FIGURE 4 in Phylogenetic relationships, host associations, and three new species of a poorly known group of "tetraphyllidean" tapeworms from elasmobranchs

FIGURE 4. Scanning electron micrographs of Pentaloculum grahami n. sp. (A) Scolex, small letters indicate location of details in micrographs B–H. (B) Distal bothridial surface densely covered with long-tipped aristate gladiate spinitriches interspersed with gladiate spinitriches and capilliform filitriches. (C) Apex of scolex covered with gladiate spinitriches and densely packed capilliform filitriches. (D) Scolex proper densely covered with gladiate spinitriches interspersed with capilliform filitriches. (E) Proximal surface of margin of anteriormost loculus densely covered with long-tipped aristate gladiate spinitriches interspersed with gladiate spinitriches and capilliform filitriches. (F) Proximal surfaces of margins of anterior pair of loculi densely covered with long-tipped aristate gladiate spinitriches interspersed with gladiate spinitriches and capilliform filitriches. (G) Proximal surfaces of margins of posterior pair of loculi densely covered with long-tipped aristate gladiate spinitriches interspersed with gladiate spinitriches and capilliform filitriches. (H) Proximal surfaces away from margins of posterior pair of loculi densely covered with short-tipped wide aristate gladiate spinitriches, filitriches not observed.