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

Osteocephalus deridens Jungfer, Ron, Seipp, and Almendáriz, 2000

Class: Amphibia > Order: Anura > Family: Hylidae > Genus: Osteocephalus > Species: Osteocephalus deridens

Osteocephalus deridens Jungfer, Ron, Seipp, and Almendáriz C., 2000, Amphibia-Reptilia, 21: 328. Holotype: EPN-H 6655, by original designation. Type locality: "Estación Biologica Jatun Sacha, (01° 04′ S; 77° 36′ W), a reserve about 8 km E Puerto Misahuallí, Provincia Napo, Ecuador, 450 m a.s.l."

Common Names

Laughing Treefrog (Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxiv).

Rana Arbórea Risueña (Spanish: Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxiv).

Distribution

Intermediate elevations (190–1023 m) of the Río Napo drainage in the provinces of Napo, Orellana, Pastaza, Morona Santiago, Zamora Chinchipe, and Sucumbíos, Ecuador; northern Amazonian Peru; Amazonian Colombia (Cauquetá, Amazonas, and Guaviare), and Estação Ecológica Juami-Japurá, municipality of Japurá, Amazonas, Brazil. See comment.

Geographic Occurrence

Natural Resident: Brazil, Colombia, Ecuador, Peru

Comment

In the Osteocephalus planiceps species group of Jungfer, Faivovich, Padial, Castroviejo-Fisher, Lyra, Berneck, Iglesias, Kok, MacCulloch, Rodrigues, Verdade, Torres-Gastello, Chaparro, Valdujo, Reichle, Moravec, Gvoždík, Gagliardi-Urrutia, Ernst, De la Riva, Means, Lima, Señaris Vasquez, Wheeler, and Haddad, 2013, Zool. Scripta, 42: 351-380. Moravec, Aparicio, Guerrero-Reinhard, Calderón, Jungfer, and Gvoždík, 2009, Zootaxa, 2215: 54, provided a record for Amazonian Peru. Forti, Foratto, Márquez, Pereira, and Toledo, 2018, PeerJ, 6(e4813): 1–19, characterized the advertisement call. Simões, Rojas-Runjaic, Gagliardi-Urrutia, and Castroviejo-Fisher, 2019, Herpetol. Notes, 12: 211–219, provided a record for Brazil (Estação Ecológica Juami-Japurá, municipality of Japurá, Amazonas, Brazil) and described the advertisement call. See range map in Ferrão, Moravec, Moraes, Carvalho, and Gordo, 2019, PeerJ, 7(e8160): 4. Metcalf, Marsh, Torres Pacaya, Graham, and Gunnels, 2020, Herpetol. Notes, 13: 753–767, reported the species from the Santa Cruz Forest Reserve, Loreto, northeastern Peru. Gagliardi-Urrutia, García Dávila, Jaramillo-Martinez, Rojas-Padilla, Rios-Alva, Aguilar-Manihuari, Pérez-Peña, Castroviejo-Fisher, Simões, Estivals, Guillen Huaman, Castro Ruiz, Angulo Chávez, Mariac, Duponchelle, and Renno, 2022, Anf. Loreto: 112–113, provided a brief account, photograph, dot map, and genetic barcode for Loreto, Peru. Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: 463–465, provided an account, with photographs, which summarized identification, adult and larval morphology, systematics, natural history, distribution (including a dot map for Ecuador), conservation, and (on p. 591) the advertisement call. These authors also implied that the Brazilian population requires confirmation of identification because of substantial morphological differences from the Ecuadorian populations.

External links:

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For access to general information see Wikipedia
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For access to relevant technical literature search Google Scholar
For images search CalPhoto Images and Google Images
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 related information on conservation and images as well as observations see iNaturalist
For additional information specific to Ecuador see FaunaWebEcuador: Anfibios del Ecuador