02368nas a2200301   4500008004100000245009800041210006900139300001200208490000600220520138300226653002301609653001201632653005401644653001201698653004701710653004601757653001001803653003201813653001301845653001101858653001101869653001101880653004301891653004601934100001601980700002101996856004902017       2005                        eng d00aDescription of two new species of Iotonchium Cobb, 1920 (Tylenchida: Iotonchiidae) from Japan0 aDescription of two new species of Iotonchium Cobb 1920 Tylenchid  a789-8010 v73 aTwo new Iotonchium species are described from Japan. These species possesses four adult forms; mycetophagous female, infective female, male and insect-parasitic female. lotonchium laccariae n. sp. is characterised by short body length of all adult forms., right-angled L-shaped spicule with beak-like distal arm, a pair of large papillae interior to the cloacal opening, the dorso-ventrally flattened head of male and the reproductive features of the parasitic female. The mycetophagous females of I. laccariae n. sp. inhabit the fruiting bodies of four Laccaria spp. Males and infective females were also obtained from the fruiting bodies. The insect-parasitic females of I. laccariae n. sp. inhabit the haemocoel of a fungus gnat, Allodia laccariae. Iotonchium russulae n. sp. is characterised by the long body length of the infective female, parasitic female and mycetophagous female, obtuse-angled L-shaped spicule with dorsally curved slender distal arm, a pair of bifid postcloacal papillae, presence of a mid-ventral postcloacal papilla in the male and reproductive features of the parasitic female. The mycetophagous females, males and infective females of L russulae n. sp. were obtained from the fruiting bodies of three Russula spp. and two Lactarius spp. The insect-parasitic females of L russulae n. sp. inhabit the haemocoel of A. bipexa, a species of fungus gnat.10aConsidered invalid10aDiptera10aFungiotonchium Siddiqi 1986 ( Nematoda ) : Status10aInsecta10aIotonchium laccariae ( Nematoda ) : Sp nov10aIotonchium russulae ( Nematoda ) : Sp nov10aJapan10aMycetophilidae : Nematocera10aNematoda10ap. 79010ap. 79610ap. 80110aParasite of Allodia bipexa ( Diptera )10aParasite of Allodia laccariae ( Diptera )1 aTsuda, Kaku1 aFutai, Kazuyoshi  uhttps://sciaroidea.myspecies.info/node/23855