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30 results for “Rhynchelmis”
FIGURE 7. R. diespluviae n in Rhynchelmis subgenus Sutroa Eisen new rank, with two new species from western North America (Annelida, Clitellata, Lumbriculidae)
FIGURE 7. R. diespluviae n. sp. from Rainy Day Creek, Idaho, reproductive structures. A. Atrium and vasa deferentia, sagittal view from a dissected worm (X–XVII, facing left). B. Spermathecae in VIII, reconstructed from transverse sections (arrows indicate positions of chaetae). C. Penial structures in X, reconstructed from transverse sections. Scale bar (B–C) 400 Μm.
FIGURE 9. R. diespluviae n in Rhynchelmis subgenus Sutroa Eisen new rank, with two new species from western North America (Annelida, Clitellata, Lumbriculidae)
FIGURE 9. R. diespluviae n. sp. from Rainy Day Creek, reproductive structures; sagittal sections (A–B), transverse sections (C–I). A. Spermatheca. B. Detail of spermathecal bulb with very short duct at top. C. Spermathecal diverticulum. D. Spermathecal ampulla. E. Penial sac and base of penis, containing end of atrial duct. F. Penial sac and tip of penis. G–I. Atrium and vasa deferentia: near the ectal end, in XI (G); near the transition to the prostate-covered section (H); and in the ental, prostate-covered section, with 1 vas deferens embedded in the atrial muscle (I). Scale bars (A, C) 200 Μm, (B, D–I) 100 Μm.
FIGURE 5. R. klamathensis n in Rhynchelmis subgenus Sutroa Eisen new rank, with two new species from western North America (Annelida, Clitellata, Lumbriculidae)
FIGURE 5. R. klamathensis n. sp. from Upper Klamath Lake, reproductive organs; sagittal sections (A–D, F), transverse sections (E, G–I). A. Spermathecal bulb, duct, and ampulla joining the gut. B. Spermathecal bulb and duct, with part of a diverticulum. C. Penial bulb and sac, with a retracted penis. D–E. Partially retracted penes, within penial bulbs. F. Atrium, vas deferens and posterior male funnel at 10/11. G. Ectal part of atrium in X, with vasa deferentia free in sperm sac. H. Ental part of atrium with vasa deferentia free within prostate layer; the small, anterior vas deferens approaching the atrium. I. Atrium near the ental end; the posterior vas deferens is approaching the atrium. Scale bars (A–F) 200 Μm, (G–I) 100 Μm.
FIGURE 6. R. diespluviae n in Rhynchelmis subgenus Sutroa Eisen new rank, with two new species from western North America (Annelida, Clitellata, Lumbriculidae)
FIGURE 6. R. diespluviae n. sp., external characters; worms from Rainy Day Creek, Idaho (A, B, E), from Hurst Creek, Washington (D), and from North Fork Clearwater River, Idaho (C). A–C. Ventral views of anterior ends, showing positions of genital pores. D. Lateral view of a worm with everted penes (proboscis was broken off). E. Chaetae, from left to right: a dorsal pair from XI, a ventral pair from XI, and a pair from about the posterior 1/3 of the worm. Scale bars (A–D) 2 mm, (E) 100 Μm.
FIGURE 4. R. klamathensis n in Rhynchelmis subgenus Sutroa Eisen new rank, with two new species from western North America (Annelida, Clitellata, Lumbriculidae)
FIGURE 4. R. klamathensis n. sp., reproductive organs drawn from dissected worms; from Upper Klamath Lake (A–F), from Mokelumne River (G–I). A–C, G–H, spermathecae; D–F, ectal ends of male ducts with penial bulbs; I, atrium and penial bulb. A. Spermatheca with a slightly branched diverticulum. B. An unusual specimen with highly branched spermathecal diverticula. C. A typical specimen with unbranched spermathecal diverticula. D. A completely retracted penial bulb. E. A slightly everted penial bulb. F. An everted penial bulb (same specimen as Fig. 2C). G. Mature spermatheca. H. Spermatheca from partiallymature worm. I. A relatively straight atrium with retracted penis (anterior vas deferens not shown). Scale bar 300 Μm (all drawings to same scale).
