Search tool	Example of search string in box	What that means to the database
* = "wildcard". Allows a partial letter string to be entered and implies either no or various extension on this letter string	Hyl*	Will find all uses of "Hyl . . ." anywhere in a record: e.g., Hylarana, Hyla, Hylidae, Hylinae, Hylaedactyla.
* = "wildcard". Allows a partial letter string to be entered and implies either no or various extension on this letter string	*Hyla	Will find all uses of ". . . hyla" anywhere in a record: e.g., Hyla, Hylidae, Plectrohyla, Ptychadena hylaea, Adenomera hylaedactyla
	Hyla	Will find all records that contain stand-alone uses of Hyla: e.g., Hyla, Hyla arenicolor
Strings of words without quotation marks	Lithobates pipiens	Interprets this as "Lithobates OR pipiens" so will find the union of all records that contain either "Lithobates" or "pipiens": e.g., Lithobates omiltemanus, Hylorana pipiens
Strings of word with quotation marks	"Lithobates pipiens"	Interprets this as "Lithobates AND pipiens" so will return all records that have the character string "Lithobates pipiens" anywhere within a record: e.g., all members of the Lithobates pipiens complex.
AND statement. Means that the results of the search must include both words held together by an AND	Lithobates AND pipiens	Same as "Lithobates pipiens"
OR statement. Means that the results of the search will all records that have either of the terms held together by an OR	Lithobates OR "Costa Rica"	Recovers all records that contain the word "Lithobates" or "Costa Rica": 402 records inasmuch as this will include all records for the entire amphibian fauna of Costa Rica
Combining Boolean operators within the Basic Search box (AND, OR, NOT, quotation marks)	Lithobates AND "Costa Rica" NOT forreri	Recovers only records that contain the word Lithobates AND "Costa Rica", but excludes any record that contains the word "forreri" in any part of the record: 9 records
Printable HELP file

Search tool	Example of search string in box	What that means to the database
* = "wildcard". Allows a partial letter string to be entered and implies either no or various extension on this letter string	Hyl*	Will find all uses of "Hyl . . ." anywhere in a record: e.g., Hylarana, Hyla, Hylidae, Hylinae, Hylaedactyla.
* = "wildcard". Allows a partial letter string to be entered and implies either no or various extension on this letter string	*Hyla	Will find all uses of ". . . hyla" anywhere in a record: e.g., Hyla, Hylidae, Plectrohyla, Ptychadena hylaea, Adenomera hylaedactyla
Single word	Hyla	Will find all records that contain stand-alone uses of Hyla: e.g., Hyla, Hyla arenicolor
Strings of words without quotation marks	Lithobates pipiens	Interprets this as "Lithobates OR pipiens" so will find the union of all records that contain either "Lithobates" or "pipiens": e.g., Lithobates omiltemanus, Hylorana pipiens
Strings of word with quotation marks	"Lithobates pipiens"	Interprets this as "Lithobates AND pipiens" so will return all records that have the character string "Lithobates pipiens" anywhere within a record: e.g., all members of the Lithobates pipiens complex.
AND statement. Means that the results of the search must include both words held together by an AND	Lithobates AND pipiens	Same as "Lithobates pipiens"
OR statement. Means that the results of the search will all records that have either of the terms held together by an OR	Lithobates OR "Costa Rica"	Recovers all records that contain the word "Lithobates" or "Costa Rica": 402 records inasmuch as this will include all records for the entire amphibian fauna of Costa Rica
Combining Boolean operators within the Basic Search box (AND, OR, NOT, quotation marks)	Lithobates AND "Costa Rica" NOT forreri	Recovers only records that contain the word Lithobates AND "Costa Rica", but excludes any record that contains the word "forreri" in any part of the record: 9 records
Printable HELP file

Alcalus tasanae (Smith, 1921)

Class: Amphibia > Order: Anura > Family: Ceratobatrachidae > Subfamily: Alcalinae > Genus: Alcalus > Species: Alcalus tasanae

Rana pullus Smith, 1921, J. Fed. Malay States Mus., 10: 197. Syntypes: BMNH (11 specimens), by original designation; this being BMNH 1947.2.2.69–84 (formerly 1921.4.1.238–253) according to museum records. Type locality: "Tasan, 25 miles S. W. Chumporn, Peninsular Siam [Thailand]". Preoccupied by Rana gracilis var. pulla Stoliczka, 1870.

Rana tasanae Smith, 1921, J. Nat. Hist. Soc. Siam, 4: 193. Replacement name for Rana pullus Smith, 1921.

Rana (Discodeles) tasanae — Smith, 1930, Bull. Raffles Mus., 3: 102; Bourret, 1942, Batr. Indochine: 376.

Discodeles tasanae — Bourret, 1942, Batr. Indochine: 99.

Ingerana (Ingerana) tasanae — Dubois, 1987 "1986", Alytes, 5: 65.

Alcalus tasanae — Yan, Jiang, Jin, Suwannapoom, Li, Vindum, Brown, and Che, 2016, Zool. Res., Kunming, 37: 11–12.

English Names

Tasan Eastern Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 99).

Tha San Frog (Nutphund, 2001, Amph. Thailand: 102).

Tasan Frog (Chan-ard, 2003, Photograph. Guide Amph. Thailand: 112).

Tha San Dwarf Cascadefrog (Zug and Mulcahy, 2020 "2019", Amph. Rept. S. Tanintharyi: 30).

Tasan Dwarf Frog (Poyarkov, Nguyen, Popov, Geissler, Pawangkhanant, Neang, Suwannapoom, and Orlov, 2021, Russ. J. Herpetol., 28 (3A): 21).

Tasan Dwarf Cascadefrog (Zug, 2022, Smithson. Contrib. Zool., 653: 16).

Distribution

Southeastern mainland Myanmar (Kayah, Kayin) and southern peninsular Myanmar (Mon, Tanintharyi) into northern (Kachin), western (Kanchanaburi) and central peninsular Thailand (Chumphon, Ranong, Surat Thani, and Phag Nga provinces).

Comment

Closely related to Rana beddomii according to the original publication. See comment under Rana beddomii. Discussed by Bourret, 1942, Batr. Indochine: 376–377. See account by Taylor, 1962, Univ. Kansas Sci. Bull., 43: 456–459. Nutphund, 2001, Amph. Thailand: 102, provided a brief characterization (as Rana tasanae) and photograph (which Ohler, 2003, Alytes, 21: 101, did not consider identifiable beyond the association with the genus Limnonectes). Chan-ard, 2003, Photograph. Guide Amph. Thailand: 112–113, provided a very brief account, map for Thailand, and photograph. See photograph, map, description of geographic range and habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 481. Chan-ard, Cota, and Makchai, 2011, Amph. E. Region Thailand: 133, detailed the distribution in Thailand. Yan, Jiang, Jin, Suwannapoom, Li, Vindum, Brown, and Che, 2016, Zool. Res., Kunming, 37: 9, reported the species from Kachin and Tanintharyi states, Myanmar. Mulcahy, Lee, Miller, Chand, Thura, and Zug, 2018, ZooKeys, 757: 85–162, a record from Tanintharyi Division, Myanmar. Niyomwan, Srisom, and Pawangkhanant, 2019, Field Guide Amph. Thailand: 308–309, provided a brief account (description, photographs, habitat, and range) for Thailand (in Thai). Zug and Mulcahy, 2020 "2019", Amph. Rept. S. Tanintharyi: 30–31, provided a brief account for South Tanintharyi, peninsular Myanmar. Zug, 2022, Smithson. Contrib. Zool., 653: 16, discussed identification, habitat, and range in Myanmar.

External links:

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For additional sources of information from other sites search Google
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To search the NIH genetic sequence database, see GenBank
For additional information see AmphibiaWeb report
For information on conservation status and distribution see the IUCN Redlist
For related information on conservation and images as well as observation see iNaturalist
For access to available specimen data for this species, from over 350 scientific collections, go to Vertnet.