55 species as of May, 2025 accepted at Kew's Plants of the World: •
Orthosia selloana (E. Fourn.) Liede & Meve - Brazil •
Orthosia sepium (Decne.) Liede & Meve - Mexico (E. Oaxaca) •
Orthosia smaragdina W.D. Stevens - Guatemala •
Orthosia stannardii (Morillo) Liede & Meve - Venezuela (Amazonas) •
Orthosia stenophylla Schltr - Central & S. Colombia •
Orthosia stipitata W.D. Stevens - Mexico (Chiapas) •
Orthosia subulata (Vell.) Liede & Meve -SE. & S. Brazil to Argentina (Misiones) •
Orthosia teodormeyeri Liede & Meve - NW Argentina •
Orthosia tomentosa (E.Fourn.) Malme - SE. & S. Brazil to Argentina (Misiones) •
Orthosia umbrosa Decne. - Rio de Janeiro •
Orthosia urceolata E.Fourn. - Brazil •
Orthosia virgata (Poir.) E. Fourn. - Argentina •
Orthosia woodii Meve & Liede - Bolivia ;Partial list of formerly included taxa: ==References==