# 2011 in arthropod paleontology

This list of fossil arthropods described in 2011 is a list of new taxa of trilobites, fossil insects, crustaceans, arachnids and other fossil arthropods of every kind that have been described during the year 2011. The list only includes taxa at the level of genus or species.

## Arachnids

| Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images |
| Acarus indicus | Sp. nov | Disputed | Kumar et al. | Early Permian | Manjir Formation | India | A mite. Originally described as a species of Acarus; Sidorchuk (2018) considered it more likely to be a misidentified immature nothrine oribatid mite (probably a member of the family Nothridae), and more likely to be a contaminant from the extant soil fauna rather than a genuine Paleozoic fossil. | |
| Ameticos | Gen. et sp. nov | | Garwood et al. | Carboniferous (late Stephanian) | | France | A member of Opiliones. The type species is A. scolos. | |
| Araneaovoius columbiae | Gen et comb nov | valid | Dunlop & Braddy | ?Ypresian | Quesnel ?Fraser Formation | Canada British Columbia | An orb-web spider egg sack ichnogenus. New ichnogenus for Aranea columbiae (Scudder 1878). | Araneaovoius columbiae (1890 illustration |
| Burmesiola | Gen. et sp. nov | Valid | Wunderlich | Late Cretaceous (Cenomanian) | Burmese amber | Myanmar | A tree trunk spider. Genus includes new species B. cretacea. | |
| Chaerilobuthus | Gen. et sp. nov | Valid | Lourenço & Beigel | Late Cretaceous (Cenomanian) | Burmese amber | Myanmar | A chaerilobuthid scorpion. The type species is C. complexus. | |
| Eoscaphiella | Gen. et sp. nov | Valid | Wunderlich | Late Cretaceous (Cenomanian) | Burmese amber | Myanmar | A member of the family Tetrablemmidae. Genus includes new species E. ohlhoffi. | |
| Episinus tibiaseta | Sp. nov | Valid | Wunderlich | Miocene | Dominican amber | Dominican Republic | A member of the family Theridiidae, a species of Episinus. | |
| Femurraptor | Gen. et sp. nov | Valid | Wunderlich | Miocene | Dominican amber | Dominican Republic | A member of the family Theridiidae. Genus includes new species F. dominicanus. | |
| Fictotama maculosa | Sp. nov | Valid | Wunderlich | Miocene | Dominican amber | Dominican Republic | A tree trunk spider. | |
| Glaesacarus | Gen. et comb. nov | Valid | Sidorchuk & Klimov | Eocene | Baltic amber | Europe (Baltic Sea region) | A mite; a new genus for "Acarus" rhombeus Koch & Berendt (1854) | |
| Jerseyuloborus | Gen. et sp. nov | Valid | Wunderlich | Late Cretaceous | New Jersey amber | United States | A member of the family Uloboridae. Genus includes new species J. longisoma. | |
| Macrogyion | Gen. et sp. nov | | Garwood et al. | Carboniferous (late Stephanian) | | France | A member of Opiliones. The type species is M. cronus. | |
| Nephila jurassica | sp nov | Objective synonym | Selden, Shih & Ren | Middle Jurassic | Jiulongshan Formation | China | largest fossil spider described. objective syn of Mongolarachne jurassica | Mongolarachne jurassic |
| Labidostomma paleoluteum | Sp. nov | Valid | Dunlop & Bertrand | Eocene | Baltic amber | Europe (Baltic Sea region) | A mite, a species of Labidostomma. | |
| Praeterleptoneta tibialis | Sp. nov | Valid | Wunderlich | Late Cretaceous (Cenomanian) | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Praeterleptonetidae. Originally described as a species of Praeterleptoneta, subsequently transferred to the separate genus Parvispina. | |
| Scopoides dominicanus | Sp. nov | Valid | Wunderlich | Miocene | Dominican amber | Dominican Republic | A ground spider, a species of Scopoides. | |
| Siro balticus | Sp. nov | Valid | Dunlop & Mitov | Eocene | Baltic amber | Europe (Baltic Sea region) | A member of Opiliones, a species of Siro. | |
| Spinocharinus | Gen. et sp. nov | Valid | Poschmann & Dunlop | Early Devonian | | Germany | A member of Trigonotarbida. The type species is S. steinmeyeri. | |

