Insects around Portland
Portland, Oregon, United States
Every measure here is worked out per 5 degree square, so this covers the wider area around Portland (45° to 50° latitude, -125° to -120° longitude, about 550 km across), not the city alone. Counts are shares of all insects records in the same weeks, so busier stations do not inflate them (methods).
Arrived in the last four weeks
No insects arrived here in these weeks last year, as far as the records show.
Expected in the next six weeks
No arrivals expected here in the next six weeks, going by last year.
Dates are last year's first regular records after at least six weeks away, with each species' own uncertainty on its page. Each species page can email you when it turns up.
Most recorded, last eight weeks
| Species | Records | Per 1,000 |
|---|---|---|
| Snowy Tree Cricket Oecanthus fultoni | 873 | 655.4 |
| Honey Bee Apis mellifera | 29 | 21.8 |
| Common Eastern Bumble Bee Bombus impatiens | 29 | 21.8 |
| Brown-lined Looper Neoalcis californiaria | 27 | 20.3 |
| Hemlock Looper Lambdina fiscellaria | 18 | 13.5 |
| California Gall Wasp Andricus quercuscalifornicus | 14 | 10.5 |
| Spotted Tussock Moth Lophocampa maculata | 14 | 10.5 |
| Paper Wasp Polistes dominula | 11 | 8.3 |
| California Tortoiseshell Nymphalis californica | 10 | 7.5 |
| Large Yellow Underwing Noctua pronuba | 10 | 7.5 |
| Drone Fly Eristalis tenax | 10 | 7.5 |
| Brown Marmorated Stink Bug Halyomorpha halys | 10 | 7.5 |
| Harlequin Ladybird Harmonia axyridis | 8 | 6.0 |
| Isabella Tiger Moth Pyrrharctia isabella | 7 | 5.3 |
| Pale Beauty Campaea perlata | 7 | 5.3 |
How well this area is covered
Watched in 7 of the last 12 weeks for insects (enough records to count; unwatched weeks say nothing about absence). Active stations here in the last 30 days: 570 BirdWeather, 7 orcasound, 1 acartia. Add a station to fill the gap.