O. paradisea, [360], [361], [362]

Orphnephilidae, [470]

Ortalidae, [504], [506]

Ortalis, [447]

Orthezia, [541], [598]

Orthogenya, [494]

Orthogonius, [206]

Orthoperus atomarius, O. brunnipes, [228]

Orthoptera, [533];

parasite of, [497]