoscorpion belonging to the family Pseudotyrannochthoniidae.Chaerilobuthus meggeriSp. novValidLourenço in Lourenço & VeltenCretaceousBurmese amberA scorpion belonging to family Chaerilobuthidae.CornutheridionGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the family Theridiidae. The type species is C. concavum.CrassicephalusGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Deinopoidea and the new family Crassicephalidae. The type species is C. parvibulbus.Crassitibia siciliculaSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Araneoidea and the family Zarqaraneidae.CretaceousopisthacanthusGen. et sp. novValidLourenço in Lourenço & VeltenCretaceousBurmese amberA scorpion belonging to the family Protoischnuridae. The type species is C. smeelei.CretapalpusGen. et sp. novValidDownen & SeldenEarly CretaceousCrato FormationA spider belonging to the family Palpimanidae. Genus includes new species C. vittari.Dolichocybe elongataSp. novValidKhaustov et al.Late EoceneRovno amberA mite belonging to the group Heterostigmata and the family Dolichocybidae.DubiodeinopsisGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Deinopoidea and the new family Dubiodeinopsidae. The type species is D. spinifemora.DubiouloborixGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Deinopoidea and the new family Dubiouloboridae. The type species is D. incompletus.DubiouloborusGen. et 2 sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Deinopoidea and the new family Dubiouloboridae. The type species is D. praeta; genus also includes D. procerembolus.Electroblemma spermaferensSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA member of the family Tetrablemmidae.EoagelenomorphusGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider of uncertain phylogenetic placement, possibly a member of an early branch of the RTA clade. The type species is E. cretaceus.Furcembolus chuandianiSp. novValidJiang & Li in Xin et al.Late CretaceousBurmese amberA spider belonging to the family Pacullidae.Furcembolus fengzheniSp. novValidJiang & Li in Xin et al.Late CretaceousBurmese amberA spider belonging to the family Pacullidae.Furcembolus martensiSp. novValidJiang & Li in Xin et al.Late CretaceousBurmese amberA spider belonging to the family Pacullidae.HiatomegopsGen. et sp. novValidGuo, Selden & RenCretaceousBurmese amberA spider belonging to the family Lagonomegopidae. Genus includes new species H. spinalis.Hoplocheylus neosimilisSp. novValidKhaustov et al.Late EoceneRovno amberA mite belonging to the group Heterostigmata and the family Tarsocheylidae.HungarosiliaGen. et sp. novIn pressSzabó et al.Late Cretaceous (Santonian)Ajka Coal FormationA spider belonging to the family Hersiliidae. Genus includes new species H. verdesi.KachinarachneGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA member of Araneomorphae belonging to the family Pholcochyroceridae. The type species is K. oblonga.LevantoglyphusGen. et sp. novValidKlimov et al.Early Cretaceous (Barremian)Lebanese amberA mite belonging to the group Astigmata. The type species is L. sidorchukae.Liacarus (Procorynetes) shtanchaevaeSp. novIn pressArillo & Subías in Arillo, Subías & Álvarez-ParraEarly Cretaceous (Albian)Escucha FormationA mite belonging to the family Liacaridae.Longissipalpus cochleaSp. novJunior homonymWunderlich in Wunderlich & MüllerCretaceousBurmese amberA member of Araneomorphae belonging to the family Pholcochyroceridae. The specific name is preoccupied Longissipalpus cochlea Wunderlich (2017). Wunderlich (2022) coined a replacement name Longissipalpus aliter.Longissipalpus impudicusSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA member of Araneomorphae belonging to the family Pholcochyroceridae.MegasetaeGen. et sp. novValidWunderlich & MüllerCretaceousBurmese amberA member of Araneomorphae belonging to the new family Megasetidae. The type species is M. colphepeiroides.Metaphalangium martensiSp. novValidMitov, Perkovsky & DunlopEoceneRovno amberA harvestman, a species of Metaphalangium.Micropalpimanus gibberSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the group Palpimanoidea and the family Micropalpimanidae.MicrotheridionGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the family Theridiidae. The type species is M. longissispinae.Microuloborus oblongusSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the family Uloboridae.NeoveteratorNom. novCeccolini & CianferoniMioceneMexican amberA spider belonging to the family Trochanteriidae; a replacement name for Veterator Petrunkevitch (1963).Orchestina globusSp. novValidJiang & Li in Xin et al.CretaceousBurmese amberA spider belonging to the family Oonopidae, a species of Orchestina.PalaeodiplothrombidiumGen. et sp. novIn pressRivas & VegaMioceneMexican amberA mite belonging to the family Johnstonianidae. The type species is P. microscutum.Palaeoleptoneta fissuraSp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the family Leptonetidae.Palaeothele onoiSp. novValidSeldenCarboniferous (Moscovian)Mazon Creek fossil beds()A spider belonging to the group Mesothelae and to the new family Palaeothelidae.PalaeozearchaeaGen. et sp. novValidWunderlich in Wunderlich & MüllerCretaceousBurmese amberA spider belonging to the family Mecysmaucheniidae. The type species is P. depressa.Paradactylidium sineunguisSp. novValidKhaustov et al.Late EoceneRovno amberA mite belonging to the group Heterostigmata and the family Acarophenacidae.ParahistricostomaGen. et comb. novValidMitov, Perkovsky & DunlopEoceneBaltic amber Bitterfeld amber