Sphenophorus coesifrons
In 3 days ~10% in a week ~20%
Sphenophorus coesifrons, or the oblite billbug, is a species of beetle in the family Dryophthoridae. It is found in North America. Its length ranges from about a quarter to five-sixteenths of an inch, and it closely resembles the bluegrass billbug, from which it can be distinguished by its shorter and much heavier beak.
The oblite billbug can be found from Maryland and Wisconsin in the north to the Gulf Coast and Arizona in the south. As of 1924, its natural food was unknown, but it had been reared in timothy in the midwestern states of Illinois and Michigan. It was considered extremely destructive to corn along the Gulf Coast, and was recorded destroying the first and second plantings.
Female oblite billbugs were observed laying eggs in late summer, and in captivity the young were slow in developing, spending at least five months in the larval stage. Its life cycle was expected to resemble that of the bluegrass billbug in the northern part of its range, while in the south eggs would be laid in late summer or fall, allowing the young to overwinter as larvae, pupae, or adults. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Sphenophorus coesifrons sighting in Austin on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 1392nd most-seen of the 1624 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 Sphenophorus coesifrons in Austin on a given day, so our monthly data shows no clear season.
Among the best
Of the 3 cities where we can rate Sphenophorus coesifrons sightings, Austin ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Dallas (United States, under 5%) and Houston (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Sphenophorus coesifrons is recorded against all the insects logged in Austin (6 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.
