Basiaeschna janata
In 3 days ~10% in a week ~20%
Basiaeschna janata, the springtime darner, is a species of dragonfly in the monotypic genus Basiaeshna in the family Aeshnidae. It is a small, bluish darner that flies early in the year. A fossil species, †Basiaeschna alaskaensis Garrouste & Nel, 2019 is known from the Chickaloon Formation of Alaska, around the time of the Paleocene-Eocene Thermal Maximum. It is the only definitive fossil member of this genus, and its presence in Alaska suggests that the ancestral Basiaeschna likely migrated from Eurasia to North America across Beringia. Two other fossil darner previously placed in this genus have been transferred into the extinct genus †Oligaeschna. 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 Springtime Darner sighting in Austin on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1503rd 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 Springtime Darner in Austin on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Springtime Darner sightings, Austin ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Montreal (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Springtime Darner is recorded against all the insects logged in Austin (5 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.
