Ryukyu Robin is split into two species, based primarily on deep genetic divergence (as assessed by mitochondrial DNA: Saitoh et al. 2015), coupled with preliminary evidence of vocal differences (Boesman 2016t): Ryukyu Robin Larvivora komadori and Okinawa Robin Larvivora namiyei.
Subspecies subrufus, with range “S Ryukyu Islands (Ishigaki, Iriomote and Yonaguni)”, is considered to be a junior synonym of nominate komadori (Vaurie 1955, Kawaji and Higuchi 1989), and is deleted; revise the range from “Ryukyu Is. (Tanega-Shima, Amami-O-Shima, Tokuno-Shima)” to “breeds Danjo Islands (off of southwestern Kyushu) and the northern Ryukyu Islands (Tanegashima S to Tokunoshima); winters south to the southern Ryukyu Islands (mainly Miyako, Ishigaki, Iriomote and Yonakuni)”.
References:
Boesman, P. 2016t. Notes on the vocalizations of Ryukyu Robin (Luscinia komadori). HBW Alive Ornithological Note 325 in Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. https://doi.org/10.2173/bow-on.100325
Unintended disagreements occur when a parent (B) is
thinned by swapping a child (E) to another part of the
taxonomic tree, resulting in existing IDs of the parent being interpreted
as disagreements with existing IDs of the swapped child.
Identification
ID 2 of taxon E will be an unintended disagreement with ID 1 of taxon B after the taxon swap
If thinning a parent results in more than 10 unintended disagreements, you
should split the parent after swapping the child to replace existing IDs
of the parent (B) with IDs that don't disagree.