Davis, J.J. 1935 Insects of Indiana for 1934.. Proceedings of Indiana Academy of Science 44: 198-206.
Notes: Scale species mentioned include Aspidiotus perniciosus, Lepidosaphes ulmi, Gossyparia ulmi and Chionaspis americana.
Davis, J.J. 1935 Insects of Indiana for 1934.. Proceedings of Indiana Academy of Science 44: 198-206.
Notes: Scale species mentioned include Aspidiotus perniciosus, Lepidosaphes ulmi, Gossyparia ulmi and Chionaspis americana.