Dasineura investita
In 3 days ~10% in a week ~20%
Dasineura investita, the wood nettle gall midge, forms a gall that grows on the wood nettle plant Laportea canadensis. It was described in 2016 and is caused by a midge in the family Cecidomyiidae. The galls form on the petiole, upper leaf, leaf midrib, on leaf veins, between leaf veins, flower, stem. They are oval globose 4-5 mm by 8-12 mm pale, red, white, to green translucent. There are two generations a year, the full grown larva from the autumn generation overwinters in the central chamber of the gall. The genus Dasineura is a vary large one with many gall forming species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Philadelphia | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Wood Nettle Gall Midge sighting in Philadelphia on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 557th most-seen of the 632 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.
June
In that month about 10% of wildlife watchers report a Wood Nettle Gall Midge in Philadelphia on a given day, against under 5% in July to May, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Wood Nettle Gall Midge sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 cities where we can rate Wood Nettle Gall Midge sightings, Philadelphia ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Minneapolis [Saint Paul] (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Wood Nettle Gall Midge is recorded against all the insects logged in Philadelphia (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.
