The Editors would like to thank the following people for their invaluable help and advice in the review of manuscripts between 1 August 2020 and 31 July 2021. If a reviewer helped with more than one manuscript, the number is indicated in parentheses.

Abernethy, K., Stirling, UK

Adams, T., Kasane, Botswana

Adhikari, A., Kathmandu, Nepal

Alempijevic, D., Boca Raton, USA

Altrichter, M., Prescott, USA

Andreone, F., Turin, Italy

Appleton, M., Thetford, UK

Arinaitwe, J., Nairobi, Kenya

Aust, P., Johannesburg, South Africa

Azat, C., Santiago, Chile

Balint, L., Cambridge, UK

Bauer, H., Tubney, UK

Becker, H., Cambridge, UK

Belhekar, V., Mumbai, India

Bergl, R., Asheboro, USA

Beton, D., Kyrenia, Cyprus

Bingham, H., Cambridge, UK

Bista, D., Kathmandu, Nepal

Black, S., Canterbury, UK

Blades, B., Oxford, UK

Blake, J., Gainesville, USA

Bonebrake, T., Hong Kong, China

Borchers, D., St Andrews, UK

Botton, M., New York City, USA

Bowden, C., Sandy, UK

Brack, I., Porto Alegre, Brazil

Breuer, T., Berlin, Germany

Brockelman, W.Y., Nakhon Pathom, Thailand

Brockington, D., Sheffield, UK

Brodie, J., Missoula, USA

Byers, B., Falls Church, USA

Caitano, H., Vitoria, Brazil

Carignano Torres, P., São Paulo, Brazil

Carter, N., Boise, USA

Carvalho, V., Caucaia, Brazil

Casella, L., Rome, Italy

Ceballos, G., Mexico City, Mexico

Chan, A., Fort Collins, USA

Cheyne, S., Palangka Raya, Indonesia

Chiarello, A., Belo Horizonte, Brazil

Choudhary, S., Noida, India

Cisneros-Montemayor, A., Vancouver, Canada

Crema, L., Manaus, Brazil

Cresswell, W., St Andrews, UK

Davenport, T., Stone Town, Tanzania

de Jong, Y.A., Nanyuki, Kenya

Denninger Snyder, K., Fort Collins, USA

Detwiler, K., Boca Raton, USA

Diniz, M., Goiânia, Brazil

Domínguez Tejo, H., Santo Domingo, Dominican Republic

Donald, P., Cambridge, UK

dos Santos, J., Maceió, Brazil

Duckworth, W., Geneva, Switzerland (2)

Dudley, N., Bristol, UK

Dunn, M., London, UK

Ehmke, G., Carlton, Australia

Elliott, L., Gland, Switzerland

Espinosa de los Monteros, A., Xalapa, Mexico

Ferraz, K., Piracicaba, Brazil

Fisher, B., Burlington, USA

Fisher, R., San Diego, USA

Fjeldså, J., Copenhagen, Denmark

Formia, A., Libreville, Gabon

Fruth, B., Liverpool, UK

Fuller, T., Amherst, USA

Gardner, M.F., Edinburgh, UK

Garnett, S., Darwin, Australia (2)

