-83.86, 10.2: 13 Treatments

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Miconia magnifolia   nom. nov.  Gamba, Diana & Almeda, Frank, 2014, Systematics of the Octopleura Clade of Miconia (Melastomataceae: Miconieae) in Tropical America, Phytotaxa 179 (1), pp. 1-174 : 91-95 91-95
Croton billbergianus     Caruzo, Maria Beatriz Rossi & Cordeiro, Inês, 2013, Taxonomic revision of Croton section Cleodora (Euphorbiaceae), Phytotaxa 121 (1), pp. 1-41 : 21 21
Miconia radicans     Gamba, Diana & Almeda, Frank, 2014, Systematics of the Octopleura Clade of Miconia (Melastomataceae: Miconieae) in Tropical America, Phytotaxa 179 (1), pp. 1-174 : 114-117 114-117
Schizoptera (Odontorhagus) aspera   n. sp.  Leon, Stephanie & Weirauch, Christiane, 2016, Scratching the surface? Taxonomic revision of the subgenus Schizoptera (Odontorhagus) reveals vast undocumented biodiversity in the largest litter bug genus Schizoptera Fieber (Hemiptera: Dipsocoromorpha), Zootaxa 4184 (2), pp. 255-284 : 264-265 264-265
Meganannus lewisi   sp. n.  Weirauch, Christiane, Whorrall, Kyle, Knyshov, Alexander & Hoey-Chamberlain, Rochelle, 2018, Giant among dwarfs: Meganannus lewisi, gen. n. and sp. n., a new genus and species of minute litter bugs from Costa Rica (Hemiptera: Schizopteridae), Zootaxa 4370 (2), pp. 156-170 : 163-165 163-165
Specklinia spectabilis   comb. nov.  Pupulin, Franco, Karremans, Adam P. & Gravendeel, Barbara, 2012, A reconsideration of the empusellous species of Specklinia (Orchidaceae: Pleurothallidinae) in Costa Rica, Phytotaxa 63 (1), pp. 1-20 : 15-18 15-18
Azotoctla punctata     Cardona-Duque, Juliana & Franz, Nico M., 2012, Description and phylogeny of a new Neotropical genus of Acalyptini (Coleoptera: Curculionidae: Curculioninae) associated with the staminodes of Cyclanthaceae, Zoological Journal of the Linnean Society 166 (3), pp. 559-623 : 577-581 577-581
Guapinannus falcis   sp. n.  Frankenberg, Sarah, Knyshov, Alexander, Hoey-Chamberlain, Rochelle & Weirauch, Christiane, 2021, Taxonomic revision of Guapinannus Wygodzinsky, 1951 (Hemiptera: Schizopteridae), with description of 19 new species, Zootaxa 4958 (1), pp. 261-286 : 272 272
Myrmelachista plebecula     Longino, J. T., 2006, A taxonomic review of the genus Myrmelachista (Hymenoptera: Formicidae) in Costa Rica., Zootaxa 1141, pp. 1-54 : 43-46 43-46
Myrmelachista longiceps   NEW SPECIES  Longino, J. T., 2006, A taxonomic review of the genus Myrmelachista (Hymenoptera: Formicidae) in Costa Rica., Zootaxa 1141, pp. 1-54 : 33-36 33-36
Neopleurophora prionotopyga   sp. nov.  Ament, Danilo Cesar & Amorim, Dalton De Souza, 2013, Taxonomic revision of the genus Neopleurophora Brown (Diptera: Phoridae), with the description of thirty seven new species, Zootaxa 3657 (1), pp. 1-93 : 17 17
Coniceromyia impluvia     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 : 37 37
Macgrathphora caribbea   new species  Brown, Brian V., 2022, Two new genera of phorid flies, Macgrathphora and Aurisetiphora, from Costa Rica (Diptera: Phoridae), with recommendations for naming new genera in the family, Zootaxa 5115 (4), pp. 571-581 : 574-575 574-575