In a reorganisation of the genera, the Japanese and the Ryukyu robins were moved to the resurrected genus "Larvivora" leaving the European robin as the sole member of "Erithacus". The phylogenetic analysis placed "Erithacus" in the subfamily Erithacinae, which otherwise contained only African species, but its exact position with respect to the other genera was not resolved. The genus "Erithacus" was formerly classified as a member of the thrush family (Turdidae) but is now considered to belong to the Old World flycatcher family (Muscicapidae), specifically to the chats (subfamily Saxicolinae) which also include the common nightingale. In its large continental Eurasian range, robins vary somewhat, but do not form discrete populations that might be considered subspecies. Robin subspecies are mainly distinguished by forming resident populations on islands and in mountainous areas. The robin found in the British Isles and much of western Europe, "Erithacus rubecula melophilus", occurs as a vagrant in adjacent regions. witherbyi" from northwest Africa, Corsica, and Sardinia closely resembles "melophilus" but has shorter wings. The northeasternmost birds, large and fairly washed-out in colour, are "E. r. tataricus". In the southeast of its range, "E. r. valens" of the Crimean Peninsula, "E. r. caucasicus" of the Caucasus and northern Transcaucasia, and "E. r. hyrcanus" southeastwards into Iran are generally accepted as significantly distinct. On Madeira and the Azores, the local population has been described as "E. r. microrhynchos", and although not distinct in morphology, its isolation seems to suggest the subspecies is valid (but see below). The most distinct birds are those of Gran Canaria ("E. r. marionae") and Tenerife ("E. r. superbus"), which may be considered two distinct species or at least two different subspecies. It is readily distinguished by a white eye-ring, an intensely coloured breast, and a grey line that separates the orange-red from the brown colouration. Its belly is entirely white. Cytochrome "b" sequence data and vocalisations indicate that the Gran Canaria/Tenerife robins are indeed very distinct and probably derived from colonisation by mainland birds some 2 million years ago.