FIGURE 4. Eremidrilus chalonensis n in New Nearctic Eremidrilus species (Clitellata: Lumbriculidae). Part 2, western species with one spermathecal segment

FIGURE 4. Eremidrilus chalonensis n. sp. All from type specimens. A. Anterior body section-bearing proboscis. B. Clitellum in XI. C, D. Atrium (complete in C) and male pore in prominent porophore. E, F. Spermatheca and glands around spermathecal pore. G. Spermathecal pore viewed from ventral surface. H. Nephridial vesicle in a whole-mount specimen (2 photos combined). I. Diatoms in the gut of the worms. (A, B, G, H, whole mounts; C–F, I, histological sections. All scales are 50 µm.)