FIGURE 6 in Freshwater leech (Annelida: Hirudinida) distribution in the Canadian Province of Newfoundland and Labrador and adjacent regions: check-list, new records, new pigmentation forms, and Pleistocene refugia

FIGURE 6. Erpobdella obscura (Verrill) from Grand river, Ontario. A–E, G: Drawings by Susan Laurie-Bourque of CMNA 1984–0689. F by Peter Frank using Kodachrome film in May 1988. A, Anterior, ventral view; B, Anterior, dorsal view; C, Closeup of seminal vesicle; D, Well-developed male and female gonopores located between annuli; E, Posterior dorsal view; F, Photographs of two preserved leeches comparing the two color variations (ringed form on left and normal form on right); G, Dorsal view of dissected reproductive organs. The right side of the testes and spermduct are omitted on the right side. Broken lines show cut ends of organs. a, atrium; ejd, ejaculatory duct; ep, epididymis; fg, female gonopores; mg, male gonopores; lft, large follicles of testisacs; t, testisac; mft, multifollicular testisacs; nc, nerve chord. Ganglia are numbered in Roman numerals.