Figure 5 in Recent evolution of ancient Arctic leech relatives: systematics of Acanthobdellida

Figure 5. General morphology of Acanthobdella peledina (A–C, E) and Paracanthobdella livanowi (D, F, G) visualized by stereo microscope. A–C, E, A. peledina: medium-sized specimen (7 mm; Sweden; A), large specimen (12 mm; Norway; B), very large specimen (25 mm; Finland; C); and anterior body region of specimen shown in B (E; note higher magnification). D, F, G, P. livanowi: small specimen (5 mm; Kamchatka; D), anterior body region of specimen figured in D (F; note higher magnification) and anterior body region of a large specimen (12 mm; Kamchatka; G). Arrow, anterior sucker; double arrows, posterior sucker; d, deepening between pairs of chaetae; Arabic numerals mark rows of chaetae.