Otiorhynchus meridionalis
In 3 days ~20% in a week ~30%
Otiorhynchus meridionalis, the lilac root weevil, is a species of broad-nosed weevil in the family Curculionidae. It is found in North America. Lilac root weevils are shiny, brownish-black beetles, about 0.25 inches (6 mm) with long snout (rostrum) and geniculate (elbowed) antennae. They are common landscape pests, feeding on lilac, euonymous and peonies.
Larvae feed on plant roots, while adult insects feed on leaves, eating only the edges in form of numerous U-shaped notches. They are commonly present on North American lilac, but rarely create lasting damage to the plant.
Adult insects are nocturnal. Like other root weevils (O. ovatus, O. rugostriatus and O. sulcatus), they often wander into households during hot summer months in search for shade and moisture. Although harmless to humans, pets and furnishings, they pose a nuisance. Treatment with pyrethroid-based insecticides is recommended only in cases of severe infestations, and the occasional bug is best tolerated or removed mechanically. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Salt Lake City | 🇺🇸 United States | |
| 2 | Denver | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Lilac Root Weevil sighting in Salt Lake City on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 103rd most-seen of the 242 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April, June–July and September–October
In those months about 10% of wildlife watchers report a Lilac Root Weevil in Salt Lake City on a given day, against under 5% in May, August and November–March, the lowest months.
Yes
Of the 2 cities where we can rate Lilac Root Weevil sightings, Salt Lake City has the highest daily chance: about 10%. Next come Denver (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Lilac Root Weevil is recorded against all the insects logged in Salt Lake City (19 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.
