| Family: | Nepticulidae |
| Subfamily: | Nepticulinae |
| Genus: | Trifurcula |
| Species: | beirnei |
| Authority: | Puplesis, 1984 |


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 | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Site | Date | Quantity | Recorder | Stage |
|---|---|---|---|---|
| Jersey Camp (SZ49) | 29/07/2016 | one | Ian Merrifield | Adult |
| Site | Date | Quantity | Recorder | Stage |
|---|---|---|---|---|
| Southampton (SU30) | 20/08/1935 | - | W Fassnidge | - |
| Southsea (SZ69) | 20/08/2000 | one | John R Langmaid | Adult |
| Hayling (SU70) | 30/08/2002 | one | J R Langmaid, B Elliott | Adult |
| Hayling (SU70) | 02/09/2002 | three | J R Langmaid, B Elliott | Adult |
| Hayling (SU70) | 23/08/2003 | - | J R Langmaid, B Elliott | Adult |
| Hayling Billy (SU70) | 22/08/2011 | one | Tony Davis | Adult |