Lyssna
NRM 568763
Alseonax siamensis
Gyldenstolpe, 1916
Alseonax siamensis Gyldenstolpe, Orn. Monatsber., vol. 24, No. 2, February 1916.
= Muscicapa dauurica siamensis Gyldenstolpe, 1916
Holotype ? : Male ad., Bang Hue Pong, Northern Siam. 27. V. 1914. N. Gyldenstolpe leg. No. 421. - Measurements of type : wing : 68 mm.; tail : 51 mm.; culmen : 11,5 mm.; tarsus : 12 mm.
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Foto © NRM Anna Constantinides