A NEW GENUS AND 2 NEW SPECIES OF TUBIFICIDAE (OLIGOCHAETA) FROM THE ABYSSAL ZONE OF LAKE-BAIKAL WITH REDESCRIPTIONS OF LYMPHACHAETA-PINNIGERA, RHYACODRILOIDES ABYSSALIS AND TUBIFEX BAZIKALOVAE

Citation
P. Martin et Ro. Brinkhurst, A NEW GENUS AND 2 NEW SPECIES OF TUBIFICIDAE (OLIGOCHAETA) FROM THE ABYSSAL ZONE OF LAKE-BAIKAL WITH REDESCRIPTIONS OF LYMPHACHAETA-PINNIGERA, RHYACODRILOIDES ABYSSALIS AND TUBIFEX BAZIKALOVAE, Zoologica scripta, 27(3), 1998, pp. 197-207
Citations number
27
Categorie Soggetti
Zoology
Journal title
ISSN journal
03003256
Volume
27
Issue
3
Year of publication
1998
Pages
197 - 207
Database
ISI
SICI code
0300-3256(1998)27:3<197:ANGA2N>2.0.ZU;2-C
Abstract
Recent sampling of the abyssal zone of Lake Baikal (Siberia) made poss ible redescriptions of the poorly known species Lymphachaeta pinnigera Snimschikova, Rhyacodriloides abyssalis Chekanovskaya, Tubifex bazika lovae Chekanovskaya, and descriptions of Burchanidrilus petitbonum gen . n., sp. n. and Rhyacodriloides gladiiseta sp. n. Lymphachaeta and Bu rchanidrilus belong to a complex of small Tubificinae, characterised b y true penes in penis sacs, rather simple atria, and lack of coelomocy tes and spermatozeugmata. These mag be considered plesiomorphic charac ter states for Tubificinae. Rhyacodriloides is still assigned to the R hyacodrilinae, despite simple-pointed setae, the lack of coelomocytes, the presence of single genital seta and possible 'multiple' prostates . (C) 1998 The Norwegian Academy of Science and Letters.