Answers are grounded in this paper and cite their sources.
Asa C. Maxson; Some Unpublished Notes on Pemphigus Betæ Doane, Journal of Economic Entomology, Volume 9, Issue 5, 1 October 1916, Pages 500–505, https://doi.org
No takes yet. Share an insight, caveat, or question.
Asa C. Maxson (1916) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: