FIGURE 12. Terminal structure of the proboscis of H. lineata at increasing magnifications. A (HL-9L), ventral view. Everted proboscis showing unusually large mouth; tip of proboscis with circular array of lobules; the proboscis and its lumen widens near the tip. B, C, salivary ductules and close-up of lobules at the proboscis tip; D, salivary pores with secretions at tip of proboscis. Abbreviations: lu, lumen of proboscis; lt, lobule of tip of proboscis; mo, mouth; os, oral sucker; ot, opening of tip of proboscis; sd, salivary ductule; sp, salivary pores at tip of proboscis. Scale bars: A, 1.0 mm; C, 0.1 mm.

Published as part of Sawyer, Roy T., 2024, Biology, morphology and taxonomy of a snail-feeding leech from North Carolina, USA, provisionally identified as Helobdella lineata (Verrill, 1874) (Glossiphoniidae): First evidence for extra-oral digestion in the Hirudinea, pp. 151-182 in Zootaxa 5453 (2) on page 166, DOI: 10.11646/zootaxa.5453.2.1, http://zenodo.org/record/11233692