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Taxonomy of the family Pareidae
Bibliography of the genus Asthenodipsas
Biodiversity of the family Pareidae


Malayan Slug Eaters, Malayan Slug-eating Snakes, Sundaic Snail-eating Snakes

Malaiische Schneckennattern

Malayiske Sneglesnoge

1827 Amblycephalus Kuhl in Boie [not Amblycephalus Zedler 1803 (Cestoda)] (type species: Amblycephalus laevis Boie 1827; syn. Williams & Wallach 1989)
1864 Asthenodipsas Peters (type species: Asthenodipsas Malaccana Peters 1864)
1992 Internatus Rao & Yang (type species: Amblycephalus laevis Boie 1827; syn. Manthey & Grossmann 1997)
2022 Spondylodipsas Poyarkov, Nguyen, Pawangkhanant, Yushchenko, Brakels, Nguyen, Nguyen, Suwannapoom, Orlov & Vogel (type species: Amblycephalus vertebralis Boulenger 1900)
Contents: 9 species, of which 7 (77.8%) are endemic.
Endemism: 0% 100%
Remarks: Both laevis and malaccana were included in the genus Pareas for many years, until Rao & Yang (1992) placed them in a separate genus, which they named Internatus. However, Asthenodipsas, being an older name, has priority over Internatus, as pointed out by Ota (1999). More recently, vertebralis was also transferred to this genus (Grossmann & Tillack 2003).
Distribution: SE. Asia, Malay Archipelago.
Reported from: Brunei, Indonesia (Bangka, Java, Kalimantan, Natuna Islands [Bunguran], Siberut, Sumatra), Malaysia (Sabah, Sarawak, West Malaysia [incl. Penang Island, Seribuat Archipelago (incl. Tioman]), Singapore, Thailand.

Asthenodipsas borneensis

Bornean Dark-necked Slug Eater, (Bornean Slug Eater)

Östliche Dunkelhals-Schneckennatter

Østlig Mørkhalset Sneglesnog

2020 Asthenodipsas borneensis Quah, Grismer, Lim, Anuar & Chan

Remarks: Previously regarded as the Bornean population of malaccana.
Distribution: Brunei, Indonesia (Kalimantan), Malaysia (Sabah, Sarawak).

Asthenodipsas ingeri

Kinabalu Slug Eater, (Inger's Slug Eater)



2021 Asthenodipsas ingeri Quah, Lim & Grismer

Remarks: Presence in Sarawak needs verification, although supported by photographic documentation (Quah, Lim & Grismer 2021).
Distribution: Malaysia (Sabah).

Asthenodipsas jamilinaisi

Tambunan Slug Eater, Sabah Mountain Slender Slug Snake



2019 Asthenodipsas jamilinaisi Quah, Grismer, Lim, Anuar & Imbun

Distribution: Malaysia (Sabah, Sarawak).

Asthenodipsas laevis

Smooth Slug Eater, Striped Slug Eater

Gefleckte Schneckennatter

Glat Sneglesnog

1827 Amblycephalus laevis Boie
Dipsas laevis Schlegel 1837
Pareas laevis Duméril & Bibron 1854
Leptognathus laevis Jan 1863
Internatus laevis Rao & Yang 1992
Asthenodipsas laevis Iskandar & Colijn 2001

Remarks: Reported from northern Laos (e.g., Deuve 1970; David & Vogel 1996; Teynié & David 2010; Wallach, Williams & Boundy 2014), but likely in error (Grismer & Chan-Ard 2012).
Distribution: Indonesia (Bangka, Java, Kalimantan, Natuna Islands [Bunguran], Siberut, Sumatra), Malaysia (Sabah, Sarawak, West Malaysia [incl. Penang Island]), Singapore, Thailand.

Asthenodipsas lasgalenensis

Mirkwood Forest Slug Eater



2013 Asthenodipsas lasgalenensis Loredo, Wood, Quah, Anuar, Greer, Ahmad & Grismer

Distribution: Malaysia (West Malaysia).

Asthenodipsas malaccana

Western Dark-necked Slug Eater, Malayan Slug Eater

Westliche Dunkelhals-Schneckennatter

Vestlig Mørkhalset Sneglesnog

1864 Asthenodipsas Malaccana Peters
Amblycephalus malaccanus Boulenger 1892
Pareas malaccanus Haas 1950
Internatus malaccanus Rao & Yang 1992
1870 Pareas dorsopictus Edeling (Iskandar & Colijn 2001)

Remarks: Previously included the population now assigned to borneensis. Records from Siberut (e.g., Rooij 1922; Haas 1950) refer to laevis (Dring, McCarthy & Whitten 1990).
Distribution: Indonesia (Sumatra), Malaysia (West Malaysia), Thailand.

Asthenodipsas stuebingi

Minduk Sirung Slug Eater, Sabah Mountain Smooth Slug Snake


Minduk Sirung-sneglesnog

2019 Asthenodipsas stuebingi Quah, Grismer, Lim, Anuar & Imbun

Distribution: Malaysia (Sabah).

Asthenodipsas tropidonotus

Sumatra Slug Eater



1923 Amblycephalus tropidonotus Lidth de Jeude
Pareas tropidonotus Haas 1950
Internatus tropidonotus David & Vogel 1996
Asthenodipsas tropidonotus Iskandar & Colijn 2001

Remarks: Previously regarded as a synonym of vertebralis (e.g., Grossmann & Tillack 2003). Revalidated by Loredo, Wood, Quah, Anuar, Greer, Ahmad & Grismer (2013), although others (e.g., Haas 1950; David & Vogel 1996; Iskandar & Colijn 2001) had already regarded it as a valid species, but without discussion.
Distribution: Indonesia (Sumatra).

Asthenodipsas vertebralis

Mountain Slug Eater



1900 Amblycephalus vertebralis Boulenger
Pareas vertebralis Haas 1950
Asthenodipsas vertebralis Grossmann & Tillack 2003

Remarks: Previously included tropidonotus. Records from Sumatra refer to tropidonotus (Loredo, Wood, Quah, Anuar, Greer, Ahmad & Grismer 2013). Presence in Borneo has been disputed (e.g., Grossmann & Tillack 2003), but was confirmed by Quah, Lim & Grismer (2021).
Distribution: Malaysia (Sarawak, West Malaysia [incl. Seribuat Archipelago (incl. Tioman)]).