Macrosoma amaculata
In 3 days ~20% in a week ~40%
Macrosoma amaculata is moth-like butterfly described by Malcolm Scoble in 1990. It belongs to the family Hedylidae. The species is found in the central western and northwestern Costa Rica: Guanacaste Province from 200 to 2,100 meters above sea level on both slopes of the Cordillera de Guanacaste, Tilarán and Talamanca, in the Osa Peninsula and the Valley of Talamanca.
The species is sexually dimorphic. M. amaculata has wings of greyish brown ground color. The apex of the forewing is dark brown and weakly emarginate with a notch which is present in both sexes (more pronounced in females). The edge of the apical patch is without white markings of the male whereas the female has a white patch of moderately sized close to the apex with two adjacent very small white spots. The hindwing lacks glassy patch at the base for both sexes; a dark brown color strip runs from the apex to lathe, parallel to the middle area.
The length of the forewing of male is 20 mm. The length of the forewing of female is 22 mm. Following are the characteristics of the genitalia: The Gnathos is broad and denticulate. The medial component... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Macrosoma amaculata sighting in Monteverde Cloud Forest Reserve on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 148th most-seen of the 506 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
September and October
In those months about 20% of wildlife watchers report a Macrosoma amaculata in Monteverde Cloud Forest Reserve on a given day, against under 5% in June–July and December–March, the lowest months. Those are among Monteverde Cloud Forest Reserve's wettest months, with about 400 mm of rain a month against 45 mm in March.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Macrosoma amaculata sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Only Monteverde Cloud Forest Reserve, in our data
Monteverde Cloud Forest Reserve is the only park on Wallace's Line with enough records to rate Macrosoma amaculata sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Macrosoma
The closest relatives of the Macrosoma amaculata that you can see in Monteverde Cloud Forest Reserve (genus Macrosoma) are Macrosoma cascaria (about 10%) and Macrosoma rubedinaria (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Macrosoma amaculata is recorded against all the insects logged in Monteverde Cloud Forest Reserve (18 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.
