Cissusa spadix
In 3 days ~10% in a week ~20%
Cissusa spadix, the black-dotted brown moth, is a species of moth in the family Erebidae. The species is found from Ontario and Quebec, south through most of the United States, to Arizona and Georgia. The wingspan is about 35 mm. 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 Black-Dotted Brown sighting in Dallas on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 1070th most-seen of the 1412 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.
March
In that month about 10% of wildlife watchers report a Black-Dotted Brown in Dallas on a given day, against under 5% in April to February, the lowest months.
Among the best
Of the 3 cities where we can rate Black-Dotted Brown sightings, Dallas ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Austin (United States, under 5%).
Same family: Erebidae
The closest relatives of the Black-Dotted Brown that you can see in Dallas (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Green Cloverworm Moth (about 20%), Salt Marsh Moth (about 10%) and Moonseed Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black-Dotted Brown is recorded against all the insects logged in Dallas (8 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.
