Symmetrischema striatella
In 3 days ~10% in a week ~30%
Symmetrischema striatella is a moth in the family Gelechiidae. It was described by Mary Murtfeldt in 1900. It is found in North America, where it has been recorded Alabama, Arkansas, California, Florida, Illinois, Louisiana, Maine, Maryland, Mississippi, Missouri, New Jersey, Oklahoma, South Carolina, Tennessee and Texas. This species has also been accidentally introduced to New Zealand.
The wingspan is 11–13 mm. The forewings are light brown or brownish ocherous, sparsely speckled with black. There is a subcostal black, longitudinal line extending from the base to the apex, curving upward slightly and intensifying at the latter. Beneath this, two more or less definite blackish striations, the one on the inner margin being quite broad and diffused, while the discal streak is variable, not continuous, often consisting of two or three dashes. The hindwings are silken, ashy white, shading to cinereous (ash gray) at the tips.
The larvae feed on the berries of Solanum nigrum. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand | |
| 2 | Austin | 🇺🇸 United States | |
| 3 | Dallas | 🇺🇸 United States | |
| 4 | San Diego | 🇺🇸 United States | |
| 5 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Streaked Twirler sighting in Auckland on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 355th most-seen of the 689 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
January–February, July and November
In those months about 10% of wildlife watchers report a Streaked Twirler in Auckland on a given day, against under 5% in March–June, August–October and December, the lowest months.
Yes
Of the 5 cities where we can rate Streaked Twirler sightings, Auckland has the highest daily chance: under 5%. Next come Austin (United States, under 5%) and Dallas (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Streaked Twirler is recorded against all the insects logged in Auckland (13 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.
