Related taxa: * Perisoreus infaustus ----- Perisoreus infaustus [infaustus or ruthenus] ---------- Perisoreus infaustus infaustus --------------- Perisoreus infaustus infaustus (infaustus) --------------- [ Perisoreus infaustus infaustus (manteufeli) ] ---------- Perisoreus infaustus ruthenus ----- Perisoreus infaustus opicus ----- Perisoreus infaustus [sibericus, caudatus, yakutensis or tkatchenkoi] ---------- Perisoreus infaustus [sibericus or caudatus] --------------- Perisoreus infaustus sibericus -------------------- Perisoreus infaustus sibericus (sibericus) -------------------- [ Perisoreus infaustus sibericus (sushkini) ] --------------- Perisoreus infaustus caudatus ---------- Perisoreus infaustus yakutensis --------------- Perisoreus infaustus yakutensis (yakutensis) --------------- [ Perisoreus infaustus yakutensis (bungei) ] --------------- [ Perisoreus infaustus yakutensis (sokolnikowi) ] ---------- Perisoreus infaustus tkatchenkoi --------------- Perisoreus infaustus tkatchenkoi (tkatchenkoi) --------------- [ Perisoreus infaustus tkatchenkoi (varnak) ] ----- Perisoreus infaustus rogosowi ---------- Perisoreus infaustus rogosowi (rogosowi) ---------- Perisoreus infaustus rogosowi (ostjakoram) ---------- [ Perisoreus infaustus rogosowi (monjerensis) ] ----- Perisoreus infaustus maritimus ---------- Perisoreus infaustus maritimus (maritimus) ---------- [ Perisoreus infaustus maritimus (sakhalinensis) ]

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