Insects around Denver

Denver, Colorado, United States

Every measure here is worked out per 5 degree square, so this covers the wider area around Denver (35° to 40° latitude, -105° to -100° 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

SpeciesRecordsPer 1,000
Fall Field Cricket Gryllus pennsylvanicus13,121863.8
Snowy Tree Cricket Oecanthus fultoni1,908125.6
Convergent Lady Beetle Hippodamia convergens261.7
Honey Bee Apis mellifera191.3
Painted Lady Vanessa cardui151.0
Sevenspotted Lady Beetle Coccinella septempunctata130.9
Red-shouldered Bug Jadera haematoloma80.5
Harlequin Ladybird Harmonia axyridis60.4
Paper Wasp Polistes dominula50.3
Twenty-spotted Lady Beetle Psyllobora vigintimaculata40.3
Colorado Soldier Beetle Chauliognathus basalis40.3
Harlequin Bug Murgantia histrionica30.2
Nine-spotted Lady Beetle Coccinella novemnotata30.2
Monarch Danaus plexippus30.2
Gray Hairstreak Strymon melinus30.2

How well this area is covered

Watched in 10 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: 48 BirdWeather. Add a station to fill the gap.

Insects around Denver: arriving now and most recorded · Wildlife Network