-85.5, 10.96: 15 Treatments

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Mortoniella papillata   sp. nov.  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 : 44-45 44-45
Polyplectropus yolandae     Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252 : 220-221 220-221
Azteca nanogyna   new species  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 : 57 57
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
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
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
Argia calverti   sp. nov.  Garrison, Rosser W. & Ellenrieder, Natalia Von, 2017, New species of the damselfly genus Argia from Mexico, Central America and Ecuador with an emphasis on Costa Rica (Insecta: Odonata: Coenagrionidae), Zootaxa 4235 (1), pp. 1-93 : 6-10 6-10
Hyphantrophaga virilis     Fleming, AJ, Wood, D. Monty, Smith, M. Alex, Dapkey, Tanya, Hallwachs, Winnie & Janzen, Daniel, 2019, Twenty-two new species in the genus Hyphantrophaga Townsend (Diptera: Tachinidae) from Area de Conservacion Guanacaste, with a key to the species of Mesoamerica, Biodiversity Data Journal 7, pp. 29553-29553 : 29553 29553
Heteropteron kidonoi   sp. nov.  Dabek, Elizabeth Zhu, Whitfield, James B., Hallwachs, Winifred & Janzen, Daniel H., 2020, Two new reared species of Heteropteron Brulle (Hymenoptera, Braconidae, Cardiochilinae) from northwest Costa Rica, with the first definitive host records for the genus, Journal of Hymenoptera Research 77, pp. 151-165 : 151 151
Triaenodes delicatus     Holzenthal, Ralph W. & Contents, Trond Andersen Table Of, 2004, The caddisfly genus Triaenodes in the Neotropics (Trichoptera: Leptoceridae), Zootaxa 511 (1), pp. 1-80 : 20-23 20-23
Mortoniella rodmani   sp. nov.  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 : 52-54 52-54
Glyptapanteles bobkulai     Arias-Penna, Diana Carolina, Whitfield, James B., Janzen, Daniel H., Winifred Hallwachs,, Dyer, Lee A., Smith, M. Alex, Hebert, Paul D. N. & Fernandez-Triana, Jose L., 2019, A species-level taxonomic review and host associations of Glyptapanteles (Hymenoptera, Braconidae, Microgastrinae) with an emphasis on 136 new reared species from Costa Rica and Ecuador, ZooKeys 890, pp. 1-685 : 1 1
Mortoniella sicula   sp. nov.  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 : 56-58 56-58
Belvosia gloriasihezarae   sp. nov.  Fleming, AJ, Woodley, Norman, Smith, M. Alex, Hallwachs, Winnie & Janzen, Daniel H, 2023, Revision of Belvosia Robineau-Desvoidy (Diptera, Tachinidae) and 33 new species from Area de Conservacion Guanacaste in northwestern Costa Rica with a key to known North and Mesoamerican species, Biodiversity Data Journal 11, pp. 103667-103667 : 103667 103667
Phylloicus aeneus     PRATHER, AYSHA L., 2003, Revision of the Neotropical caddisfly genus Phylloicus (Trichoptera: Calamoceratidae), Zootaxa 275 (1), pp. 1-214 : 21-26 21-26