Cyanophrys longula
In 3 days ~10% in a week ~30%
Cyanophrys longula, the long-winged greenstreak, is a butterfly in the family Lycaenidae. The species was first described by William Chapman Hewitson in 1868. It is found in Mexico, with strays recorded from south-eastern Arizona. It has also been recorded from Hawaii.
The wingspan is 21–30 mm. Adults are on wing from March to May and from August to December in Mexico. The larvae feed on a wide range of plants, including species from the families Asteraceae and Verbenaceae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Mountain Greenstreak sighting in Cumbres de Monterrey National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 252nd most-seen of the 431 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.
October to December
In those months about 10% of wildlife watchers report a Mountain Greenstreak in Cumbres de Monterrey National Park on a given day, against under 5% in January to September, the lowest months. Those are among Cumbres de Monterrey National Park's driest months, with about 55 mm of rain a month against 180 mm in September.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Mountain Greenstreak sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Cumbres de Monterrey National Park, in our data
Cumbres de Monterrey National Park is the only park on Wallace's Line with enough records to rate Mountain Greenstreak sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Mountain Greenstreak that you can see in Cumbres de Monterrey National Park (family Lycaenidae, Gossamer-winged Butterflies) are Reakirt's Blue (about 10%), Ceraunus Blue (about 10%) and Falcate Emesis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Mountain Greenstreak is recorded against all the insects logged in Cumbres de Monterrey National Park (9 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.
