Complex sentence: It contains around 40 species, including 7 in eastern and northern Europe, It includes at least 17 species in North America, including the cottonwood leaf beetle "Chrysomela scripta".
Split into simpler sentences: It contains around 40 species, including 7 in eastern and northern Europe. It also includes at least 17 species in North America, including the cottonwood leaf beetle "Chrysomela scripta".