Batia lunaris
In 3 days ~10% in a week ~30%
Batia lunaris, the lesser tawny crescent, is a species of gelechioid moth. It belongs to the subfamily Oecophorinae of the concealer moth family (Oecophoridae). It is the type species of the genus Batia, which is sometimes treated as monotypic. But this is not well warranted, as some other species usually placed there differ little from the Lesser Tawny Crescent.
Its wingspan is 7–10 mm, and in general the imagines (adults) resemble the close relative B. lambdella, but are only two-thirds the size of that species. Their forewings are dark ochre, slightly darker at the tips and the hairy fringe surrounding them. At the border between the light and dark parts there is a dark blotch at the dorsal margin, which forms a continuous pointed patch if the wings are laid back while the moth rests.
Meyrick- Head whitish, mixed with dark fuscous. Forewings yellow, towards dorsum orange, costa from base to 2/3 and termen broadly ferruginous; a narrow fuscous costal streak from base to 2/3; a large triangular blackish spot before tornus, its apex irregularly produced towards apex of wing. Hindwings ovate-lanceolate, rather dark grey.
It is found in Europe, where it... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Lesser Tawny Crescent sighting in Portland on a given day, based on 33 verified sightings from GBIF citizen-science data. It is the 177th most-seen of the 507 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.
June and July
In those months about 10% of wildlife watchers report a Lesser Tawny Crescent in Portland on a given day, against under 5% in August to May, the lowest months. Those are among Portland's driest months, with about 35 mm of rain a month against 250 mm in December.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Lesser Tawny Crescent 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.
2nd of 7
Of the 7 cities where we can rate Lesser Tawny Crescent sightings, Portland ranks 2nd at under 5%. The best odds are in Liverpool (United Kingdom, about 10%).
GBIF citizen-science records
It is estimated from how often the Lesser Tawny Crescent is recorded against all the insects logged in Portland (33 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.
