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Squamata · ColubridaeEntry 2,430 of 21,572
Atractus pachacamac

Reptilia · Squamata

Atractus pachacamacMelo-Sampaio, Passos, Prudente, Venegas, Torres-Carvajal, 2021

Photograph by Benjamin Hidalgo, CC BY, via iNaturalist

A meat-eating snake from the Neotropic region, reaching 695 mm nose to tail.

No English name has been recorded for this species.

ReptiliaSquamataColubridaeAtractus

We do not have enough on this species yet

Catalogue of Life records this animal’s name, its family and where it sits in the tree of life. Beyond that, only 16 facts are on record — no diet, no lifespan, nothing we would be willing to publish as an entry.

So this page waits here rather than pretending to be one. It is not listed and not submitted to search engines. If you know this animal and can point us at a published source, we would rather have it right than have it soon.

Grows to
695mm
greatest recorded
Eats
Carnivorous
Weighs up to
75.87g
greatest
Body length across Colubridae

Longer than 51% of all colubrid snakes anyone has measured.

51% of 2,008 species are smaller49% larger
98 mmthe whole family, smallest to largest3,800 mm

The bar is the rank itself: its length is the share of the family this animal exceeds. The chart below is the family’s real spread, on a logarithmic scale because body length here runs from 98 to 3,800 mm. The solid rule is this animal. Every bar is a count of real species, and nothing on this figure is estimated.

What is known

16 sourced facts, each taken from a named scientific dataset. How to read these.

Cited from a dataset unless a row is marked otherwise.

Standing in the world

Still living
Extant

The animal itself

Limbs
None

Size

Length snout to vent · greatest recorded
620mm2 ft

Melo-Sampaio et al. 2021: "long body in females (maximum 620 mm SVL) and moderately long in males (maximum 460 mm SVL);" and "Quantitative variation (n = 28): Largest female 620 mm SVL, 75 mm TL; largest male 460 mm SVL, 87 mm TL"

Length nose to tail · greatest recorded
695mm2 ft 3 in

snakes only in this source

Body mass · greatestcomputed
75.87g2.7 oz

computed from length by a family-level allometric equation, not weighed

How it lives

Diet
Carnivorous

"Camper and Zart (2014) reported earthworms in the diet of this species." (Melo-Sampaio et al. 2021)

Region
Neotropic
Mainland or island
Mainland
Elevation · above sea level
210–1720m

Melo-Sampaio et al. 2021 (217-1720)

Naming and history

Suborder
Serpentes
Infraorder
Alethinophidia
Subspecies
No
Described by
Melo-Sampaio, Passos, Prudente, Venegas, Torres-Carvajal
Moved to another genus · since it was first described
No
Described in
2021
Type locality
Ecuador

What nobody knows

These are not gaps in our research. No scientific dataset records them for this species — and saying so is information you cannot get from a reference that simply leaves a field out.

  • Length snout to vent · adult female mean
  • Length snout to vent · adult male mean
  • Length snout to vent · adult mean
  • Female length · mean, nose to tail
  • Length nose to tail · adult male mean
  • Length nose to tail · adult mean
  • Largest female · snout to vent
  • Largest male · snout to vent
  • Largest female · shell length
  • Largest male · shell length
  • Hatchling length · snout to vent
  • Hatchling length · nose to tail
  • Largest juvenile · snout to vent
  • Largest juvenile · shell length
  • Egg length
  • Egg width
  • Body mass · a typical adult
  • Body mass · adult female, mean
  • Body mass at hatching
  • Longest recorded life
  • Preferred body temperature · chosen in a laboratory gradient
  • Body temperature when active · measured in the wild
  • Eats arthropods
  • Eats vertebrates
  • Eats plant matter
  • How it hunts
  • Active
  • Where it lives
  • Reproduction
  • How the young develop
  • Gestation or incubation
  • Average clutch
  • Smallest clutch recorded
  • Largest clutch recorded
  • Mean clutch · smallest reported
  • Mean clutch · largest reported
  • Clutches in a year
  • Clutches a year · fewest
  • Clutches a year · most
  • First breeds from · youngest recorded
  • First breeds by · oldest recorded
  • Hatchling length · smallest recorded
  • Hatchling length · largest recorded
  • Age at first breeding · female
  • Mature from · youngest recorded
  • Mature by · oldest recorded
  • Size at maturity · smallest recorded
  • Size at maturity · largest recorded
  • Venomous
  • Fangs
  • Body temp in the wild · lowest mean recorded
  • Body temp in the wild · highest mean recorded
  • Colour on the back
  • Pattern on the back
  • Pupil
  • Sex decided by
  • Conservation status
  • Status assessed · the year the Red List last looked
  • Population trend
  • Red List criteria
  • Biome
  • Active season · shortest recorded
  • Active season · longest recorded
  • Density · lowest recorded
  • Density · highest recorded
  • Home range · largest recorded
  • Habitat
  • Active in
  • Range size

Others in Colubridae

Sources

  1. Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
  2. Catalogue of Life (dataset 3LR), used under CC BY.
  3. Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.