He was the author of numerous scientific papers on arachnids native to Italy and other Mediterranean regions. He also published articles on species found in East Africa, Central Asia (Himalayas and the Karakoram) as well as Central and South America. He was the taxonomic authority of numerous arachnid genera and species. Taxa with specific epithet of caporiaccoi are named in his honor, an example being the spider species Zodarion caporiaccoi.