A new insect pest - the primary screwworm fly - has been moving into Iowa during recent summers to pester and kill some livestock. Two outbreaks were reported in June this year in southern Iowa and more may follow.
Drake, C. J. and Decker, G. C.
Farm Science Reporter: Vol. 4
, Article 4.
Available at: http://lib.dr.iastate.edu/farmsciencereporter/vol4/iss3/4