Slender Hognose Viper

Slender Hognose Viper

Porthidium ophryomegas

Silhouette: Steven Traver · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~50% · Likely
at Santa Rosa National Park
60 Verified sightings at Santa Rosa National Park From 2019 to 2026
72 Verified sightings across all 4 parks From 2019 to 2026
June Best month highest sighting rate
🌅 Crepuscular When it's spotted at dawn and dusk

About the Slender Hognose Viper

Common names: slender hognosed pitviper, western hog-nosed viper. Porthidium ophryomegas is a venomous pitviper species found in Central America. No subspecies are currently recognized. Adults usually grow to a length of 40–60 cm (16–24 in) and have a relatively slender build. Females grow larger than males and are often more than 60 cm (24 in) in length, while males are usually about 45 cm (18 in). One exceptional specimen, a female, was reported to measure 77 cm (30 in).

The color pattern consists of a tan, brown, gray or grayish-brown ground color overlaid with a narrow white, yellow or rust brown vertebral stripe and 24–40 dark brown to almost black blotches that oppose or alternate across the vertebral line. The blotches have thin white borders that extend at roughly a right angle from the vertebral line.

Found in Central America in Guatemala, El Salvador, Honduras, Nicaragua and Costa Rica. The type locality given is "les terres chaudes du versant occidental de la Cordillère Escuintla (Guatémala)" (= warm regions on western slope of Cordillera, Escuintla, Guatemala).

Occurs in seasonally dry forests, including tropical dry... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Santa Rosa National Park 🇨🇷 Costa Rica
~50%
2 Palo Verde National Park 🇨🇷 Costa Rica
~20%
3 Las Baulas Marine National Park 🇨🇷 Costa Rica
Insufficient data
4 Monteverde Cloud Forest Reserve 🇨🇷 Costa Rica
Insufficient data

Quick answers

What are the chances of seeing a Slender Hognose Viper in Santa Rosa National Park?

About 50% of wildlife watchers report a Slender Hognose Viper sighting in Santa Rosa National Park, based on 60 verified sightings from GBIF citizen-science data.

When is the best time to see Slender Hognose Viper in Santa Rosa National Park?

June has the highest sighting rate for Slender Hognose Viper in Santa Rosa National Park in our monthly data.

← Back to Santa Rosa National Park