Ryder, David A. (2007). "Biographical & Type Information- F". Pentatomidea Home Page. North Dakota State University, Fargo. Archived from the original on 7 February 2012. Retrieved 31 December 2011.
Ryder, David A. (2007). "Biographical & Type Information- F". Pentatomidea Home Page. North Dakota State University, Fargo. Archived from the original on 7 February 2012. Retrieved 31 December 2011.