Photo © Mike Wall
Stephens' Gem
Megalographa biloba
Checklist Number73.019 [B&F: 2445]
Verification
Record will require further evidence, at least a good photograph, unless CMR is aware recorder has confidence in identification
Very rare immigrant from North America, appearing in the south-west on nine occasions between 1954 and 2021, with three in 2021, although it is likely that some if not all records relate to individuals imported on foodplants. The sole Hampshire record was from Crawley in the centre of the county in 2001. Wingspan 38-44 mm. Records of this species will not be accepted unless the specimen is retained for examination. Larva feeds on commercial crops such as Cabbage, Garden Lettuce and Tobacco.
The abundance in each month is indicated as follows:
No records
Very occasional
Irregular
Uncommon
Off-peak, but not unusual
Off-peak, but not unusual
Main flight time| J | F | M | A | M | J | J | A | S | O | N | D | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Adult | | | | | | | | | | | | |
| Larval | | | | | | | | | | | | |
Records by week (adult)
Records by week (larval)
VC12 North Hampshire
| Site | Date | Quantity | Recorder | Stage |
|---|---|---|---|---|
| Northwood (SU43) | 28/10/2001 | one | Reg A Bell | Adult |