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Hornet is the common name for wasps in the genus Vespa. They are members of the insect family Vespidae in the order Hymenoptera, which also includes other social wasps like yellowjackets and paper wasps. There are 22 species of hornets worldwide, none of which are native to Canada. However, three introduced species have been found here: the European hornet (Vespa crabro) in southern Ontario and  Quebec, and the Japanese yellow hornet (Vespa simillima) and Asian giant hornet (Vespa mandarinia) in coastal British Columbia. The bald-faced hornet (Dolichovespula maculata) is native to Canada, but is actually a species of yellowjacket.

Donald Alfred Chant, OC, FRSC, scientist, educator, environmentalist, executive (born 30 September 1928 in Toronto, ON; died 23 December 2007 in Kingston, ON). Chant was one of the foremost experts on the phytoseiid family of predatory mites. A professor of zoology and administrator at the University of Toronto, he was also a prominent environmental leader and advocate.

Biruté Marija Filomena Galdikas, OC, primatologist, conservationist, educator (born 10 May 1946 in Wiesbaden, Germany). Galdikas is the world’s leading authority on orangutans. She has studied them in Indonesian Borneo since 1971. She is also involved in conservation and rehabilitation efforts for orangutans. Galdikas forms part of a trio of primatologists nicknamed the “Trimates,” along with Jane Goodall and Dian Fossey. Galdikas spends part of the year in Indonesia and teaches half time at Simon Fraser University in Vancouver.

Louis Siminovitch, CC, OC, OOnt, FRS, FRSC, molecular biologist (born 1 May 1920 in Montreal, QC; died 6 April 2021 in Toronto, ON). Siminovitch served on various national and provincial research and educational organizations. As a founder of the field, his research centered on somatic cell genetics and on the molecular biology of mammalian cells. (See also Genetics.) He has had a major influence on the careers of numerous Canadian molecular biologists, including James Till and Ernest McCulloch with their groundbreaking stem cell research.

Rose Mamelak Johnstone, FRSC, biochemist (born 14 May 1928 in Lodz, Poland; died 3 July 2009 in Montreal, QC). Rose Johnstone is best known for her discovery of exosomes, a key development in the field of cell biology. These tiniest of structures originating in all cells of the human body are vehicles that transport proteins, lipids and RNA from one cell to another. A pioneer of women in science, Johnstone was the first woman to hold the Gilman Cheney Chair in Biochemistry and the first and only woman chair of the Department of Biochemistry in McGill University’s Faculty of Medicine.

Irene Ayako Uchida, OC, geneticist (born 8 April 1917 in Vancouver, BC; died 30 July 2013 in Toronto, ON). Dr. Uchida pioneered the field of cytogenetics in Canada, enabling early screening for chromosomal abnormalities (i.e., changes in chromosomes caused by genetic mutations). She discovered that women who receive X-rays during pregnancy have a higher chance of giving birth to a baby with Down syndrome and other chromosomal abnormalities. She also discovered that the extra chromosome that causes Down syndrome may come from either parent, not only the mother.

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Armand Frappier, CC, physician, microbiologist (born 26 November 1904 in Salaberry-de-Valleyfield, QC; died 17 December 1991 in Montréal, QC). Armand Frappier was a key figure in the fight against tuberculosis in Canada; he both produced the BCG (bacillus Calmette-Guérin) vaccine and advocated widespread vaccinations across the country. As founder and director of the Institut de microbiologie et d'hygiène de Montréal, he advanced medical research into infectious diseases and played an important role in the development of public health. (See also INRS-Armand-Frappier Santé Biotechnologie Research Centre.) He and his team produced a number of vaccines and other biological products (e.g., the anti-polio Salk vaccine, penicillin) and were responsible for freeze-drying blood serum for the armed forces during the Second World War. (See also Canada and the Development of the Polio Vaccine).