Publications

Integrative data helps the assessment of a butterfly within the Udranomia kikkawai species complex (Lepidoptera: Hesperiidae): immature stages, natural history, and molecular evidence

Bachtold, A., Kaminski, L. A., Magaldi, L. M., Oliveira, P. S., Del-Claro, K., Janzen, D. H., Burns, J. M., Grishin, N., Hajibabaei, M., Hallwachs, W. and Freitas, A. V. L. 2017.  Integrative data helps the assessment of a butterfly within the Udranomia kikkawai species complex (Lepidoptera: Hesperiidae): immature stages, natural history, and molecular evidence.  Zoologischer Anzeiger 266:169-176. http://dx.doi.org/10.1016/j.jcz.2016.11.009

Three new species of Rectiostoma Becker, 1982 (Lepidoptera: Gelechioidea: Depressariidae) from Area de Conservacion Guanacaste, northwestern Costa Rica

Heikkila, M., Metz, M. A., Hallwachs, W., and Janzen, D. H. 2017.  Three new species of Rectiostoma Becker, 1982 (Lepidoptera: Gelechioidea: Depressariidae) from Area de Conservacion Guanacaste, northwestern Costa Rica.  Proceedings of the Entomological Society of Washington 119(1):47-62. http://dx.doi.org/10.4289/0013-8797.119.1.47

Nine new species of Uramya Robineau-Desvoidy (Diptera: Tachinidae) from Area de Conservación Guanacaste in northwestern Costa Rica, with a key to their identification

Fleming, A. J., Wood, D. M., Smith, M. A., Hallwachs, W., Janzen, D. H., and Dapkey, T. 2017.  Nine new species of Uramya Robineau-Desvoidy (Diptera: Tachinidae) from Area de Conservación Guanacaste in northwestern Costa Rica, with a key to their identification.  Biodiversity Data Journal 5: e9649 doi: 10.3897/BDJ.5.e9649

Varying and unchanging whiteness on the wings of dusk-active and shade-inhabiting Carystoides escalantei butterflies

Ge, D., Wu, G., Yang, L., Kim, H-N., Hallwachs,W., Burns, J. M., Janzen, D. H., and Yang, S. 2017.  Varying and unchanging whiteness on the wings of dusk-active and shade-inhabiting Carystoides escalantei butterflies.  Proceedings of the National Academy of Sciences 114(28):7379-7384. (www.pnas.org/cgi/doi/10.1073/pnas.1701017114)

Nuclear genomes distinguish cryptic species suggested by their DNA barcodes and ecology

Janzen, D.H., Burns, J.M., Cong, Q., Hallwachs,W., Dapkey, T., Manjunath, R., Hajibabaei, Hebert, P.D.N., and Grishin, N.V. 2017.  Nuclear genomes distinguish cryptic species suggested by their DNA barcodes and ecology.  Proceedings of the National Academy of Sciences 114(31):8313-8318. (www.pnas.org/cgi/doi/10.1073/pnas.1621504114)

Five new species of Vibrissina Rondani (Diptera: Tachinidae) from Area de Conservacion Guanacaste in Northwestern Costa Rica

Fleming, A. J., Wood, D. M., Smith, M. A., Dapkey, T. Hallwachs, W., and Janzen, D. H. 2017.  Five new species of Vibrissina Rondani (Diptera: Tachinidae) from Area de Conservacion Guanacaste in Northwestern Costa Rica.  Biodiversity Data Journal 5: e10967 doi:10.3897/BDJ.5.e10967

Caterpillars lack a resident gut microbiome

Hammer, T. J., Janzen, D. H., Hallwachs, W., Jaffe, S. P., and Fierer, N. 2017. Caterpillars lack a resident gut microbiome.  Proceedings of the National Academy of Sciences (www.pnas.org/cgi/doi/10.1073/pnas.1707186114).

