Cacosternum nanum Boulenger, 1887

Class: Amphibia > Order: Anura > Family: Pyxicephalidae > Subfamily: Cacosterninae > Genus: Cacosternum > Species: Cacosternum nanum

Cacosternum nanum Boulenger, 1887, Ann. Mag. Nat. Hist., Ser. 5, 20: 52. Syntypes: BMNH (2 specimens), by original designation. Type locality: "Vleis, Kaffraria", Cape Province, South Africa. Placed on the Official List of Specific Names in Zoology by Opinion 1921, Anonymous, 1999, Bull. Zool. Nomencl., 56: 96-100.

Cacosternum boettgeri albiventer Hewitt, 1926, Ann. Natal Mus., 5: 438. Holotype: NMP, by original designation. Type locality: "Marianhill, Natal", Rep. South Africa. Synonymy by Poynton, 1964, Ann. Natal Mus., 17: 148.

Cacosternum magnaglandiferus Inger, 1959, in Hanström et al. (eds.), S. Afr. Animal Life: 523. Holotype: ZMLU 265, by original designation. Type locality: "Storms River mouth, Tzitzikama Forest, Cape Province", Rep. South Africa. Synonymy by Poynton, 1964, Ann. Natal Mus., 17: 149.

Cacosternum nanum nanumPoynton, 1963, Ann. Natal Mus., 15: 323; Poynton, 1964, Ann. Natal Mus., 17: 174.

Cacosternum poyntoni Lambiris, 1988, S. Afr. J. Zool., 23: 63. Holotype: NMP 1036 (Type no. 3828), by original designation. Type locality: "Carter's Nursery, Town Bush Valley, Pietermaritzburg, Natal, South Africa (29° 33′ 30″ S/30° 20′ 18″ E), at an altitude of 800 m". Synonymy by Channing, Schmitz, Burger, and Kielgast, 2013, Zootaxa, 3701: 534. 

English Names

Dainty Frog (Wager, 1965, Frogs S. Afr.: 167).

Bronze Caco (Passmore and Carruthers, 1978, J. Herpetol. Assoc. Afr., 19: 6; Passmore and Carruthers, 1979, S. Afr. Frogs: 184; Du Preez and Carruthers, 2009, Compl. Guide Frogs S. Afr.: 372).

Small Froglet (Van Dijk, 1978, J. Herpetol. Assoc. Afr., 17: 16).

Dark-throated Froglet (Van Dijk, 1978, J. Herpetol. Assoc. Afr., 17: 16).

Dainty Frog (Passmore and Carruthers, 1979, S. Afr. Frogs: 184).

Mozambique Metal Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 98).

Dwarf Dainty Frog (Channing, 2001, Amph. Cent. S. Afr.: 291; Channing, Schmitz, Burger, and Kielgast, 2013, Zootaxa, 3701: 535). 

Bronze Caco (Scott, 2004, in Minter et al. (eds.), Atlas Frogs S. Afr. Lesotho and Swaziland: 232).

Bronze Dainty Frog (Scott, 2004, in Minter et al. (eds.), Atlas Frogs S. Afr. Lesotho and Swaziland: 232 [alternative name]).

Dwarf Dainty Frog (Scott, 2004, in Minter et al. (eds.), Atlas Frogs S. Afr. Lesotho and Swaziland: 232 [alternative name]).

Nursery Metal Frog (Cacosternum poyntoni [no longer recognized]:Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 98).

Poynton's Caco (Cacosternum poyntoni [no longer recognized]: Minter, 2004, in Minter et al. (eds.), Atlas Frogs S. Afr. Lesotho and Swaziland: 235; Du Preez and Carruthers, 2009, Compl. Guide Frogs S. Afr.: 378).

Distribution

Southern Mozambique; eastern Transvaal midlands, Natal, and eastern and southern Cape Province, Rep. South Africa; Lesotho.

Comment

See accounts by Poynton, 1964, Ann. Natal Mus., 17: 147-148, Poynton and Broadley, 1985, Ann. Natal Mus., 27: 174-175, Lambiris, 1988, Lammergeyer, 39: 112-113, Channing, 2001, Amph. Cent. S. Afr.: 291-292, and Du Preez and Carruthers, 2009, Compl. Guide Frogs S. Afr.: 372-373. Removed from the synonymy of Cacosternum boettgeri by Poynton, 1964, Ann. Natal Mus., 17: 148, where it had been placed by Boulenger, 1910, Ann. S. Afr. Mus., 5: 533. Scott, 2004, in Minter et al. (eds.), Atlas Frogs S. Afr. Lesotho and Swaziland: 232-233, provided an account, as did Pickersgill, 2007, Frog Search: 277-284, both as Cacosternum nanum nanum. Bates and Haacke, 2003, Navors. Nas. Mus. Bloemfontein, 19: 138-140, discussed the species (as Cacosternum nanum nanum) in Lesotho. See comments and revision by Channing, Schmitz, Burger, and Kielgast, 2013, Zootaxa, 3701: 518–550. See accounts (as Cacosternum poyntoni) by Minter, 2004, in Minter et al. (eds.), Atlas Frogs S. Afr. Lesotho and Swaziland: 235-236, and Du Preez and Carruthers, 2009, Compl. Guide Frogs S. Afr.: 378-379 (who suggested that the single specimen might be an atypical Cacosternum nanum). Channing, Rödel, and Channing, 2012, Tadpoles of Africa: 336–337, provided information on comparative larval morphology. Conradie, 2014, Zootaxa, 3785: 438–452, reported on the molecular phylogenetics of the genus and documented that Cacosternum nanum and Cacosternum parvum are not each others' closest relatives.

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