FIGURE 3. Uktena riparia n in Uktena riparia n. gen., n. sp. (Annelida, Clitellata, Lumbriculidae), a new spermatophore-producing oligochaete

FIGURE 3. Uktena riparia n. sp. from Flat Creek (the type locality). A. Sagittal section of anterior end. B. Dissected anterior end, showing pharynx. C. 3-lobed pharyngeal glands, from a dissection. D. Body wall in an anterior segment; sagittal section showing circular muscle layer. E. Anterior end of a nephridium; funnel on left; narrow postseptal mass to the right of the septum. F. Genital chaetae on IX and X, with female funnel in between, from a dissection. G. Genital chaetae in IX; tips visible as 2 rows at surface (above); appearing fan-wise in a cleared specimen (below). H. Genital field of a stained, whole worm, with partially-everted spermathecal bursae and copulatory organs. I. Two darkly-stained spermatophores attached at the base of a protruded copulatory organ. J. Helical sperm bundles within a spermatophore. K. Dorsal view of lateral blood vessels in a posterior segment. L. Copulatory organ within the spermathecal bursa. M. Secretory surface of copulatory organ.