Low-cost agricultural waste accelerates tropical forest regeneration

Treuer, T. L. H., Choi, J. J., Janzen, D. H., Hallwachs, W., Perez-Aviles, D., Dobson, A., Powers, J. S., Shanks, L. C., Werden, L. K., and Wilcove, D. S. 2017.  Low-cost agricultural waste accelerates tropical forest regeneration.  Restoration Ecology 9 pp. doi: 10.1111/rec.12565

Six new cryptic species of Xylodonta Becker, 2014 (Notodontidae: Nystaleinae) from Costa Rica.

Chacon, I. A., Janzen, D. H., Hallwachs, W., Dapkey, T., Harvey, D. J., and Grishin, N.V. 2017.  Six new cryptic species of Xylodonta Becker, 2014 (Notodontidae: Nystaleinae) from Costa Rica.  Tropical Lepidoptera Research 27(1): 33-58.

Descriptions of four new species of Struthoscelis Meyrick (Lepidoptera: Oecophoridae: Oecophorinae), one from Area de Conservacion Guanacaste, northwestern Costa Rica, providing the first known biology of for the genus, and discovery of a novel wing morph

Metz, M. A., Janzen, D. H., Hallwachs, W.  2017.  Descriptions of four new species of Struthoscelis Meyrick (Lepidoptera: Oecophoridae: Oecophorinae), one from Area de Conservacion Guanacaste, northwestern Costa Rica, providing the first known biology of for the genus, and discovery of a novel wing morphology in males.  Proceedings of the Entomological Society of Washington 1119(3):442-458. http://dx.doi.org/10.4289/0013-8797.119.3.442

Biodiversity Conservation History and Future in Costa Rica: The Case of Area de Conservacion Guanacaste (ACG)

Janzen, D.H. and Hallwachs, W. 2016.  Biodiversity Conservation History and Future in Costa Rica: The Case of Area de Conservacion Guanacaste (ACG).  Chapter 10.  In Costa Rican Ecosystems, Kappelle, M. ed. University of Chicago Press, Chicago,  pp. 290-341.

DNA barcoding the Lepidoptera inventory of a large complex tropical conserved wildland, Area de Conservacion Guanacaste, northwestern Costa Rica

Janzen, D. H. and Hallwachs, W. 2016.  DNA barcoding the Lepidoptera inventory of a large complex tropical conserved wildland, Area de Conservacion Guanacaste, northwestern Costa Rica.  Genome 59:641-660 dx.doi.org/10.1139/gen-2016-0005.

Contributions of paraecologists and parataxonomists to research, conservation, and social development

Schmiedel, U., Araya, Y., Bortolotto, M. I., Boeckenhoff, L., Hallwachs, W., Janzen, D.H., Kolipaka, S. S., Novotny, V., Palm, M., Parfondry, M., Smanis, A., and Toko, P. 2016.  Contributions of paraecologists and parataxonomists to research, conservation, and social development.  Conservation Biology 30(3):506-519.  DOI: 10.1111/cobi.12661

Two new species of Erythromelana Townsend, 1919 (Diptera: Tachinidae) from Area de Conservacion Guanacaste in northwestern Costa Rica

Fleming, A.J., Wood, D.M., Smith, M.A., Hallwachs, W., Janzen, D.H., and Dapkey, T. 2016.  Two new species of Erythromelana Townsend, 1919 (Diptera: Tachinidae) from Area de Conservacion Guanacaste in northwestern Costa Rica.  Biodiversity Data Journal 4: e7386.  Doi: 10.3897/BDJ.4.e7386.

