Publications for:

pest = Solanum viarum (weed)
country = Paraguay

found 2 publications:

2002

Insect herbivores associated with species of Solanum (Solanaceae) in northeastern Argentina and southeastern Paraguay, with reference to biological control of weeds in South Africa and the United States of America
Florida Entomologist (2002) 85 (1), 254-260
publishers website - pestinfo wiki

1996

An exploratory insect survey of tropical soda apple in Brazil and Paraguay
Florida Entomologist (1996) 79 (1), 70-73
publishers website - pestinfo wiki