FIGURE 5. Tubifex tubifex. A–D in A Nearctic tubificid Varichaetadrilus harmani (Loden) n. comb. in a Dutch wetland, with remarks on Tubifex tubifex (Müller) (Annelida: Oligochaeta)

FIGURE 5. Tubifex tubifex. A–D, ventral chaetae: A, from II, B, from IV, C, from midbody, D, from tail region. E–G, dorsal chaetae: E, from III, F, from V, G, from midbody. H, spermatheca (partially extracted from body). I–K, cross sections of male duct. I, proximal portion of vas deferens, J, distal portion of vas deferens, K, distal portion of atrium. L, penial apparatus and a stretch of proximal portion of vas deferens in a whole mount. Scale bars: A–G 20 µm, H 200 µm, I–L 50 µm.