Sumichrast's Vesper Rat
Nyctomys sumichrasti
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassMammalia (Mamífers)
- OrderRodentia (Rosegadors)
- FamilyCricetidae (Hamsters, Voles, Lemmings, and Allies)
- GenusNyctomys
- SpeciesNyctomys sumichrasti (Sumichrast's Vesper Rat)
Closest Relatives at Arenal Volcano National Park
Short-Nosed Harvest Mouse
Reithrodontomys brevirostris
Watson's climbing rat
Tylomys watsoni
Southern Cotton Rat
Sigmodon hirsutus
Variegated Squirrel
Sciurus variegatoides
Central American Agouti
Dasyprocta punctata
Red-tailed Squirrel
Sciurus granatensis
Mexican Hairy Dwarf Porcupine
Sphiggurus mexicanus
Central American Dwarf Squirrel
Microsciurus alfari
Deppe's Squirrel
Sciurus deppei
Spotted Paca
Cuniculus paca
Nicaraguan Pocket Gopher
Orthogeomys cherriei
Armored Rat
Hoplomys gymnurus
📅 Monthly Probability
🌙 When They're Spotted
Most active during nighttime hours (6pm–6am) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 2 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 3 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 4 | Cusuco National Park | 🇭🇳 Honduras | |
| 5 | Pico Bonito National Park | 🇭🇳 Honduras | |
| 6 | Gandoca-Manzanillo Wildlife Refuge | 🇨🇷 Costa Rica | |
| 7 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 8 | Piedras Blancas National Park | 🇨🇷 Costa Rica | |
| 9 | Rincón de la Vieja National Park | 🇨🇷 Costa Rica | |
| 10 | Masaya Volcano National Park | 🇳🇮 Nicaragua | |
| 11 | Santa Rosa National Park | 🇨🇷 Costa Rica | |
| 12 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 13 | Cerro Azul Meámbar National Park | 🇭🇳 Honduras | |
| 14 | Montes Azules Biosphere Reserve | 🇲🇽 Mexico | |
| 15 | Carara National Park | 🇨🇷 Costa Rica | |
| 16 | Calakmul Biosphere Reserve | 🇲🇽 Mexico | |
| 17 | Corcovado National Park | 🇨🇷 Costa Rica | |
| 18 | La Amistad International Park (Panama) | 🇵🇦 Panama |
Quick answers
What are the chances of seeing a Sumichrast's Vesper Rat in Arenal Volcano National Park?
About 7% of visitor-days record a Sumichrast's Vesper Rat sighting in Arenal Volcano National Park, based on 6 observer-days of citizen-science data from GBIF.
When is the best time to see Sumichrast's Vesper Rat in Arenal Volcano National Park?
January has the highest sighting rate for Sumichrast's Vesper Rat in Arenal Volcano National Park in our monthly data.