## Crustaceans

| Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images |
| Aenigmastacus | Gen et sp nov | valid | Feldmann, Schweitzer, & Leahy | Eocene Ypresian | Okanagan Highlands Tranquille Formation | Canada British Columbia | A parastacid freshwater crayfish | |
| Dynamenella miettoi | Sp. nov | Valid | De Angeli & Lovato | Eocene Lutetian | | Italy | An isopod belonging to the family Sphaeromatidae. | |

## Insects

| Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images |
| Agulla protomaculata | sp nov | jr synonym | Engel | Lutetian | Green River Formation | USA | A raphidiid snakefly. Moved to Archiinocellia protomaculata in 2021 | Archiinocellia protomaculata |
| Alicodoxa | Gen et sp nov | Valid | Emeljanov & Shcherbakov | late Eocene | Rovno amber | Ukraine | A planthopper, type species A. rasnitsyni also found in Baltic amber | Alicodoxa rasnitsyni |
| Anonychomyrma geinitzi | Comb nov | valid | (Mayr) | Lutetian | Baltic amber | Europe | Fossil Dolichoderin ant | Anonychomyrma geinitzi |
| Aradus andancensis | Sp nov | valid | Marchal, Guilbert, Brisac, & Nel | Turolian | Montagne d'Andance | France | A flat bug | Aradus andancensis |
| Archiaustroconops borkenti | Sp. nov | Valid | Pérez-de la Fuente et al. | Early Cretaceous (Albian) | El Soplao amber deposit | Spain | A fly belonging to the family Ceratopogonidae. | |
| Arostropsis | Gen et sp nov | valid | Yunakov & Kirejtshuk | Eocene | Baltic amber | Europe | Monotypic broad-nosed weevil genus, one species A. groehni | Arostropsis groehni |
| Astreptolabis | Subfam, Gen et sp nov | valid | Engel | Albian | Burmese amber | Myanmar | Monotypic earwig subfamily, one species A. ethirosomatia | Astreptolabis ethirosomatia |
| Atriculicoides szadziewskii | Sp. nov | Valid | Pérez-de la Fuente et al. | Early Cretaceous (Albian) | El Soplao amber deposit | Spain | A fly belonging to the family Ceratopogonidae. | |
| Baltimartyria rasnitsyni | sp nov | valid | Mey | Lutetian | Baltic amber | Europe | the second species in Baltimartyria | Baltimartyria rasnitsyni |
| Baryshnyala | Gen. et sp. nov | Valid | Ilger & Brauckmann | Late Carboniferous (early Bashkirian) | Ziegelschiefer Formation | Germany | A neopteran insect of uncertain systematic placement, assigned to the new family Baryshnyalidae. The type species is B. occulta. | Baryshnyala occulta |
| Ctenoplectrella phaeton | sp nov | Valid | Gonzalez & Engel | Lutetian | Baltic Amber | Europe | A leaf cutter bee | Ctenoplectrella |
| Dasyleptus triassicus | Sp. nov | Valid | Bechly & Stockar | Middle Triassic (Ladinian) | Meride Limestone | Switzerland | A member of Archaeognatha, a species of Dasyleptus. | |
| Deinodryinus velteni | sp nov | Valid | Guglielmino & Olmi | Lutetian | Baltic amber | Europe | A dryinid wasp. | Deinodryinus velteni |
| Diochus electrus | sp nov | valid | Chatzimanolis & Engel | Lutetian | Baltic amber | Europe | first valid Staphylininae species from the fossil record | Diochus electrus |
| Dryinus rasnitsyni | sp nov | valid | Olmi & Guglielmino | Burdigalian | Dominican amber | Dominican Republic | second fossil Dryinus lamellatus group species | Dryinus rasnitsyni |
| Eldermyrmex | Gen et comb nov | Valid | Heterick & Shattuck | Lutetian | Baltic amber | Russia | Fossil Dolichoderine ant, Type species "Iridomyrmex" oblongiceps | Eldermyrmex oblongiceps |
