-83.92938, 9.696767: 10 Treatments

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Gymnopus foliiphilus subsp. var. var. costaricensis   var. nov.  Petersen, Ronald H. & Hughes, Karen W., 2016, Micromphale sect. Perforantia (Agaricales, Basidiomycetes); Expansion and phylogenetic placement, MycoKeys 18, pp. 1-122 : 27-30 27-30
Embates uniformis   sp. nov.  Prena, Jens, 2005, The Middle American species of Embates Chevrolat (Coleoptera: Curculionidae: Baridinae), Zootaxa 1100 (1), pp. 1-151 : 1-151 1-151
Coniceromyia truncata     Ament, Danilo César & Amorim, Dalton De Souza, 2016, Taxonomic revision of Coniceromyia Borgmeier (Diptera: Phoridae), with the description of three new species from Brazil, Zootaxa 4086 (1), pp. 1-87 : 58 58
Costarina chonta   sp. nov.  Platnick, Norman I., Berniker, Lily & Víquez, Carlos, 2014, The Goblin Spider Genus Costarina (Araneae, Oonopidae), Part 2: the Costa Rican fauna, American Museum Novitates 2014 (3794), pp. 1-76 : 66-67 66-67
Phyllocnistis drimiphaga   sp. nov.  Kawahara, Akito Y., Nishida, Kenji & Davis, Donald R., 2009, Systematics, host plants, and life histories of three new Phyllocnistis species from the central highlands of Costa Rica (Lepidoptera, Gracillariidae, Phyllocnistinae), ZooKeys 27 (27), pp. 7-30 : 12-17 12-17
Blepharoneura macwilliamsae   sp. nov.  Norrbom, Allen L. & Condon, Marty, 2010, Revision of the femoralis group of Blepharoneura Loew (Diptera: Tephritidae) 2374, Zootaxa 2374 (1), pp. 1-139 : 79-81 79-81
Lepanthes bogariniana   sp. nov.  Pupulin, Franco, 2021, A correction to the Lepanthes guatemalensis group (Orchidaceae: Pleurothallidinae) in Costa Rica, with a new species, Phytotaxa 480 (1), pp. 69-78 : 72-74 72-74
Stenus irazumontis     Puthz, V., 2014, Neue und alte neotropische Stenus-Arten (Coleoptera, Staphylinidae) 339. Beitrag zur Kenntnis der Steninen, Linzer biologische Beiträge 46 (2), pp. 1671-1736 : 1693 1693
Stenus fuscatus   sp. nov.  Puthz, V., 2014, Neue und alte neotropische Stenus-Arten (Coleoptera, Staphylinidae) 339. Beitrag zur Kenntnis der Steninen, Linzer biologische Beiträge 46 (2), pp. 1671-1736 : 1674-1675 1674-1675
Oosternum simplex   sp. nov.  Fikáček, Martin & Hebauer, Franz, 2009, Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group, Acta Entomologica Musei Nationalis Pragae 49 (1), pp. 103-117 : 112-115 112-115