FIGURES 15–20 in Description of Pallisentis thapari n. sp. and a re-description of Acanthosentis seenghalae (Acanthocephala, Quadrigyridae, Pallisentinae) using morphological and molecular data, with analysis on the validity of the sub-genera of Pallisentis

FIGURES 15–20. Scanning electron micrographs: 15. Proboscis of Pallisentis thapari n. sp. showing hooks that decrease in size from anterior to posterior rings; 16. Trunk spines of P. thapari n. sp. with optically dense Y-shaped core and conical exterior; 17. Hooked point of a collar spine of P. thapari n. sp; 18. Bursa of a male worm of P. thapari n. sp.; 19. Trunk spines of a specimen of Acanthosentis seenghalae; 20. Proboscis of a male worm of A. seenghalae. Scale bars: 15 = 50 µm; 16, 18 and 19 = 100 µm; 17 = 10 µm; 20 = 20 µm.