Long-Tailed Metalmark

Long-Tailed Metalmark

Rhetus arcius

Daily sighting probability ~20% · Possible
at Ostional Wildlife Refuge

In 3 days ~40% in a week ~70%

8 Verified sightings at Ostional Wildlife Refuge From 2019 to 2026
39 In all 5 parks
July Best month
☀️ Diurnal When it's spotted

About the Long-Tailed Metalmark

Rhetus arcius, the long-tailed metalmark, s a species of Neotropical butterfly, first described in Carl Linnaeus' 1763 Centuria Insectorum. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Ostional Wildlife Refuge 🇨🇷 Costa Rica
~20%
2 Ría Lagartos Biosphere Reserve 🇲🇽 Mexico
~10%
3 Lago de Yojoa 🇭🇳 Honduras
~10%
4 Farallones de Cali National Natural Park 🇨🇴 Colombia
~10%
5 Cañón del Sumidero National Park 🇲🇽 Mexico
~10%

Cities Where Found

# City Country Daily sighting probability
1 Tegucigalpa 🇭🇳 Honduras
~20%
2 Cali 🇨🇴 Colombia
~20%
3 San Pedro Sula 🇭🇳 Honduras
~10%
4 Medellín 🇨🇴 Colombia
~10%
5 San José 🇨🇷 Costa Rica
~10%
6 San Salvador 🇸🇻 El Salvador
~10%
7 Guatemala City 🇬🇹 Guatemala
~10%
8 São Paulo 🇧🇷 Brazil
~10%
9 Rio de Janeiro 🇧🇷 Brazil
<5%

Before you go

What are the chances of seeing a Long-Tailed Metalmark in Ostional Wildlife Refuge?

Possible

About 20% of wildlife watchers report a Long-Tailed Metalmark sighting in Ostional Wildlife Refuge on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 28th most-seen of the 47 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.

When is the best time to see a Long-Tailed Metalmark in Ostional Wildlife Refuge?

July

In that month about 30% of wildlife watchers report a Long-Tailed Metalmark in Ostional Wildlife Refuge on a given day, against under 5% in August to June, the lowest months.

What time of day is best to see a Long-Tailed Metalmark?

Between 10 am and 1 pm

Across all the parks we cover, that three-hour window holds the most Long-Tailed Metalmark sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is Ostional Wildlife Refuge the best place to see a Long-Tailed Metalmark?

Yes

Of the 5 parks where we can rate Long-Tailed Metalmark sightings, Ostional Wildlife Refuge has the highest daily chance: about 20%. Next come Ría Lagartos Biosphere Reserve (Mexico, about 10%) and Lago de Yojoa (Honduras, about 10%).

Which relatives of the Long-Tailed Metalmark live in Ostional Wildlife Refuge?

Same order: Lepidoptera

The closest relatives of the Long-Tailed Metalmark that you can see in Ostional Wildlife Refuge (order Lepidoptera, Butterflies and Moths) are Banded Peacock (about 60%), Malachite (about 40%) and Gulf Fritillary (about 30%), with each one's daily chance of a sighting.

Where does the Long-Tailed Metalmark sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Long-Tailed Metalmark is recorded against all the insects logged in Ostional Wildlife Refuge (8 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.

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