# Recent Publications [ Older publications arrow\_circle\_right ](https://jamesmallet.github.io/publications.html) [ Book chapters arrow\_circle\_right ](/book-chapters) ## Recent Publications Download 8 citations download- [BibTeX](/bibcite/export?pager_style=no_pager&number_of_items=8&sort_field=bibcite_year--desc&taxonomy_filters=&&&format=bibtex) - [EndNote X3 XML](/bibcite/export?pager_style=no_pager&number_of_items=8&sort_field=bibcite_year--desc&taxonomy_filters=&&&format=endnote8) - [EndNote 7 XML](/bibcite/export?pager_style=no_pager&number_of_items=8&sort_field=bibcite_year--desc&taxonomy_filters=&&&format=endnote7) - [Endnote tagged](/bibcite/export?pager_style=no_pager&number_of_items=8&sort_field=bibcite_year--desc&taxonomy_filters=&&&format=tagged) - [Marc](/bibcite/export?pager_style=no_pager&number_of_items=8&sort_field=bibcite_year--desc&taxonomy_filters=&&&format=marc) - [PubMedId](/bibcite/export?pager_style=no_pager&number_of_items=8&sort_field=bibcite_year--desc&taxonomy_filters=&&&format=pubmed_id) - [RIS](/bibcite/export?pager_style=no_pager&number_of_items=8&sort_field=bibcite_year--desc&taxonomy_filters=&&&format=ris) ### Forthcoming Seixas, F., Dendy, S., Guan, S., Rosser, N., Grishin, N., Davies, N., Trujano-Ortega, M., Myers, T., Counterman, B., Papa, R., Gilbert, L. , jr, McMillan, W., & Mallet, J. (2026). [Ancient inversion polymorphisms are locally adaptive in a widespread butterfly species](/publication/ancient-inversion-polymorphisms-are-locally-adaptive-widespread-butterfly-species). *Nature Communications*. Seixas, F., Dendy, S., Guan, S., Rosser, N., Grishin, N., Davies, N., Trujano-Ortega, M., Myers, T., Counterman, B., Papa, R., Gilbert, L. , jr, McMillan, W., & Mallet, J. (2026). [Ancient inversion polymorphisms are locally adaptive in a widespread butterfly species](/publication/ancient-inversion-polymorphisms-are-locally-adaptive-widespread-butterfly-species). *Nature Communications*. Ben Chehida, Y., van der Heijden, E., Page, E., C., P. S., Rosser, N., C., K. G., Sánchez-Prado, M., Sánchez-Carvajal, M., Chandi, F., Arias-Cruz, A., Radford, M., Lamas, G., Jiggins, C., Mallet, J., McClure, M., Salazar, C., Elias, M., Bacquet, C., Nadeau, N., … Meier, J. (2026). [Genetic parallelism underpins mimicry across a wide range of divergence times](/publication/genetic-parallelism-underpins-mimicry-across-wide-range-divergence-times). *PLoS Biology*. Ben Chehida, Y., van der Heijden, E., Page, E., C., P. S., Rosser, N., C., K. G., Sánchez-Prado, M., Sánchez-Carvajal, M., Chandi, F., Arias-Cruz, A., Radford, M., Lamas, G., Jiggins, C., Mallet, J., McClure, M., Salazar, C., Elias, M., Bacquet, C., Nadeau, N., … Meier, J. (2026). [Genetic parallelism underpins mimicry across a wide range of divergence times](/publication/genetic-parallelism-underpins-mimicry-across-wide-range-divergence-times). *PLoS Biology*. ### 2026 Thawornwattana, Y., & Mallet, J. (2026). [Utility of subspecies in mosquito taxonomy](https://doi.org/10.1093/zoolinnean/zlag033). *Zoological Journal of the Linnean Society*, *206*(4). Thawornwattana, Y., & Mallet, J. (2026). [Utility of subspecies in mosquito taxonomy](https://doi.org/10.1093/zoolinnean/zlag033). *Zoological Journal of the Linnean Society*, *206*(4). ### 2025 [Müllerian mimicry in Neotropical butterflies: one mimicry ring to bring them all and in the jungle bind them](https://doi.org/10.1111/geb.70127). (2025). *Global Ecology and Biogeography*, *34*(9), e70127. (Original work published 2025) [Müllerian mimicry in Neotropical butterflies: one mimicry ring to bring them all and in the jungle bind them](https://doi.org/10.1111/geb.70127). (2025). *Global Ecology and Biogeography*, *34*(9), e70127. (Original