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

Didynamipus sjostedti Andersson, 1903

Class: Amphibia > Order: Anura > Family: Bufonidae > Genus: Didynamipus > Species: Didynamipus sjostedti

Didynamipus sjöstedti Andersson, 1903, Verh. Zool. Bot. Ges. Wien, 53: 143. Syntypes: NHMG Ba. ex. 221 (2 specimens), according to museum records. Type locality: "Kamerun". Incorrect original spelling of the species name.

Didynamipus sjostedti — Boulenger, 1904, Zool. Rec., 40: 35. Justified emendation of the species name.

Atelophryne minutus Boulenger, 1906 "1905", Ann. Mus. Civ. Stor. Nat. Genova, Ser. 3, 2: 159. Syntypes: 6 specimens (MSNG and BMNH), by original designation; including BM1947.2.20.38–39 (formerly 1906.3.30.162–63) by museum records. Type locality: "Basilè, Fernando Po, 400 to 600 metres altitude". Synonymy by Mertens, 1965, Bonn. Zool. Beitr., 16: 19 (not Noble, 1924, Bull. Am. Mus. Nat. Hist., 49: 147–347, as reported by Grandison, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 188).

Didynamipus sjoestedti — Mertens, 1965, Bonn. Zool. Beitr., 16: 19. Amiet, 1976, Rev. Zool. Bot. Afr., 90: 40; Grandison, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 187. Incorrect subsequent spelling.

Didynamipus sjostedti — Grandison, 1985, in Frost (ed.), Amph. Species World: 67. Justified emendation.

Common Names

Four-digit Toad (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 44).

Dwarf Toad (Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 94).

Distribution

Bioko (Equatorial Guinea) and southwestern Cameroon into southeastern-most Nigeria.

Geographic Occurrence

Natural Resident: Cameroon, Equatorial Guinea, Nigeria

Comment

Art. 32.5.2 (ICZN, 1999, Internatl. Code Zool. Nomencl., Ed. 4) restricts the exchange of ö for oe to German words; Sjöstedt is Swedish. 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: 194. See Cole, Townsend, Reynolds, MacCulloch, and Lathrop, 2013, Proc. Biol. Soc. Washington, 125: 375–376, for brief account and records for Guyana. Gonwouo, Ndeh, Tapondjou, and Noonan, 2013, Check List, 9: 780–782, provided new records and mapped the geographic distribution. Channing and Rödel, 2019, Field Guide Frogs & Other Amph. Afr.: 94–95, provided a brief account, photograph, and range map. See brief account, range map for Bioko, Equatorial Guinea, in Sánchez-Vialas, Calvo-Revuelta, Castroviejo-Fisher, and De la Riva, 2020, Proc. California Acad. Sci., Ser. 4, 66: 137–230. Gonwouo, Tchassem, Doherty-Bone, and Rödel, 2021, Herpetol. Notes, 14: 1051–1065, extended the range 150 km to the south in Cameroon at 40 km north of Akom II, along the road to Bipindi in the Ocean Division, South Region.

External links:

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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 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 access to available specimen data for this species, from over 350 scientific collections, go to Vertnet.