| Iberoraphidia | sp nov | valid | Jepsen, Ansorge, & Jarzembowski | Lower Barremian | Serra del Montsec | Spain | A mesoraphidiid snakefly, one species Iberoraphidia dividua | |
| Lebanoculicoides excantabris | Sp. nov | Valid | Pérez-de la Fuente et al. | Early Cretaceous (Albian) | El Soplao amber deposit | Spain | A fly belonging to the family Ceratopogonidae. | |
| Lebanoraphidia | sp nov | valid | Bechly & Wolf-Schwenninger | Upper Neocomian | Jezzine | Lebanon | A mesoraphidiid snakefly, one species Lebanoraphidia nana | |
| Leptolingia calonervis | sp. | Valid | Shi, Liu, & Ren | Middle Jurassic | Jiulongshan Formation | China | | |
| Leptolingia imminuta | sp. | Valid | Liu, Shi, & Ren | Middle Jurassic | Daohugou Beds | China | The smallest species known in the family Grammolingiidae | |
| Litholingia ptesa | sp. | Valid | Shi, Yang, & Ren | Middle Jurassic | Jiulongshan Formation | China | | |
| Mickoleitia longimanus | Ord., fam., gen. et sp. | valid | Staniczek, Bechly, & Godunko | Lower Cretaceous | Crato Formation | Brazil | A new genus in the new family Mickoleitiidae and a new insect order Coxoplectoptera. | Mickoleitia longimanus |
| Myanmymar | gen et sp nov | valid | Huber | Albian | Burmese amber | Myanmar | oldest mymarid described | Myanmymar aresconoides |
| Nanotermes | Gen et sp. nov | valid | Engel & Grimaldi | Ypresian | Cambay amber | India | A Termitid termite | Nanotermes isaacae |
| Ordralfabetix | gen et sp. | valid | Szwedo | Ypresian | Oise amber | France | Second fossil lophopid planthopper from Europe | Ordralfabetix sirophatanis |
| Parastylotermes krishnai | Sp. nov | valid | Engel & Grimaldi | Ypresian | Cambay amber | India | A Stylotermitid termite | Parastylotermes krishnai |
| Platyperla marquati | Species | Valid | Gallego et al. | Late Triassic | Potrerillos Formation | Argentina | A platyperlid stonefly, a species of Platyperla. | |
| Plumalexius | fam, gen et sp. | valid | Brothers | Turonian | New Jersey amber | USA | sister genus to Plumariidae | Plumalexius rasnitsyni |
| Pristomyrmex rasnitsyni | sp nov | valid | Dlussky & Radchenko | Late Eocene | Scandinavian amber | Denmark | A fossil ant | |
| Prostylotermes | Gen et sp. nov | valid | Engel & Grimaldi | Ypresian | Cambay amber | India | A Stylotermitid termite | Prostylotermes kamboja |
| Renphasma | Gen. et sp. | Valid | Nel & Delfosse | Early Cretaceous | Yixian Formation | China | A stick insect | Renphasma sinica |
| Termitaradus dominicanus | Sp nov | valid | Poinar | Burdigalian? | Dominican amber | Dominican Republic | A termitaphidid termite bug | |
| Titanomyrma lubei | Gen, sp, et comb nov. | valid | Archibald, Johnson, Mathewes, & Greenwood | Early Eocene | Messel shales | Germany | new genus for the largest known ants | Titanomyrma simillima |
| Tytthodiplatys | Gen et sp. nov | Valid | Engel | Albian | Burmese amber | Myanmar | Oldest member of the family Diplatyidae | Tytthodiplatys mecynocercus |
| Undulopsychopsis | Gen et sp. nov | Valid | Peng, Makarkin, Wang, & Ren | Lower Barremian to Upper Aptian | Yixian Formation | China | A psychopsid silky lacewing, only species U. alexi | Undulopsychopsis alexi |
| Vetuformosa | Sub. Fam., Gen., et Sp. Nov | valid | Poinar | Albian | Burmese amber | Myanmar | A baetid mayfly. The type species is V. buckleyi, type genus of subfamily Vetuformosinae | Vetuformosa buckleyi |
| Zophotermes | Gen et sp. nov | valid | Engel & Singh | Ypresian | Cambay amber | India | A Rhinotermitid termite | Zophotermes ashoki |

