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4 results for “Uktena”
FIGURE 4. Uktena riparia n in Uktena riparia n. gen., n. sp. (Annelida, Clitellata, Lumbriculidae), a new spermatophore-producing oligochaete
FIGURE 4. Uktena riparia n. sp. from Flat Creek (the type locality), from sagittal sections (A–E and J–L), or dissections (F– I). A. Ectal part of spermathecal ampulla, with sperm lined up along epithelium. B. Ental part of spermathecal ampulla with weakly-stained (old?) sperm. C. Copulatory organ and gland in spermathecal bursa. D. Muscle layer of spermathecal bursa wall. E. Small glands and muscle layer forming the wall of male bursa. F. Gland opening on papilla within male bursa. G. Spermatophore forming in atrial duct, with darkly-staining sperm (composite photo). H. Atrial ampulla and duct with coiled sperm bundles inside. I. Spermatophore protruding from male pore. J–L. Atrial ampullae; (K) showing detail of atrial wall, with prostate glands penetrating muscle layer (arrows); (L) showing elongate prostate glands with secretions.
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.
FIGURE 1. Uktena riparia n in Uktena riparia n. gen., n. sp. (Annelida, Clitellata, Lumbriculidae), a new spermatophore-producing oligochaete
FIGURE 1. Uktena riparia n. sp. A,C,G from Flat Creek (the type locality); B,D,E,F from Lower Little River. A and B. Ventral views of mature worms; spermatophores protruding from spermathecal pores in (A); spermathecal copulatory organs everted in (B). C. Ventral chaetae: single chaetae in segment II, IX and X, pairs in VIII and XI; those in IX and X are genital chaetae. D. Ventral chaetal bundles: paired somatic chaetae in II, VIII, XI and LX; developing genital chaetae in IX. E. Gland within an everted spermathecal copulatory organ. F. Paired glands within male bursa. G. Dorsal view of lateral blood vessels in a posterior segment; worm is facing left.
FIGURE 2. Uktena riparia n in Uktena riparia n. gen., n. sp. (Annelida, Clitellata, Lumbriculidae), a new spermatophore-producing oligochaete
FIGURE 2. Uktena riparia n. sp. Reproductive organs, A–C, E from Flat Creek (the type locality), D from tributary to Naked Creek. A–C. Mature, mated specimens; spermathecal copulatory organ is everted in (C); spermatophores in spermathecal bursae in (A, C); detail of spermathecal copulatory organ and glands in male bursa in (B). D–E. Immature worms with partially developed reproductive organs, spermathecal bursa and copulatory organ not developed; genital chaetae partially developed.
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