Nyctixalus margaritifer Boulenger, 1882

Class: Amphibia > Order: Anura > Family: Rhacophoridae > Subfamily: Rhacophorinae > Genus: Nyctixalus > Species: Nyctixalus margaritifer

Nyctixalus margaritifer Boulenger, 1882, Ann. Mag. Nat. Hist., Ser. 5, 10: 35. Holotype: "Royal Museum, Brussels", now lost according to Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 257, who designated as neotype BMNH 1885.12.31.35. Type locality: "purchased as being from the East Indies"; neotype from "Willis Mountains (Java)", Indonesia. Synonymy by Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 257.

Ixalus flavosignatus Boettger, 1893, Zool. Anz., 16: 339. Holotype: SMF 7036 according to Mertens, 1967, Senckenb. Biol., 48(A): 47. Type locality: "Tjisurupan, West-Java", Indonesa. Synonymy (with Nyctixalus margaritifer) by Smith, 1931, Bull. Raffles Mus., 5: 17, and (with Ixalus pictus) by Inger, 1966, Fieldiana, Zool., 52: 349-350. Recognized (as Nyctixalus flavosignatus) without comment by  Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 257

Philautus flavosignatusSmith, 1931, Zool. Rec., 67: 30. Mertens, 1967, Senckenb. Biol., 48(A): 47.

Philautus pictus margaritiferInger, 1966, Fieldiana, Zool., 52: 350.

Nyctixalus pictus margaritifer —  Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 257; Bossuyt and Dubois, 2001, Zeylanica, 6: 31.

Nyctixalus flavosignatus —  Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 257; Delorme, Dubois, Grosjean, and Ohler, 2005, Bull. Mens. Soc. Linn. Lyon, 74: 166. Recognized without discussion.

English Names

Java Indonesian Treefrog (Nycixalus flavosignatus [no longer recognized]: Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 111).

Pearly Tree Frog (Iskandar, 1998, Amph. Java Bali: 84).


Disjunct populations on Java, Indonesia, in undisturbed highland forest from 700 to 1200 m elevation.

Geographic Occurrence

Natural Resident: Indonesia

Endemic: Indonesia


Nyctixalus margaritifer considered possibly a synonym of Philautus aurifasciatus by Liem, 1973 "1971", Philipp. J. Sci., 100: 157. See discussion by Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 255-257, about confusion surrounding the application of the name Nyctixalus margaritifer. Iskandar, 1998, Amph. Java Bali: 84-85, provided a brief account and restriction of the name to the Javan population. See comments under Nyctixalus flavosignatus and Nyctixalus pictus. Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 257, removed Ixalus flavosignatus from synonymy under Nyctixalus margaritifer; without discussion, implying that two species in this genus occur in Java. Iskandar, 1998, Amph. Java Bali: 84-85, did not recognize Nyctixalus flavosignatus as distinct from Nyctixalus margaritifer but did not address the issue. See identification table by Manthey and Grossmann, 1997, Amph. Rept. Südostasiens: 122-123, to compare this species to other rhacophorids of the Sunda Shelf region. 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: 516. See brief account for East Java by Amin, 2020, Frogs of East Java: 63–65. Hanifa, Septiadi, Hasyim, Fathoni, Prabasari, Erfanda, Rahmadana, Widjanarko, and Kurniawan, 2023, Check List, 19: 971–982, provided new records from central and eastern Java and also discussed morphological variation. Ibnudarda, Farajallah, Perwitasari, Hamidy, Prihatini, and Darmawan, 2024, Zootaxa, 5410: 297–300, reported on the advertisement call and reciprocal calling of the sexes. 

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