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

Hylarana maosonensis Bourret, 1937

Class: Amphibia > Order: Anura > Family: Ranidae > Genus: Hylarana > Species: Hylarana maosonensis

Hylarana maosonensis Bourret, 1937, Annexe Bull. Gen. Instr. Publique, Hanoi, 1937: 36. Syntypes: MNHNP 38.46–53, 48.140–143 (formerly in LZUH), according to Guibé, 1950 "1948", Cat. Types Amph. Mus. Natl. Hist. Nat.: 42, CAS-SU 6392, FMNH (2 specimens, according to Marx, 1976, Fieldiana, Zool., 69: 54). Type locality: "Mao-Son", Tonkin, Vietnam.

Rana (Hylarana) maosonensis — Bourret, 1942, Batr. Indochine: 351; Dubois, 1987 "1986", Alytes, 5: 42, by implication.

Rana (Hylorana) maosonensis — Guibé, 1950 "1948", Cat. Types Amph. Mus. Natl. Hist. Nat.: 42.

Rana (Sylvirana) maosonensis — Dubois, 1992, Bull. Mens. Soc. Linn. Lyon, 61: 326.

Hylarana maosonensis — Chen, Murphy, Lathrop, Ngo, Orlov, Ho, and Somorjai, 2005, Herpetol. J., 15: 237, by implication; Che, Pang, Zhao, Wu, Zhao, and Zhang, 2007, Mol. Phylogenet. Evol., 43: 3, by implication; Dubois, Ohler, and Pyron, 2021, Megataxa, 5: 423.

Sylvirana maosonensis — Frost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 297: 370; Fei, Ye, and Jiang, 2010, Herpetol. Sinica, 12: 34; Oliver, Prendini, Kraus, and Raxworthy, 2015, Mol. Phylogenet. Evol., 90: 191..

Hylarana (Sylvirana) maosonensis — Jiang, Mo, Xie, and Ye, 2007, Herpetol. Sinica, 11: 5.

Hylarana (Pterorana) maosonensis — Wu, Xu, Suwannapoom, Nguyen, Murphy, Papenfuss, Lathrop, Kilunda, Gao, Yuan, Chen, Zhang, Zhao, Wang, Rahman, Nneji, Zhao, Wang, Jin, Zhang, and Che, 2024 "2025", Mol. Phylogenet. Evol., 108223: 1–11, by implication.

Common Names

Maoson Stream Frog (Poyarkov, Nguyen, Popov, Geissler, Pawangkhanant, Neang, Suwannapoom, and Orlov, 2021, Russ. J. Herpetol., 28 (3A): 53).

Mao-Son Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 108).

Maoson Frog (Fei, Ye, and Jiang, 2012, Colored Atlas Chinese Amph. Distr.: 356).

Distribution

Mountains of northeastern Vietnam (Tuyen Quang, Cao Bang, Yen Bai, Vinh Phu, Bac Thai, Bac Khan, Ha Bac, Quang Ninh, Bac Giang, Hai Hung, Ha Tay, Son La, Ninh Binh, and Hoa Binh provinces) and central Vietnam (Quang Binh Province), Annamite range in Laos (Bolikhamxay and Khammouan Provinces), and in southern Guangxi, China.

Geographic Occurrence

Natural Resident: China, People's Republic of, Laos, Vietnam

Comment

Prior to the revision of Frost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 297, placed in the Section Hylarana, subsection Hydrophylax, subgenus Sylvirana of Dubois, 1992, Bull. Mens. Soc. Linn. Lyon, 61: 326. Reviewed by Bourret, 1942, Batr. Indochine: 351–352. See comments by Inger, Orlov, and Darevsky, 1999, Fieldiana, Zool., N.S., 92: 20. Orlov, Murphy, Ananjeva, Ryabov, and Ho, 2002, Russ. J. Herpetol., 9: 90, provided a statement of range. Stuart, 1999, in Duckworth et al. (eds.), Wildlife in Lao PDR: 48, noted the species in the Annamite Mountains of Laos. Nguyen, Ho, and Nguyen, 2005, Checklist Amph. Rept. Vietnam: 29, provided specific localities for Vietnam and (p. 149) a photograph. Stuart, 2005, Herpetol. Rev., 36: 478, provided a specific locality for Laos. Bain, Nguyen, and Doan, 2007, Herpetol. Rev., 38: 110, provided a record for Bac Kan Province, Vietnam, and briefly discussed the range. Hecht, Pham, Nguyen, Nguyen, Bonkowski, and Ziegler, 2013, Biodiversity J., 4: 507–552, reported a record from Tay Yen Tu Nature Reserve, Bac Giang Province, northeastern Vietnam and discussed the range. Hendrix, Nguyen, Böhme, and Ziegler, 2008, Herpetol. Notes, 1: 23–31, provided a record from Quang Binh Province, Vietnam. Jiang, Mo, Xie, and Ye, 2007, Herpetol. Sinica, 11: 5–8, reported the species from Shiwandashan, southern Guangxi, China. Gawor, Hendrix, Vences, Böhme, and Ziegler, 2009, Zootaxa, 2051: 1–25, compared larval morphology this species to other species similar to Hylarana nigrovittata. Fei, Hu, Ye, and Huang, 2009, Fauna Sinica, Amph. 3: 1140–1143, provided an account, figures, and map for China and placed it in their Hylarana (Sylvirana) latouchii group. Fei, Ye, and Jiang, 2010, Colored Atlas of Chinese Amph.: 316, provided a brief account including photographs. Fei, Ye, and Jiang, 2012, Colored Atlas Chinese Amph. Distr.: 356, provided an account (as Sylvirana maosonensis), photographs, and a range map for China. Pham, Do, Ngo, Tran, Ziegler, and Nguyen, 2020, Check List, 16: 1025–1041, provided a record from Hai Ha District, Quang Ninh Province, Vietnam, on the Guangxi, China, border. Stuart, Seateun, Sivongxay, and Phimmachak, 2025 "2024", in Wildlife Lao PDR: 41, summarized literature, taxonomy, habitat, and detailed range for Laos.

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For additional information see AmphibiaWeb report
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For information on distribution, habitat, and conservation see the Map of Life
For related information on conservation and images as well as observations see iNaturalist
For additional information specific to China see Amphibia China