Costaconvexa centrostrigaria
In 3 days ~10% in a week ~20%
Costaconvexa centrostrigaria, the traveller or bent-line carpet, is a moth in the family Geometridae. It is native to most of North America, except the Arctic. It is an introduced species in Great Britain, the Canary Islands, the Azores and Madeira.
The wingspan is 17–23 mm. Adults are on wing from May to October in Ontario, March to November in north-eastern North America and year-round in Texas and the west. There are two or more generations per year. The larvae feed on Polygonum species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Acadia National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Dallas | 🇺🇸 United States | |
| 3 | Baltimore | 🇺🇸 United States | |
| 4 | Sacramento | 🇺🇸 United States | |
| 5 | Chicago | 🇺🇸 United States | |
| 6 | Portland | 🇺🇸 United States | |
| 7 | Washington | 🇺🇸 United States | |
| 8 | Philadelphia | 🇺🇸 United States | |
| 9 | Toronto | 🇨🇦 Canada | |
| 10 | Houston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Bent-Lined Carpet sighting in Boston on a given day, based on 26 verified sightings from GBIF citizen-science data. It is the 406th most-seen of the 1200 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.
August and October
In those months about 10% of wildlife watchers report a Bent-Lined Carpet in Boston on a given day, against under 5% in September and November–July, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Bent-Lined Carpet sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
13th of 19
Of the 19 cities where we can rate Bent-Lined Carpet sightings, Boston ranks 13th at under 5%. The best odds are in Austin (United States, about 10%), Dallas (United States, about 10%) and Baltimore (United States, about 10%).
Same family: Geometridae
The closest relatives of the Bent-Lined Carpet that you can see in Boston (family Geometridae, Geometer Moths) are Pale Beauty (about 10%), Single-Dotted Wave (about 10%) and Winter Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bent-Lined Carpet is recorded against all the insects logged in Boston (26 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.
