Kaloula mediolineata Smith, 1917

Class: Amphibia > Order: Anura > Family: Microhylidae > Subfamily: Microhylinae > Genus: Kaloula > Species: Kaloula mediolineata

Callula mediolineata Smith, 1917, J. Nat. Hist. Soc. Siam, 2: 224. Syntypes: BMNH 1916.4.17.3 (now 1947.2.10.57, from Nong Pling, Paknampo) and, 1917.5.14.41–44 (now 1947.2.10.58–61, from Prachuap, Kirikam), according to museum records, and 1921.4.1.279–283, according to Parker, 1934, Monogr. Frogs Fam. Microhylidae: 82. Type locality: "Prachuap Kirikan, S. W. Siam [Thailand]".

Kaloula mediolineataParker, 1934, Monogr. Frogs Fam. Microhylidae: 81.

English Names

Siam Narrowmouth Toad (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 90).

White-backed Bullfrog (Nutphund, 2001, Amph. Thailand: 161).

Stripe-back Bullfrog (Nutphund, 2001, Amph. Thailand: 161).

Median-striped Bullfrog (Chan-ard, 2003, Photograph. Guide Amph. Thailand: 98).

Middle Back-stripe Bullfrog (Nguyen, Ho, and Nguyen, 2005, Checklist Amph. Rept. Vietnam: 43).

Siam Bullfrog (Poyarkov, Nguyen, Popov, Geissler, Pawangkhanant, Neang, Suwannapoom, and Orlov, 2021, Russ. J. Herpetol., 28 (3A): 39). 


Southern mainland (non-peninsular) Thailand and into northern Cambodia (Phnom Kulen National Park) and southern Vietnam (Dac Lac Province and Phu Qui Island, Bin Thuan Province) through intervening Laos.


See accounts by Bourret, 1942, Batr. Indochine: 485–486, and Taylor, 1962, Univ. Kansas Sci. Bull., 43: 566–569. Heyer, 1971, Fieldiana, Zool., 58: 83–91, described the tadpole from Thailand. Orlov, Murphy, Ananjeva, Ryabov, and Ho, 2002, Russ. J. Herpetol., 9: 99, provided the Vietnam distribution without reference to voucher specimens. Nutphund, 2001, Amph. Thailand: 161, provided a brief characterization and photograph. Stuart, 1999, in Duckworth et al. (eds.), Wildlife in Lao PDR: 49, reported the species in Laos. Chan-ard, 2003, Photograph. Guide Amph. Thailand: 98–99, provided a very brief account, map for Thailand, and photograph. See statement of geographic range, habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 626. Chan-ard, Cota, and Makchai, 2011, Amph. E. Region Thailand: 40–41, provided a photograph and brief account for eastern Thailand, and (p. 130), detailed the distribution in Thailand. Phung, Nguyen, Rauhaus, and Ziegler, 2013, Herpetol. Notes, 6: 463–465, provided a record from Phu Qui Island, Binh Thuan Province, southern Vietnam. Niyomwan, Srisom, and Pawangkhanant, 2019, Field Guide Amph. Thailand: 214–215, provided a brief account (photographs, habitat, and range) for Thailand (in Thai). Geissler, Hartmann, Ihlow, Neang, Seng, Wagner, and Böhme, 2019, Cambodian J. Nat. Hist., 2019: 40–63, provided a record from Phnom Kulen National Park, northern Cambodia. Vassilieva, 2021, Zootaxa, 4952: 71–86, described larval morphology. 

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