FIGURE 4. Eremidrilus humboldti n in New Eremidrilus species (Clitellata: Lumbriculidae) from western North America Part 1, species with two spermathecal segments

FIGURE 4. Eremidrilus humboldti n. sp. from Corral Creek A. Porophore with male pore from a whole mount. B. Atrium photographed at different focal plane of the same preparation in A. C. Atrium showing apical junction of vas deferens. D. Spermatheca in XII, ampulla extending into XIII, from a whole mount. E. Spermatheca, showing ampulla and duct (insert, in a separate plane). F. Spermathecal duct, detail, from a whole mount.