Y. blakeleyensis, Y. bocasensis, Y. clydoniona, Y. cupressensis, Y. diminutiva, Y. dowlingi, Y. duprei, Y. freytagi, Y. gala, Y. gladenkovi, Y. hikoshimensis, Y. impressa, Y. inaequisculpta, Y. kermadecensis, Y. kissoumi, Y. lacrima, Y. laevis, Y. limatula, Y. mater, Y. mcconnelli, Y. nasuta, Y. newcombi, Y. nitida, Y. olympiana, Y. peninsularis, Y. pisciformis, Y. rectangularis, Y. sagittalia, Y. sammamishensis, Y. sapotilla, Y. scaphoides, Y. serica, Y. subscitula, Y. supramontereyana

Y. alta, Y. amygdalaeformis, Y. angusta, Y. breweri, Y. calumetensis, Y. clallamensis, Y. cuneata, Y. eborea, Y. emersoni, Y. frater, Y. germena, Y. glacialis, Y. hakobutsensis, Y. hokkaidoensis, Y. kamtschatica, Y. khandasensis, Y. kindlei, Y. knoxensis, Y. kochtanensis, Y. lanceolata, Y. leurovata, Y. levitestata, Y. limulata, Y. longa, Y. longifrons, Y. longissima, Y. lusoana, Y. mediana, Y. microdonta, Y. mira, Y. moessi, Y. multiconcentrica, Y. nabiliana, Y. oblongoides, Y. obsoleta, Y. oregonensis, Y. ovata, Y. palachei, Y. pennulata, Y. philippiana, Y. praeposneri, Y. raulini, Y. sagittaria, Y. sammammishensis, Y. semistriata, Y. septariana, Y. serotina, Y. slodkewitschi, Y. sobrina, Y. soror, Y. striatula, Y. subacuta, Y. subpilvoensis, Y. tarphaeia, Y. tatianensis, Y. uvutschensis, Y. valida, Y. ventricosa, Y. waltonensis, Y. kurzi, Y. hammetti, Y. houstonia, Y. pistorupes, Y. potomacensis, Y. praecompsa, Y. semenoides, Y. anastasia, Y. longa, Y. nabiliana, Y. sakhalinensis, Y. asagaiensis, Y. franciscoi, Y. kindlei, Y. ovalis, Y. rubamnis, Y. siliqua, Y. antiquus, Y. caudata, Y. chejsliensis, Y. djakovi, Y. enemtensis, Y. epilongissima, Y. gackhensis, Y. gretschishkini, Y. heeringi, Y. kikuchii, Y. kovatschensis, Y. limimtensis, Y. longissima, Y. navicula, Y. posneri, Y. praeposneri, Y. salvationemensis, Y. semistriata, Y. strucki, Y. subamygdalea, Y. tschekhovi