FIGURE 18 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)

FIGURE 18. Metaphire hilgendorfi. (A, B) Right male pore region and the associated genital markings, showing presence of a male pore only on one side and absence on the other (USNM 1421430). (C) Left male pore region with an everted copulatory pouch. (D) Right spermathecal pores in 6/7/8 and pre-setal genital markings on VIII and IX; ventrolateral view. (E) Pre-setal genital markings mid-ventral on VIII and IX. (F) Left spermatheca and accessory glands in VIII. (G) Left prostate gland and its duct (arrow). (H) Right intestinal caecum. C, E–H from one specimen in USNM 125091; D from another specimen in USNM 125091.