Feeding of adult Japanese beetles on spur- and long-shoot leaves of birch taxa in subg. Betulenta.
| Plant identity | Amount of tissue eaten (cm2) | % of leaf tissue eaten | ||
|---|---|---|---|---|
| Spur | Long | Spur | Long | |
| B. alleghaniensis (NA 34710) | 14.96 | 8.92 | 49.8 | 29.2 |
| B. uber (NA 37939) | 5.97 | 0.18 | 49.3 | 1.9 |
| B. lenta (NA 34709) | 5.45 | 0.06 | 18.0 | 0.3 |