Pareidae (Slug Snakes) — Wallace's Line

Species in this group

LC

Pareas formosensis

Daily sighting probability ~40% · Likely

LC

Aplopeltura boa

Daily sighting probability ~30% · Possible

LC

Pareas carinatus

Daily sighting probability ~30% · Possible

Asthenodipsas ingeri

Daily sighting probability ~30% · Possible

Asthenodipsas borneensis

Daily sighting probability ~20% · Possible

LC

Asthenodipsas laevis

Daily sighting probability ~20% · Possible

Asthenodipsas stuebingi

Daily sighting probability ~20% · Possible

LC

Asthenodipsas malaccanus

Daily sighting probability ~20% · Possible

Asthenodipsas jamilinaisi

Daily sighting probability ~20% · Possible

Pareas macularius

Daily sighting probability ~10% · With luck

Pareas komaii

Daily sighting probability ~10% · With luck

LC

Pareas margaritophorus

Daily sighting probability ~10% · With luck

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Daily sighting probability by month

Probability-weighted average across the group's species

~20%

Jan

~20%

Feb

~20%

Mar

~20%

Apr

~20%

May

~20%

Jun

~20%

Jul

~20%

Aug

~20%

Sep

~10%

Oct

~30%

Nov

~20%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Slug Snakes

Warmer areas are where this group is recorded most often. Shaded: the known ranges of its 14 species, darker where more of them overlap (GARD, Roll et al. 2017 & Caetano et al. 2022). Our parks Our cities

Parks Ranked

#	Park	Country	Species	Daily sighting probability
1	Kinabalu Park	🇲🇾 Malaysia	6 of 12	~80%
	Blunthead Slug Snake			~30%
	Inger’s Slug Snake			~30%
	🦎 Bornean dark-necked slug snake			~20%
	Smooth Slug Snake			~20%
	Sabah Mountain Smooth Slug Snake			~20%
	Jamil Slug Snake			~20%
2	Cuc Phuong National Park	🇻🇳 Vietnam	1 of 12	~40%
	Formosa Slug Snake			~40%
3	Gunung Leuser National Park	🇮🇩 Indonesia	2 of 12	~40%
	Keeled Slug Snake			~30%
	Malayan Slug Snake			~20%
4	Cat Tien National Park	🇻🇳 Vietnam	1 of 12	~30%
	Keeled Slug Snake			~30%
5	Khao Sok National Park	🇹🇭 Thailand	2 of 12	~30%
	Keeled Slug Snake			~20%
	Mountain Slug Snake			~10%
6	Kaeng Krachan National Park	🇹🇭 Thailand	2 of 12	~30%
	Keeled Slug Snake			~20%
	White-spotted slug snake			~10%
7	Doi Inthanon National Park	🇹🇭 Thailand	2 of 12	~20%
	Mountain Slug Snake			~10%
	Formosan Slug Snake			~10%
8	Danum Valley Conservation Area	🇲🇾 Malaysia	1 of 12	~10%
	Blunthead Slug Snake			~10%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	Jakarta	🇮🇩 Indonesia	1 of 12	~50%
	Keeled Slug Snake			~50%
2	Denpasar	🇮🇩 Indonesia	1 of 12	~30%
	Keeled Slug Snake			~30%
3	Guangzhou	🇨🇳 China	1 of 12	~10%
	White-spotted slug snake			~10%
4	Hong Kong	🇨🇳 China	1 of 12	~10%
	White-spotted slug snake			~10%
5	Bandung	🇮🇩 Indonesia	1 of 12	~10%
	Keeled Slug Snake			~10%
6	Kuala Lumpur	🇲🇾 Malaysia	1 of 12	~10%
	White-spotted slug snake			~10%
7	Singapore	🇸🇬 Singapore	1 of 12	<5%
	White-spotted slug snake			<5%

Slug Snakes

Species in this group

Formosa Slug Snake

Blunthead Slug Snake

Keeled Slug Snake

Inger’s Slug Snake

Bornean dark-necked slug snake

Smooth Slug Snake

Sabah Mountain Smooth Slug Snake

Malayan Slug Snake

Jamil Slug Snake

Mountain Slug Snake

Formosan Slug Snake

White-spotted slug snake

Daily sighting probability by month

When they're spotted

Where to see Slug Snakes

Parks Ranked

Cities Ranked