| Rutelisca durangoana Ohaus, 1905 |
| Rutelisca flohri Bates, 1888 |
| Saprosites Redtenbacher, 1858 |
| Saprosites cossonoides Bates, 1888 |
| Scarabaeidae Latreille, 1802 |
| Scarabaeinae Latreille, 1802 |
| Scatimus Erichson, 1847 |
| Scatimus ovatus Harold, 1862 |
| Scatimus patruelis Preudhomme-Deborre, 1886 |
| Serica MacLeay, 1819 |
| Serica alternata LeConte, 1856 |
| Serica craighead Saylor, 1939 |
| Serica ensenada Saylor, 1948 |
| Serica fimbriata LeConte, 1856 |
| Serica michelbacheri Saylor, 1948 |
| Serica perigonia Dawson, 1920 |
| Serica perigonia subsp. eremicola Dawson, 1967 |
| Serica pilifera Horn, 1894 |
| Serica rossi Saylor, 1948 |
| Serica sculptilis Dawson, 1922 |