1994

• Willmott, K.R.; Hall, J.P.W. 1994. Four new species of Riodinids from western Ecuador (Lepidoptera: Riodinidae). Tropical lepidoptera 5(2): 87-91. Full PDF. Reference page. 

1995

• Hall, J.P.W. & Willmott, K.R., 1995. Two new species of Adelpha from eastern Ecuador (Lepidoptera: Nymphalidae). Tropical Lepidoptera 6 (2): 106–109. Full article: . Reference page. 

• Hall, J.P.W. & Willmott, K.R. 1995a: Notes on the genus Argyrogrammana, with descriptions of five new species (Lepidoptera: Riodinidae). Tropical lepidoptera 6(2): 136–143. Full article (pdf). Reference page. 

• Hall, J.P.W. & K.R. Willmott, 1995b. Five new species and a new genus of riodinid from the cloud forests of eastern Ecuador (Lepidoptera: Riodinidae). Tropical Lepidoptera Research 6(2): 131–135. Full article: PDF. Reference page. 

• Hall, J.P.W. & Willmott, K.R. 1995c. Two new species of Mesene from western Ecuador (Lepidoptera: Riodinidae). Tropical Lepidoptera 6(2): 110-112. PDF. Reference page. .

• Hall, J.P.W. & Willmott, K.R. 1995d. Two new species of satyrines from Ecuador (Nymphalidae: Satyrinae). Tropical Lepidoptera 6(2): 103-105. PDF. Reference page. 

1996

• Hall, J.P.W. & Willmott, K.R. 1996. Systematics of the riodinid tribe Symmachiini, with the description of a new genus and five new species from Ecuador, Venezuela and Brazil (Lepidoptera: Riodinidae). Lambillionea 96(4): 637–660. PDFa PDFb Reference page. 

• Hall, J.P.W. & Willmott, K.R. 1996. The genus Theope: four new species and a new subspecies (Lepidoptera: Riodinidae). Tropical lepidoptera 7(1): 63–67. Abstract (pdf). Reference page. 

• Hall, J.P.W. & Willmott, K.R., 1996. Notes on the genus Argyrogrammana. Part 2, with one new species (Lepidoptera: Riodinidae). Tropical Lepidoptera 7 (1): 71–80. Abstract: . Reference page. 

• Torres-Núñez, R., Hall, J.P.W., Willmott, K.R. & Johnson, K. 1996. A new genus of Elfin butterflies from the northern high Andes (Lepidoptera: Lycaenidae). Tropical lepidoptera 7(1): 81–86. Full article (PDF).Reference page. 

1998

• Hall, J.P.W.; Willmott, K.R. 1998: Four new Riodinid species from eastern Ecuador (Lepidoptera: Riodinidae). Lambillionea 98(3): 325–334. Full article Reference page. 

• Hall, J.P.W. & Willmott, K.R. 1998. Nine new species and one new subspecies of Euselasia from Ecuador (Lepidoptera: Riodinidae). Tropical lepidoptera 9 supplement 1: 27–35. full article (pdf). Reference page. 

1999

• Pyrcz, T.W., Willmott, K.R. & Hall, J.P.W., 1999: Contribution to the knowledge of Ecuadorian Pronophilini, Part III. Three new species and five new subspecies of Lymanopoda (Lepidoptera: Nymphalidae: Satyrinae). Genus 10(3): 497-522. full article (pdf)Reference page. 

2001

• Willmott, K.R., Hall, J.P.W. & Lamas, G., 2001. Systematic Entomology 26: 369–399. PDF Reference page. 

2005

• Hall, J.P.W.; Willmott, K.R., Busby, R.C. 2005: Five new Penaincisalia species (Lepidoptera: Lycaenidae: Eumaeini) from the Andes of southern Ecuador and northern Peru. Zootaxa 797: 1–20. Abstract & excerpt Reference page. 

• Hall, J. & Willmott, 2005. A New Species of Paiwarria (Lepidoptera: Lycaenidae: Eumaeini) from Western Ecuador. Proceedings of the Entomological Society of Washington 107 (4): 960–967. BHL. Reference page. 

2007

• Hall & Willmott, [2007]. Four new species of Symmachiini from Ecuador (Lepidoptera: Riodinidae). Tropical Lepidoptera 16 (1-2): 1–5. PDF. Reference page. 

2015

• Nakahara, S., Hall, J.P.W., Lamas, G. & Willmott, K.R. 2015. Seven new species and one new subspecies of Euptychia Hübner, 1818 (Lepidoptera: Nymphalidae: Satyrinae) from the tropical Andes. Tropical Lepidoptera Research 25(2): 63–79. Reference page. 

• Willmott, K.R. 2015. A new subspecies of Cithaerias pyropina (Salvin & Godman, 1868) from the Cordillera de Cutucú in southeastern Ecuador (Nymphalidae: Satyrinae). Tropical lepidoptera Research 25(1): 1-4. full article (pdf). Reference page. 

2016

• Freitas, A.V.L., Barbosa, E.P., Willmott, K.R., Wahlberg, N. & Lamas, G. 2016. ‘Species’ from two different butterfly genera combined into one: description of a new genus of Euptychiina (Nymphalidae: Satyrinae) with unusually variable wing pattern. Revista Brasileire de Entomologia 60(3): 157–165. full article (PDF). Reference page. 

• Freitas, A.V.L., Magaldi, L.M. & Willmott, K.R. 2016. A new subspecies of Oleria gunilla (Nymphalidae: Danainae) from North Mato Grosso, Brazil. Journal of the Lepidopterists’ Society 70(4): 295–301 DOI: 10.18473/lepi.70i4.a8 . Reference page. 

