FIGURE 6. Tubifex tubifex, cross sections from genital region. A in A Nearctic tubificid Varichaetadrilus harmani (Loden) n. comb. in a Dutch wetland, with remarks on Tubifex tubifex (Müller) (Annelida: Oligochaeta)

FIGURE 6. Tubifex tubifex, cross sections from genital region. A, anterior portion of XI. B, median portion of XI, with penial sacs. C, posterior portion of XI, with atrial ampullae and prostates. Scale bar 50 µm. ; Published as part of Timm, Tarmo, 2006, A Nearctic tubificid Varichaetadrilus harmani (Loden) n. comb. in a Dutch wetland, with remarks on Tubifex tubifex (Müller) (Annelida: Oligochaeta), pp. 21-39 in Zootaxa 1281 on page 35, DOI:10.5281/zenodo.173402