The millipede family Diplomaragnidae Attems, 1907 in the Asian part of Russia with the descriptions of two new genera and seven new species (Diplopoda, Chordeumatida) Author Mikhaljova, Elena V. text Zootaxa 2021 2021-10-28 5060 1 1 44 journal article 3791 10.11646/zootaxa.5060.1.1 40f89bbe-7f7b-4abd-aa02-a45e410da232 1175-5326 5606671 14126B35-AEEA-40F5-A892-FE6A8D64E5D6 Ancestreuma ryvkini ( Shear, 1990 ) Diplomaragna ryvkini Shear 1990: 15 , figs. Diplomaragna ryvkini — Mikhaljova 1993: 25 . Diplomaragna longibrachiata — Mikhaljova 1993: 25 . Ancestreuma ryvkini — Mikhaljova 2000: 156 ; 2002b: 204 ; 2004: 104, figs, map; 2016: 12; 2017: 130, figs, map; Mikhaljova & Golovatch 2001: 109 ; Vorobiova et al. 2002: 62 . Material examined. 1 male , 2 juv. ( FSCB ), Russia , Siberia , Valley Tunkinskaya ( Republic of Buryatia + Irkutskaya Oblast ), 2500 m , along the road under cardboard, 21.VIII.2019 , leg. L.A. Prozorova. Distribution. Russia : Siberia (Republic of Buryatia , Irkutskaya Oblast, Republic of Tyva , Republic of Sakha [Yakutia], central and southern parts of Krasnoyarsky Krai); North Mongolia. Remarks. This species was originally described in Diplomaragna ( Shear 1990 ) , but later transferred to the genus Ancestreuma ( Mikhaljova 2000 ) .