A new species of Phosocephala Townsend, 1908 (Diptera: Tachinidae) from Area de Conservacion Guanacaste in northwestern Costa Rica

Fleming, A.J., Wood, D.M., Smith, M.A., Janzen, D.H., Hallwachs, W. and Dapkey, T. 2016.  A new species of Phosocephala Townsend, 1908 (Diptera: Tachinidae) from Area de Conservacion Guanacaste in northwestern Costa Rica.  Biodiversity Data Journal 4: e7863. doi: 10.3897/BDJ.4.e7863

Revision of the genus Promicrogaster (Hymenoptera, Braconidae, Microgastrinae) from Area de Conservacion Guanacaste, Costa Rica, with a key to all species previously described from Mesoamerica

Fernandez-Triana, J., Boudreault, C., Dapkey, T., Smith, M.A., Rodriguez, J. J., Hallwachs, W., and Janzen, D. H. 2016.   Revision of the genus Promicrogaster (Hymenoptera, Braconidae, Microgastrinae) from Area de Conservacion Guanacaste, Costa Rica, with a key to all species previously described from Mesoamerica.  Journal of Hymenoptera Research 50:25-79.  Doi: 10.3897/JHR.50.8220

Review of the world species of Exoryza (Hymenoptera, Braconidae, Microgastrinae), with description of five new species

Fernandez-Triana, J., Whitfield, J. B., Smith, M. A., Dapkey, T., Hallwachs, W. and Janzen, D. H. 2016.  Review of the world species of Exoryza (Hymenoptera, Braconidae, Microgastrinae), with description of five new species.  Deutsche Entomologische Zeitschrift 63(2):129-210.  DOI 10.3897/dez.63.8977.

Advancing taxonomy and bioinventories with DNA barcodes

Miller, S. E., Hausmann, A., Hallwachs, W. and Janzen, D. H. 2016.  Advancing taxonomy and bioinventories with DNA barcodes.  Philosophical Transactions of the Royal Society B 371: 20150339.  http://dx.doi.org/10.1098/rstb.2015.0339

Further progress on the phylogeny of Noctuoidea (Insects: Lepidoptera) using an expanded gene sample

Regier, J.C., Mitter, C., Mitter, K., Cummings, M. P., Bazinet, A. L., Hallwachs, W., Janzen, D. H., and Zwick, A. 2016.  Further progress on the phylogeny of Noctuoidea (Insects: Lepidoptera) using an expanded gene sample.  Systematic Entomology, DOI: 10.1111/syen.12199

Chacon et al 2012

Chacon et al. 2012. A new species of Opsiphanes Doubleday, [1849] from Costa Rica (Nymphalidae: Morphinae: Brassolini), as revealed by its DNA barcodes and habitus.

This is the formal scientific description of Opsiphanes jacobsorum, a new rare species of big ACG butterfly previously misidentified as a common one, discovered by DNA barcoding and the caterpillar inventory. The lead author, Isidro Chacon, is a curator in INBio (Instituto Nacional de Biodiversity), with more than 30 years of field and collection experience in Costa Rica, and supported by the JRS Biodiversity Foundation through GDFCF. The new species name is dedicated to two GDFCF major donors.

PDF (1.2 MB), 16 pages

Janzen 2000 A long march to survival

Janzen 2000. Costa Rica’s Area de Conservacion Guanacaste: a long march to survival through non-damaging biodiversity and ecosystem development.

This is about the struggle to restore and conserve ACG dry forest, and find innovative funding and management mechanisms. It was written for a 2000 UN conference.

PDF (94 KB), 11 pages

Janzen, D. H. 2010. Hope for tropical biodiversity

Janzen, D. H. 2010. Hope for tropical biodiversity through true bioliteracy.

A plea for urgent pragmatic action for conservation and offering the promise of using DNA barcoding for that, both directly and by giving everyone bioliteracy. Addressed to tropical scientists and conservationists but suitable for a wide audience.

PDF (90 KB), 3 pages

Whitbeck 2004. Review: Green Phoenix: Restoring the Tropical Forests of Guanacaste

Whitbeck 2004. Review:  Green Phoenix: Restoring the Tropical Forests of Guanacaste, Costa Rica, by journalist William Allen 2001.

This reviews a descriptive book about the colorful history of the first 15 years of ACG. The review is written by a biologist for a forest restoration journal.

PDF (49 KB), 2 pages