• Nakahara, S., Tan, D., Lamas, G., Parus, A. & Willmott, K.R. 2016. A distinctive new species of Hermeuptychia Forster, 1964 from the eastern tropical Andes (Lepidoptera: Nymphalidae: Satyrinae) Tropical Lepidoptera Research 26(1): 6-12. full article (PDF). Reference page. 

• Nakahara, S., Vega, G. & Willmott, K.R. 2016. Description of a new species of Euptychia Hübner, 1818 (Lepidoptera: Nymphalidae: Satyrinae) from the western Andes. Zootaxa 4184(2): 358–366. DOI: 10.11646/zootaxa.4184.2.7 . Reference page. 

• Willmott, K.R., Mielke, O.H.H. & Freitas, A.V.L. 2016. A new subspecies and validation of the enigmatic species Adelpha herbita Weymer endemic to the Brazilian Atlantic forest (Nymphalidae: Limenitidinae). Tropical Lepidoptera Research 26(1): 32-37. full article (PDF). Reference page. 

2017

• Willmott, K.R., Lamas, G. & Hall, J.P.W. 2017. Notes on the taxonomy of Actinote intensa Jordan (Lepidoptera: Nymphalidae: Heliconiinae) and the description of a new sibling species from eastern Ecuador. Tropical Lepidoptera Research 27(1): 6-15. full article (PDF). Reference page. 

• Willmott, K.R., Simon, M., Ortiz-Acevedo, E. & Hall, J.P.W. 2017. First record of the enigmatic tribe Anaeomorphini (Lepidoptera, Nymphalidae, Charaxinae) outside of the Amazon basin: a new species of Anaeomorpha Rothschild, 1894, from the Chocó region of western Ecuador. Insecta Mundi (0548): 1–10. Full article (PDF). Reference page. 

2018

• Benmesbah, M., Zacca, T., Casagrande, M.M., Mielke, O.H.H., Lamas, G. & Willmott, K.R. 2018. Taxonomic notes on Papilio ocypete Fabricius, 1776 and Papilio helle Cramer, 1779 with description of two new similar species from South America (Lepidoptera: Nymphalidae: Satyrinae). Zootaxa 4425(1): 115–145. DOI: 10.11646/zootaxa.4425.1.7 . Reference page. 

• Espeland, M., Breinholt, J.W., Willmott, K.R., Warren, A.D., Vila, R., Toussaint, E.F.A., Maunsell, S.C., Aduse-Poku, K., Talavera, G., Eastwood, R., Jarzyna, M.A., Guralnick, R., Lohman, D.J., Pierce, N.E. & Kawahara, A.Y., 2018. A Comprehensive and Dated Phylogenomic Analysis of Butterflies. Current Biology 28, 1–9, Elsevier Ltd. DOI: 10.1016/j.cub.2018.01.061 Reference page. 

• Nakahara, S., Zacca, T., Huerta, B., Neild, A.F.E., Hall, J.P.W., Lamas, G., Holian, L.A., Espeland, M. & Willmott, K.R. 2018: Remarkable sexual dimorphism, rarity and cryptic species: a revision of the ‘aegrota species group’ of the Neotropical butterfly genus Caeruleuptychia Forster, 1964 with the description of three new species (Lepidoptera, Nymphalidae, Satyrinae). Insect Systematics & Evolution 49(2): 130–182. Reference page. 

• Nakahara, S., Willmott, K.R., Mielke, O.H.H., Schwartz, J., Zacca, T., Espeland, M. & Lamas, G. 2018a: Seven new taxa from the butterfly subtribe Euptychiina (Lepidoptera: Nymphalidae: Satyrinae) with revisional notes on Harjesia Forster, 1964 and Pseudeuptychia Forster, 1964. Insecta Mundi 0639: 1–38. Reference page. 

• Willmott, K.R., Lamas, G., Radford, J., Marín, M.A., Nakahara, S., Espeland, M., Xiao, L. & Hall, J.P.W. 2018. A distinctive new species of cloud forest Euptychiina (Lepidoptera: Nymphalidae: Satyrinae) from Ecuador and Peru. Tropical Lepidoptera Research 28(1): 39-45. full article (PDF). Reference page. 

2019

• Freitas, Woodbury, M.S., Barbosa & Willmott 2019. A new subspecies of Adelpha messana (C. Felder & R. Felder) from the Brazilian Atlantic forest (Nymphalidae: Limenitidinae). Tropical Lepidoptera Research 29(2): 62-66. Online. Reference page. .

• Nakahara, S., Lamas, G., Tyler, S., Marín, M.A., Huertas, B., Willmott, K.R., Mielke, O.H.H. & Espeland, M. 2019: A revision of the new genus Amiga Nakahara, Willmott & Espeland, gen. n., described for Papilio arnaca Fabricius, 1776 (Lepidoptera, Nymphalidae, Satyrinae). ZooKeys 821: 85–152. Reference page. 

• Willmott, K.R., Marín, M.A., Nakahara, S., Pomerantz, T., Lamas, G., Huertas, B., Espeland, M., Xiao, L., Hall, J.P.W., Willmott, J.I.R. & Freitas, A.V.L. 2019. A revision of the new Andean butterfly genus Optimandes Marín, Nakahara & Willmott, n. gen., with the description of a new species (Nymphalidae: Satyrinae: Euptychiina). Tropical Lepidoptera Research 29(1): 29-44. Online. Reference page. .