21. Costosa rhodantha (Meyrick, 1907)

Eucosma rhodantha Meyrick, 1907, J. Bombay Nat. Hist. Soc. 18: 138. Type locality: India, “ Assam, Khasi Hills ”. Holotype (♂): NHM.

Olethreutes rhodantha (Meyrick, 1907): Clarke, 1958, British Museum (Natural History) 3: 523, pl. 270, Figs. 3–3a (wing, ♂ genitalia).

Costosa rhodantha (Meyrick, 1907): Diakonoff, 1973, Zool. Monogr. Rijksmus. Nat. Hist. 1: 306, Figs. 466–469 (head, wing venation, ♂, ♀ genitalia).

Distribution outside Thailand: India (Meyrick 1907), Sri Lanka (Diakonoff 1973), China (Kawabe et al. 1992), Nepal (Robinson et al. 1994), and Vietnam (Nedoshivina 2013).

Distribution in Thailand: Thailand (Robinson et al. 1994).

Host plants: Unknown.

Remarks: Robinson et al. (1994) reported this species from Thailand but did not mention about province, location, and elevation.