FIGURE 3. R. klamathensis n in Rhynchelmis subgenus Sutroa Eisen new rank, with two new species from western North America (Annelida, Clitellata, Lumbriculidae)
FIGURE 3. R. klamathensis n. sp., reproductive organs, from Upper Klamath Lake (A, C–E) and from Mokelumne River (B). A–B. Segments VIII–XI, from longitudinally-dissected specimens (facing left). C. Atrium and male ducts from a partiallymature worm (facing left). D. Spermathecae in VIII, reconstructed from transverse sections. E. Penial structures in X, reconstructed from transverse sections. Scale bars 500 Μm (all drawings to same scale). Arrows: position of chaetae (not in sectional plane here).
FIGURE 2. R. klamathensis n in Rhynchelmis subgenus Sutroa Eisen new rank, with two new species from western North America (Annelida, Clitellata, Lumbriculidae)
FIGURE 2. R. klamathensis n. sp. from Upper Klamath Lake (A–F, I–J) and from Mokelumne River (G–H). A–D. Lateral and ventral views of anterior segments of mature worms; penes everted in C–D. E–F. Lateral and ventral views of a specimen with partially-developed reproductive pores. G–H. Lateral views of a mature and immature worm. I. Lateral blood vessels in XXV, worm facing right; at lower right, the broken end of the anterior vessel (small arrow) indicates the junction with the perivisceral sinus. J. Chaetae: from left to right, a pair from mid-body region, a ventral pair from segment VIII, and a pair from about the posterior 1/4 of a worm. Scale bars (A–H) 2 mm, (I) 400 Μm, (J) 200 Μm.
FIGURE 1. R in Rhynchelmis subgenus Sutroa Eisen new rank, with two new species from western North America (Annelida, Clitellata, Lumbriculidae)
FIGURE 1. R. rostrata from the type locality, Mountain Lake, San Francisco (A–B) and from Sycan Marsh, Klamath watershed (C). A. spermatheca. B. Ectal end of male duct, showing the conical penis retracted within bulb, ectal part of the atrium with thick muscle layer, and the vasa deferentia. C. Anterior end of a whole worm, with everted penes. Scale bars (A–B) 400 Μm, (C) 2 mm.
FIGURE 2. R. aleutensis n in Rhynchelmis aleutensis n. sp. (Clitellata: Lumbriculidae) from Adak Island, Alaska
FIGURE 2. R. aleutensis n. sp. (A) Transverse section of male pore. (B) Transverse section of ectal part of atrium, with vasa deferentia. (C) Transverse section of ental part of atrium, with one vas deferens approaching the atrium, and the other within the atrial muscle coat. A prostate gland extends through the muscle coat, with granular vacuoles displacing the epithelial cells. (D) Sagittal section of the ental part of the atrium.
FIGURE 1. R. aleutensis n in Rhynchelmis aleutensis n. sp. (Clitellata: Lumbriculidae) from Adak Island, Alaska
FIGURE 1. R. aleutensis n. sp. (A–C) Ventral, ventrolateral, and lateral views of genital segments of whole worm, showing pores and claspers. The specimen was highly contracted, somewhat obscuring the secondary annulation. (D) Chaetae, from left to right: two ventral chaetae (segments VIII and XX) from a Finger Creek specimen, two ventral chaetae (VI and XII) and a pair (XXX) from a Little Thumb Creek specimen. (E–F) Transverse views of VIII, showing spermathecae joining the gut; and X, showing male pores and ectal part of atria; reconstructed from sections. No accessory glands were visible at the spermathecal pores of this specimen. (G) Sagittal view of atrium, from a dissection. Arrow indicates beginning of prostate glands (glands omitted in part for clarity). One of the vasa deferentia is embedded in the atrial muscle near the ental end; the other could not be followed in this specimen. Scale bars 100 m (D), 400 m (E–F).
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