work published 2025) - [ downloadREPRINT](https://doi.org/10.1111/geb.70127) - [ downloadREPRINT](https://doi.org/10.1111/geb.70127) [Mimicry and gene flow among butterfly species: reply to Brower and Garzón-Orduña](/publication/mimicry-and-gene-flow-among-butterfly-species-reply-brower-and-garzon-orduna). (2025). *Antenna*, *49*(1), 3-7. (Original work published 2025) [Mimicry and gene flow among butterfly species: reply to Brower and Garzón-Orduña](/publication/mimicry-and-gene-flow-among-butterfly-species-reply-brower-and-garzon-orduna). (2025). *Antenna*, *49*(1), 3-7. (Original work published 2025) - add\_circle\_outline do\_not\_disturb\_on Abstract - [ picture\_as\_pdfMallet & Dasmahapatra 202...](/sites/g/files/omnuum6606/files/2025-04/Mallet%20%26%20Dasmahapatra%202025%20proof.pdf) - [ descriptionA reply to: Brower, A.V.Z., & Garzón-Orduña, I.J. 2024. Evolution of mimicry in Heliconius butterflies: historical hypotheses meet modern models. Antenna 178:171-176. https://www.royensoc.co.uk/publications/antenna/antenna-volume-48-4-2024/](https://www.royensoc.co.uk/publications/antenna/antenna-volume-48-4-2024/) Once again, Brower and Garzón- Orduña criticize the majority of their fellow students of the butterfly genus Heliconius, especially the current authors. Once again, they fail to provide any new data or even reanalyses of the copious data we have... - [ picture\_as\_pdfMallet & Dasmahapatra 202...](/sites/g/files/omnuum6606/files/2025-04/Mallet%20%26%20Dasmahapatra%202025%20proof.pdf) - [ descriptionA reply to: Brower, A.V.Z., & Garzón-Orduña, I.J. 2024. Evolution of mimicry in Heliconius butterflies: historical hypotheses meet modern models. Antenna 178:171-176. https://www.royensoc.co.uk/publications/antenna/antenna-volume-48-4-2024/](https://www.royensoc.co.uk/publications/antenna/antenna-volume-48-4-2024/) Thawornwattana, Y., Flouri, T., Mallet, J., & Yang, Z. (2025). [Inference of gene flow between species from genomic data when the mode, direction, and lineages are misspecified](https://doi.org/10.1093/molbev/msaf121). *Molecular Biology and Evolution*, *42*(6), msaf121. Thawornwattana, Y., Flouri, T., Mallet, J., & Yang, Z. (2025). [Inference of gene flow between species from genomic data when the mode, direction, and lineages are misspecified](https://doi.org/10.1093/molbev/msaf121). *Molecular Biology and Evolution*, *42*(6), msaf121. ### 2024 Peñalba, J., Runemark, A., Meier, J., Singh, P., Wogan, G., Sánchez-Guillén, R., Mallet, J., Rometsch, S., Menon, M., Seehausen, O., Kulmuni, J., & Pereira, R. (2024). [The role of hybridization in species formation and persistence](/publications/role-hybridization-species-formation-and-persistence). *Cold Spring Harbor Perspectives in Biology*, a041445. (Original work published 2024) Peñalba, J., Runemark, A., Meier, J., Singh, P., Wogan, G., Sánchez-Guillén, R., Mallet, J., Rometsch, S., Menon, M., Seehausen, O., Kulmuni, J., & Pereira, R. (2024). [The role of hybridization in species formation and persistence](/publications/role-hybridization-species-formation-and-persistence). *Cold Spring Harbor Perspectives in Biology*, a041445. (Original work published 2024) - add\_circle\_outline do\_not\_disturb\_on Abstract - [ picture\_as\_pdfpenalba\_et\_al\_2024\_hybrid...](/sites/g/files/omnuum6606/files/malletlab/files/penalba_et_al_2024_hybridizationreview.pdf) Hybridization, or interbreeding between different taxa, was traditionally considered to be rare and to have a largely detrimental impact on biodiversity, sometimes leading to the breakdown of reproductive isolation and even to the reversal of speciation... - [ picture\_as\_pdfpenalba\_et\_al\_2024\_hybrid...](/sites/g/files/omnuum6606/files/malletlab/files/penalba_et_al_2024_hybridizationreview.pdf) Rosser, N., Seixas, F., Queste, L. M., Cama, B., Mori-Pezo, R., Kryvokhyzha, D., Nelson, M., de Figueiredo, C., Freitas, A., Joron, M., Kozak, K., Lamas, G., Martins, A., McMillan, O., Ready, J., Rueda-Muñoz, N., Salazar, C., Salazar, P., Schulz, S., … Dasmahapatra, K. K. (2024). [Hybrid speciation driven by multilocus introgression of ecological traits](/publications/hybrid-speciation-driven-multilocus-introgression-ecological-traits). *Nature*, *628*(25 April 2024), 811-817. Rosser, N., Seixas, F., Queste, L. M., Cama, B., Mori-Pezo, R., Kryvokhyzha, D., Nelson, M., de Figueiredo, C., Freitas, A., Joron, M., Kozak, K., Lamas, G., Martins, A., McMillan, O., Ready, J., Rueda-Muñoz, N., Salazar, C., Salazar, P., Schulz, S., … Dasmahapatra, K. K. (2024). [Hybrid speciation driven by multilocus introgression of ecological traits](/publications/hybrid-speciation-driven-multilocus-introgression-ecological-traits). *Nature*, *628*(25 April 2024), 811-817. - add\_circle\_outline do\_not\_disturb\_on Abstract - [ descriptionPublisher's Version](https://doi.org/10.1038/s41586-024-07263-w) - [ picture\_as\_pdfrosser\_et\_al.\_2024\_hybrid...](/sites/g/files/omnuum6606/files/malletlab/files/rosser_et_al._2024_hybrid_speciation.printed.pdf) Hybridisation allows adaptations to be shared among lineages and may trigger the evolution of new species. However, convincing examples of homoploid hybrid speciation remain rare because it is challenging to demonstrate that hybridisation was critical in... - [ descriptionPublisher's Version](https://doi.org/10.1038/s41586-024-07263-w) - [ picture\_as\_pdfrosser\_et\_al.\_2024\_hybrid...](/sites/g/files/omnuum6606/files/malletlab/files/rosser_et_al._2024_hybrid_speciation.printed.pdf) [ View All Citations arrow\_circle\_right ](/all-publications) ## New papers from us ![hybrid speciation](/sites/g/files/omnuum6606/files/styles/hwp_1_1__360x360_scale/public/malletlab/files/untitled-1sm.jpg?itok=AMl0AGF7) **Hybrid speciation in the Amazon.** Rosser, N., Seixas, F., et al. 2024. Hybrid speciation driven by multilocus introgression of ecological traits. Nature 628:811-817. --- ![Butterfly oocyte](/sites/g/files/omnuum6606/files/styles/hwp_1_1__360x360_scale/public/malletlab/files/papilio_ovary.jpg?itok=5i6HYFFK) **Halloween cover of PNAS, 31 October 2023.** [Tianzhu Xiong, et al.](https://mallet.oeb.harvard.edu/file_url/293) Hybrid sterility in female butterflies is best explained by a polygenic model of inheritance on Z chromosome and autosomes. --- ![Science cover, Nov. 1, 2019](/sites/g/files/omnuum6606/files/styles/hwp_1_1__360x360_scale/public/malletlab/files/cover_med_v2.jpg?itok=TMqWWGPM) **Cover of Science, Nov. 1, 2019**. The issue features [our paper on genomic evidence for gene flow among species](https://mallet.oeb.harvard.edu/publications/genomic-architecture-and-introgression-shape-butterfly-radiation-science). Photo by Andrew Neild. --- ![Heliconius demeter vs. eratosignis](/sites/g/files/omnuum6606/files/styles/hwp_1_1__360x360_scale/public/malletlab/files/demeter_widget.jpg?itok=grOI8byU) **A cryptic species discovered in** ***Heliconius*** **!** It is not always the case that mtDNA 'barcode' differences correctly delimit separate species. However, we recently found two cryptic *Heliconius* species that co-occur in sympatry in a narrow zone of overlap in Amazonia, initially via barcoding. Furthermore, the two taxa are co-mimics, so no mimicry switch led to speciation here, although we had thought that mimicry switches typically accompanied speciation in the genus *Heliconius.* [Rosser et al. 2019](https://doi.org/10.1093/zoolinnean/zly046).