Geary, M., Chester, UK

Ghanbari, S., Tabriz, Iran

Gilbert, G., Glasgow, UK

Gill, D., Cambridge, UK

Gluszek, S., Cambridge, UK

Goossens, B., Cardiff, UK

Green, R., Cambridge, UK

Groom, M., Bothell, USA

Harihar, A., Uttaranchal, India

Hart, J., Kinshasa, Democratic Republic of the Congo

Havmøller, R., Copenhagen, Denmark

Hays, G., Warrnambool, Australia

Hearn, A., Tubney, UK

Heymann, E.W., Göttingen, Germany

Hoare, R., Arusha, Tanzania

Hoffmann, P., Campo Largo, Brazil

Holmes, G., Leeds, UK

Home, C., Jakkur, India

Hübschle, A., Cape Town, South Africa

Hunter, L., New York City, USA

Ibbett, H., Bangor, UK

Jeanson, A., Ottawa, Canada

Jiang, X., Kunming, China

Jiang, Z., Beijing, China

Johnson, A., Vientiane, Laos

Jones, Martin, Manchester, UK

Jones, Megan, Boulder, USA

Kacoliris, F., La Plata, Argentina

Kamel, M., Qena, Egypt

Karamanlidis, A.A., Thessaloniki, Greece

Khara, A., Mysore, India

King, T., Port Lympne, UK

Koju, N.P., Bhaktapur, Nepal

Kraus, F., Ann Arbor, USA

Kretser, H., Saranac Lake, USA

Kujirakwinja, D., New York City, USA

Lamichhane, B.R., Sauraha, Nepal

Le Bel, S., Paris, France

Lemessa, D., Addis Ababa, Ethiopia

Lennon, O., Wellington, New Zealand

Letro, L., Thimphu, Bhutan

Link, A., Bogotá, Colombia

Lloyd, H., Manchester, UK

Lowry, P., Paris, France

Loy, A., Pesche, Italy

Luiselli, L., Rome, Italy

Lunt, N., Bulawayo, Zimbabwe

Mallon, D., Glossop, UK

Martin, A., Dundee, UK

Melo, F., Viçosa, Brazil

Mickleburgh, S., London, UK

Missoup, A.D., Douala, Cameroon

Mistry, J., Egham, UK

Moore, J., Houston, USA

Moraes, B., Recife, Brazil

Morcatty, T., Oxford, UK

Moreto, W., Orlando, USA (2)

Mugerwa, B., Berlin, Germany (2)

Muñoz Brenez, C., Arlington, USA

Mwangi, K., Cambridge, UK

Nayeri, D., Arcata, USA

Newing, H., Oxford, UK

Ngoprasert, D., Bangkok, Thailand

Noss, A., Gainesville, USA

Nowak, K., Phuthaditjaba, South Africa

Olson, E., Ashland, USA

Omeyer, L., Exeter, UK

Ortega-Argueta, A., Villahermosa, Mexico

Ostrowski, S., New York City, USA (2)

Otieno, M., Nairobi, Kenya

Owen, N., London, UK

Pardo, M., La Paz, Mexico (2)

Parks, D., London, UK

Patricio, A.R., Coimbra, Portugal

Pierce, S., Inhambane, Mozambique

Pietersen, D., Pretoria, South Africa

Portugal, M., Belo Horizonte, Brazil

Pretis, F., Victoria, Canada

Pritchard, R., Manchester, UK

Rahman, D., Bogor, Indonesia

Rao, M., Singapore, Singapore

Richmond, J., San Diego, USA (2)

Riordan, P., Winchester, UK (2)

Rojas-Marchini, F., Vancouver, Canada (2)

Roshier, D., Adelaide, Australia

Round, P., Bangkok, Thailand

Rylands, A., Arlington, USA

Samelius, G., Seattle, USA

Sánchez, L., Caracas, Venezuela

Sanderson, E.W., New York City, USA

Savini, T., Bangkok, Thailand (2)

Schneider, H., Cambridge, UK

Scholte, P., Abidjan, Côte d'Ivoire

Seddon, P., Dunedin, New Zealand (2)

Shaffer, B., Los Angeles, USA

Shaney, K., Mexico City, Mexico

Sharma, H., Kirtipur, Nepal

Shi, K., Beijing, China

Shwe, N.M., Yangon, Myanmar

Slaght, J., Vladivostok, Russian Federation

Smith, P., Richmond, UK (2)

Sonter, L., Burlington, USA

Souter, N., Arlington, USA

Spira, C., Bukavu, Democratic Republic of the Congo

Steinmetz, R., Bangkok, Thailand

Stokes, E., New York City, USA

Storch, I., Freiburg, Germany

Struebig, M., Canterbury, UK

Sung, Y.-H., Hong Kong, China

Tallis, H., Berkeley, USA

Thevenin, C., Paris, France

Tiongson, A.J., Dumaguete City, Philippines

Tobe, S., Murdoch, Australia

Turvey, S., London, UK

Valvede, A., San Jose, Costa Rica

Vermeer, J., Moyobamba, Peru

Wei, F., Beijing, China

Weller, S., Irvine, USA (2)

Whitmore, N., Goroka, Papua New Guinea

Wilkie, D.S., Waltham, USA

Wilson, S., Chester, UK

Woinarski, J., Darwin, Australia

Wurz, A., Goettingen, Germany

Xu, Q., La Jolla, USA

Yang, B., Chengdu, China

Zapata-Rios, G., Quito, Ecuador

Zhang, M., Menglun, China

Zöckler, C., Cambridge, UK