FIGURE 4 in Morphological and molecular characterization of adult hairworms (Phylum Nematomorpha) from Iceland and the Faroe Islands, and documentation of their non-adult stages and hosts

FIGURE 4. Light micrographs showing the anterior and posterior ends of a male and female, a Gordian knot, egg strings and eggs of Gordionus sp. from Iceland. (A) Tapered anterior end of a male. Note the dark collar. Scale bar = 0.2 mm. (B) Male showing bifurcated posterior region. Scale bar = 0.2 mm. (C) Female showing the location of the cloaca (arrow) on the terminal end. Scale bar = 0.4 mm. (D) Mating behavior of male and female. Note the sperm drop on female terminal end (arrow). Scale bar = 4 mm. (E) Egg strings. Scale bar 0.25 mm. (F) Higher magnification of egg strings showing tightly aggregated undeveloped eggs. Scale bar = 0.25 mm. (G) Typical shape of undeveloped eggs within egg strings. Scale bar = 50 µm.