Sphenophorus cariosus
In 3 days ~10% in a week ~20%
Sphenophorus cariosus, the nutgrass billbug, is a species of beetle in the family Dryophthoridae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Nutgrass Billbug sighting in Houston on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 734th most-seen of the 1057 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Nutgrass Billbug in Houston on a given day, so our monthly data shows no clear season.
Yes
Of the 3 cities where we can rate Nutgrass Billbug sightings, Houston has the highest daily chance: under 5%. Next come Austin (United States, under 5%) and Dallas (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Nutgrass Billbug is recorded against all the insects logged in Houston (9 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.
