December Moth Poecilocampa populi
The December Moth flies in a single generation in Yorkshire from late October until mid-December. It occurs in broadleaved woodland but is apparently absent from Calderdale.
The commonest Yorkshire macro-moths to be recorded in December are (in descending order):
| 1799 | Operophtera brumata | Winter Moth |
| 1935 | Erannis defoliaria | Mottled Umber |
| 1631 | Poecilocampa populi | December Moth |
| 2258 | Conistra vaccinii | Chestnut |
| 2259 | Conistra ligula | Dark Chestnut |
| 1933 | Agriopis aurantiaria | Scarce Umber |
| 2154 | Mamestra brassicae | Cabbage Moth |
| 1800 | Operophtera fagata | Northern Winter Moth |
| 2306 | Phlogophora meticulosa | Angle Shades |
| 1926 | Phigalia pilosaria | Pale Brindled Beauty |
| 1923 | Colotois pennaria | Feathered Thorn |
| 2256 | Eupsilia transversa | Satellite |
| 1760 | Chloroclysta siterata | Red-green Carpet |
| 2441 | Autographa gamma | Silver Y |
| 2241 | Xylena vetusta | Red Sword-grass |
| 2107 | Noctua pronuba | Large Yellow Underwing |
| 2469 | Scoliopteryx libatrix | Herald |
| 2187 | Orthosia cerasi | Common Quaker |
| 2264 | Agrochola macilenta | Yellow-line Quaker |
| 1960 | Theria primaria | Early Moth |
| 2235 | Lithophane semibrunnea | Tawny Pinion |
| 1795x | Epirrita dilutata agg. | November Moth agg. |
| 1795 | Epirrita dilutata | November Moth |
| 1769 | Thera britannica | Spruce Carpet |
| 2385 | Spodoptera exigua | Small Mottled Willow |
To find out more about micro-moths in Yorkshire during the month of December; click here.