## Trilobites

| Name | Novelty | Status | Authors | Age | Unit | Location | Notes |
| Chasbellus | Gen. et 2 sp. nov | Valid | Loch & Taylor | Early Ordovician | Bliss Formation House Limestone Tanyard Formation Wilberns Formation | United States | A member of Asaphida belonging to the family Symphysurinidae. The type species is C. milleri; genus also includes C. repetskii. |
| Gladiatoria crowei | Sp. nov | Valid | Adrain, McAdams & Westrop | Ordovician (Floian) | Fillmore Limestone Garden City Formation | United States | A member of the family Bathyuridae. |
| Gladiatoria harrisi | Sp. nov | Valid | Adrain, McAdams & Westrop | Ordovician (Floian) | Fillmore Limestone | United States | A member of the family Bathyuridae. |
| Gladiatoria nielsenae | Sp. nov | Valid | Adrain, McAdams & Westrop | Ordovician (Floian) | Fillmore Limestone Garden City Formation | United States | A member of the family Bathyuridae. |
| Gladiatoria phoenixi | Sp. nov | Valid | Adrain, McAdams & Westrop | Ordovician (Floian) | Fillmore Limestone Garden City Formation | United States | A member of the family Bathyuridae. |
| Gladiatoria reedi | Sp. nov | Valid | Adrain, McAdams & Westrop | Ordovician (Floian) | Fillmore Limestone Garden City Formation | United States | A member of the family Bathyuridae. |
| Hebediscus williamsi | Sp. nov | Valid | Westrop & Landing | Early Cambrian | Brigus Formation | Canada | A member of the family Hebediscidae. |
| Hintzeia parafirmimarginis | Sp. nov | Valid | McAdams & Adrain | Ordovician (Floian) | Fillmore Limestone Garden City Formation | United States | A member of the family Pliomeridae. |
| Luhops coquus | Sp. nov | Valid | Rushton | Cambrian (Drumian) | Abbey Shale | United Kingdom | |
| Panisaspis | Gen. et 6 sp. et comb. nov | Valid | McAdams & Adrain | Early Ordovician | Fillmore Limestone Garden City Formation Yellow Hill Limestone | United States | A member of the family Pliomeridae. The type species is P. millardensis; genus also includes new species P. deltaensis, P. loganensis, P. rancherensis, P. sevierensis and P. topscityensis, as well as "Protopliomerops" quattuor Hintze (1953). |
| Protopliomerella bowlesi | Sp. nov | Valid | McAdams & Adrain | Ordovician (Floian) | Fillmore Limestone | United States | A member of the family Pliomeridae. |
| Protopliomerella kerouaci | Sp. nov | Valid | McAdams & Adrain | Ordovician (Floian) | Fillmore Limestone Garden City Formation Yellow Hill Limestone | United States | A member of the family Pliomeridae. |
| Protopliomerella okeeffeae | Sp. nov | Valid | McAdams & Adrain | Ordovician (Floian) | Fillmore Limestone Garden City Formation Yellow Hill Limestone | United States | A member of the family Pliomeridae. |
| Protopliomerella seegeri | Sp. nov | Valid | McAdams & Adrain | Ordovician (Floian) | Fillmore Limestone Garden City Formation | United States | A member of the family Pliomeridae. |
| Protopliomerella stegneri | Sp. nov | Valid | McAdams & Adrain | Ordovician (Floian) | Fillmore Limestone | United States | A member of the family Pliomeridae. |
| Psalikilopsis newmani | Sp. nov | Valid | Adrain et al. | Ordovician (Floian) | Fillmore Limestone | United States | A member of the family Bathyuridae. |
| Psalikilopsis paracuspidicauda | Sp. nov | Valid | Adrain et al. | Ordovician (Floian) | Fillmore Limestone Yellow Hill Limestone | United States | A member of the family Bathyuridae. |
| Psalikilopsis redfordi | Sp. nov | Valid | Adrain et al. | Ordovician (Floian) | Fillmore Limestone Garden City Formation | United States | A member of the family Bathyuridae. |
| Symphysurina ethingtoni | Sp. nov | Valid | Loch & Taylor | Late Cambrian and Early Ordovician | House Limestone | United States | A member of Asaphida belonging to the family Symphysurinidae. |
| Symphysurina straatmannae | Sp. nov | Valid | Loch & Taylor | Late Cambrian and Early Ordovician | Bliss Formation House Limestone Wilberns Formation | United States | A member of Asaphida belonging to the family Symphysurinidae. |