- font face= Arial, Helvetica size= -1 The Canadian National Collection (CNC) of Insects, Arachnids and Nematodes is considered one of the best collections of its kind in the world in terms of size, species representation, and level of curation. It is maintained and developed by Agriculture and Agri-Food Canada as part of its systematics research program, and is housed ...res2.agr.ca/ecorc/cnc