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

Incilius mazatlanensis (Taylor, 1940)

Class: Amphibia > Order: Anura > Family: Bufonidae > Genus: Incilius > Species: Incilius mazatlanensis

Bufo mazatlanensis Taylor, 1940 "1939", Univ. Kansas Sci. Bull., 26: 492. Holotype: EHT-HMS 374, by original designation; now FMNH 100027 according to Marx, 1976, Fieldiana, Zool., 69: 45. Type locality: "two miles east of Mazatlán, Sinaloa, Mexico".

Bufo nayaritensis Taylor, 1943, Univ. Kansas Sci. Bull., 29: 349. Holotype: EHT-HMS 397, by original designation; now FMNH 100043, according to Marx, 1976, Fieldiana, Zool., 69: 45. Type locality: "Tepic, Nayarit", Mexico. Synonymy by Langebartel and Smith, 1954, Herpetologica, 10: 126.

Bufo mazatlanensis mazatlanensis — Langebartel and Smith, 1954, Herpetologica, 10: 126.

Bufo mazatlanensis nayaritensis — Langebartel and Smith, 1954, Herpetologica, 10: 126.

Cranopsis mazatlanensis — 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: 364.

Ollotis mazatlanensis — Frost, Grant, and Mendelson, 2006, Copeia, 2006: 558, by implication.

Incilius mazatlanensis — Frost, Mendelson, and Pramuk, 2009, Copeia, 2009: 418–419, by implication.

Common Names

Sinaloa Toad (Liner, 1994, Herpetol. Circ., 23: 17; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 42; Liner and Casas-Andreu, 2008, Herpetol. Circ., 38: 18).

Distribution

Northern Sonora from the municipality of Imuris and southwestern Chihuahua (Río Fuerte drainage) to Colima, along the Pacific coastal plain, Mexico; reported in the Pacific drainage of Durango and Jalisco, Mexico; Isla Maria Madre, Nayarit, Mexico.

Geographic Occurrence

Natural Resident: Mexico

Endemic: Mexico

Comment

In the former Bufo valliceps group of Martin, 1972, in Blair (ed.), Evol. Genus Bufo: 49. See accounts by Porter, 1964 "1963", Herpetologica, 19: 229–247, and McDiarmid and Hardy, 1969, Univ. Kansas Publ. Mus. Nat. Hist., 18: 82–84. See comment under Incilius gemmifer. Mendelson, Mulcahy, Williams, and Sites, 2011, Zootaxa, 3138: 1–34, suggested that this species is a member of a monophyletic Incilius valliceps group and in a subgroup they referred to as the Lowland group (the name Incilius valliceps subgroup is available—DRF) that includes Incilius gemmifer, Incilius luetkeni, Incilius mazatlanensis, Incilius nebulifer, and Incilius valliceps. Lemos-Espinal, 2007, Anf. Rept. Chihuahua Mexico: 38, provided an account (as Bufo mazatlanensis) for Chihuahua, Mexico. Oliver-López, Woolrich-Piña, and Lemos-Espinal, 2009, Fam. Bufonidae Mex.: 80–82, provided an account for the state of Mexico (as Ollotis mazatlanensis), although the range map for the northern portion of the range is misleading. Valdes-Lares, Martín-Muñoz de Cote, and Muñiz-Martínez, 2013, Herpetol. Rev., 44: 646, provided new records for Durango, Mexico. Rorabaugh and Lemos-Espinal, 2016, Field Guide Amph. Rept. Sonora: 138–141, provided a detailed account of natural history, morphology, and conservation status in Sonora, Mexico. Lemos-Espinal, Smith, and Valdes-Lares, 2019, Amph. Rept. Durango: 53–54, provided a brief account for Durango, Mexico. Rorabaugh and Verdugo Figueroa, 2019, Herpetol. Rev., 50: 322, provided a record from the municipality of Imuris, northern Sonora, Mexico, and briefly discussed the range. Ahumada-Carrillo, Grünwald, López Cuellar, and Jones, 2020, Herpetol. Rev., 51: 277–278, reported the species from the municipality of Mezquitic, northern Jalisco, Mexico. Found on Isla Maria Madre in the Tres Marias Archipelago of Nayarit, Mexico, according to Nolasco Luna, Barraza-Soltero, López-Montes, Moreno-López, and Escobedo Galván, 2022, Check List, 18: 244. Loc-Barragán, Smith, Woolrich-Piña, and Lemos-Espinal, 2024, Herpetozoa, Wien, 37: 30, reported on the distributional and conservation status in the state of Nayarit, Mexico.

External links:

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For access to general information see Wikipedia
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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.