Erythrura trichroa Finsch (part), Journ. f. Ornith., 1880, p. 290 (Ponapé, Hügeln = Truk); idem, Proc. Zool. Soc. London, 1880, p. 576 (Ruk); idem (part), Ibis, 1881, pp. 104, 110, 112, 115 (Ponapé); Schmeltz and Krause (part), Ethnogr. Abth. Mus. Godeffroy, 1881, p. 353 (Ruk); Salvadori (part), Ornith. Papuasia, 2, 1881, p. 442 (Ponapé); Sclater (part), Ibis, 1881, p. 545 (Ponapé, Ruk); Sharpe (part), Cat. Birds British Mus., 13, 1890, p. 385 (Carolines = Truk, Ponapé); Wiglesworth (part), Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 42 (Ponapé, Ruk); Nehrkorn, Kat. Eiers, 1899, p. 122 (Ruk); Matschie (part), Journ. f. Ornith., 1901, p. 112 (Ruk, Ponapé); Dubois (part), Syn. Avium, 1, 1902, p. 583 (Carolines = Ponapé); Takatsukasa and Kuroda (part), Tori, 1, 1915, pp. 55, 64 (Ponapé); Mayr, Proc. 6th Pacific Sci. Congr., 4, 1941, p. 204 (Ponapé).
Erythrura trichroa trichroa Hartert (part), Novit. Zool., 7, 1900, p. 6 (Ruk, Ponapé); Kuroda (part), in Momiyama, Birds Micronesia, 1922, pp. 27, 28, 29, 78 (Ponapé, Ruk); Mayr (part), Amer. Mus., Novit., no. 489, 1931, p. 4 (Ponapé, Ruk).
Chloromunia trichroa Mathews, Birds Australia, 12, 1925, p. 208 (Ruk).
Chloromunia trichroa trichroa Mathews (part), Syst. Avium Australasianarum, 2, 1930, p. 840 (Carolines = Truk, Ponapé).
Erythrura trichroa clara Hand-list Japanese Birds, rev., 1932, p. 170 (Truk, Ponapé); Hand-list Japanese Birds, 3d ed., 1942, p. 189 (Truk, Ponapé); Mayr, Birds Southwest Pacific, 1945, p. 302 (Truk, Ponapé); Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, p. 74 (Truk).
Lobospingus trichroa clara Mathews, Ibis, 1933, p. 96 (Ruk, Ponapé).
Geographic range.—Micronesia: Caroline Islands—Truk, Ponapé, Lukunor?
Characters.—Adult: Resembles adult of E. t. trichroa, but slightly larger with underparts more yellowish and less greenish; blue on head slightly paler; sides of neck tinged more strongly with yellowish. Birds from Ponapé are slightly paler than those from Truk.
Measurements.—Measurements are listed in [table 53]. Birds from Ponapé and Truk differ but little in measurements.