-84.95, 10.5: 10 Treatments

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Myrmelachista flavocotea   NEW SPECIES  Longino, J. T., 2006, A taxonomic review of the genus Myrmelachista (Hymenoptera: Formicidae) in Costa Rica., Zootaxa 1141, pp. 1-54 : 17-19 17-19
Cordiluroides Listrata     LÖWENBERG-NETO, PETER & DE CARVALHO, CLAUDIO J. B., 2013, Muscidae (Insecta: Diptera) of Latin America and the Caribbean: geographic distribution and check-list by country, Zootaxa 3650 (1), pp. 1-147 : 108 108
Azteca pittieri     Longino, J. T., 2007, A taxonomic review of the genus Azteca (Hymenoptera: Formicidae) in Costa Rica and a global revision of the aurita group., Zootaxa 1491, pp. 1-63 : 43-45 43-45
Mortoniella meralda   new combination  Blahnik, Roger J. & Holzenthal, Ralph W., 2008, Revision of the Mexican and Central American species of Mortoniella (Trichoptera: Glossosomatidae: Protoptilinae), Zootaxa 1711 (1), pp. 1-72 : 31-34 31-34
Protoptila jolandae   new species  Holzenthal, Ralph W. & Blahnik, Roger J., 2006, The caddisfly genus Protoptila in Costa Rica (Trichoptera: Glossosomatidae), Zootaxa 1197, pp. 1-37 : 19-24 19-24
Miconia albertobrenesii   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 : 41-46 41-46
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
Protium brenesii   comb. nov.  Santamaria-Aguilar, Daniel & Lagomarsino, Laura P., 2017, Two new species and a new combination in Protium (Burseraceae) from Costa Rica, PhytoKeys 76, pp. 89-113 : 102-106 102-106
Ummidia varablanca   sp. nov.  Godwin, Rebecca L. & Bond, Jason E., 2021, Taxonomic revision of the New World members of the trapdoor spider genus Ummidia Thorell (Araneae, Mygalomorphae, Halonoproctidae), ZooKeys 1027, pp. 1-165 : 1 1
Xylocopa (Neoxylocopa) nautlana     Mérida-Rivas, Jorge A., Hinojosa-Díaz, Ismael A., Ayala-Barajas, Ricardo, Pozo, Carmen & Vandame, Rémy, 2022, Revision of carpenter bees of the subgenus Neoxylocopa Michener (Hymenoptera: Apidae) from Mexico and Mesoamerica, Zootaxa 5158 (1), pp. 1-67 : 22-26 22-26