Chauliodes rastricornis
In 3 days ~20% in a week ~30%
Chauliodes rastricornis, the spring fishfly, is a species of fishfly in the family Corydalidae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Point Pelee National Park | 🇨🇦 Canada | |
| 2 | Acadia National Park | 🇺🇸 United States | |
| 3 | Merritt Island National Wildlife Refuge | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Detroit | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Orlando | 🇺🇸 United States | |
| 5 | Houston | 🇺🇸 United States | |
| 6 | Chicago | 🇺🇸 United States | |
| 7 | Montreal | 🇨🇦 Canada | |
| 8 | New York City | 🇺🇸 United States | |
| 9 | Toronto | 🇨🇦 Canada | |
| 10 | Dallas | 🇺🇸 United States |
No species of the same family or order lives in Merritt Island National Wildlife Refuge, so these are its closest relatives here: other insects.
With luck
About 10% of wildlife watchers report a Spring Fishfly sighting in Merritt Island National Wildlife Refuge on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 138th most-seen of the 189 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.
July–September and December–January
In those months about 10% of wildlife watchers report a Spring Fishfly in Merritt Island National Wildlife Refuge on a given day, against under 5% in February–June and October–November, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Spring Fishfly sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 3 parks where we can rate Spring Fishfly sightings, Merritt Island National Wildlife Refuge ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Point Pelee National Park (Canada, about 10%) and Acadia National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Spring Fishfly is recorded against all the insects logged in Merritt Island National Wildlife Refuge (7 verified sightings from 2019 to 2026), 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.
