Dichrorampha petiverella
In 3 days ~10% in a week ~20%
Dichrorampha petiverella is a moth of the family Tortricidae. It is found in the Palearctic realm. The wingspan is 10–13 mm. The forewings are dark fuscous, posteriorly irrorated with pale orange ochreous. The costa is posteriorly strigulated with whitish. There is a sharply marked whitish -yellowish rather narrow curved transverse median dorsal blotch and two dark leaden-metallic oblique streaks from the costa posteriorly. There are three or four black dots on the termen towards middle, and a whitish subapical dash. The hindwings are dark fuscous, lighter basally. The larva is pinkish-white; head yellowish-brown; plate of 2 brownish-tinged :
The moth flies from April to August. [1]. The larvae feed on Achillea millefolium and tansy. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | Helsinki | 🇫🇮 Finland | |
| 4 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Common Drill sighting in London on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 895th most-seen of the 1504 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
June
In that month about 10% of wildlife watchers report a Common Drill in London on a given day, against under 5% in July to May, the lowest months.
Among the best
Of the 4 cities where we can rate Common Drill sightings, London ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Liverpool (United Kingdom, under 5%), Birmingham (United Kingdom, under 5%) and Helsinki (Finland, under 5%).
GBIF citizen-science records
It is estimated from how often the Common Drill is recorded against all the insects logged in London (15 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
