| Date | DDs | Event |
| 5-16-17 | 360 | Peak 2nd instar |
| 5-27-17 | 534 | Peak 3rd instar |
| 6-9-17 | 728 | Peak 4th instar |
| 6-19-17 | 871 | 50% 5th & 6th instar |
| 6-24-17 | 993 | 1st pupae |
| 6-27-17 | 1068 | 50% pupation |
| 2-3-18 | 1193 | End (last) pupation |
| 45.8 | F | double sine |
| spongy moth larvae & pupae [mixed oak] model |