FIGURE 2 in Stoibocephalum n. gen. (Cestoda: Lecanicephalidea) from the sharkray, Rhina ancylostoma Bloch & Schneider (Elasmobranchii: Rhinopristiformes), from northern Australia

FIGURE 2. (A–M) Scanning electron micrographs and (N) light micrograph of histological section of Stoibocephalum arafurense n. gen., n. sp. (A) Scolex; small letters indicate location of detail in Figs. 2B–E. (B) Surface of scolex proper anterior to suckers covered with scolopate spinitriches and acicular to capilliform filitriches. (C) Scolex proper surface between suckers covered with capilliform filitriches. (D) Sucker surface covered with scolopate spinitriches and acicular to capilliform filitriches. (E) Strobilar surface covered with shorter capilliform filitriches and small coniform spinitriches (see inset) at posterior proglottid margin. (F) Mature proglottid with everted cirrus. Small letter indicates detail in Fig. 2I. (G) Close-up of base of cirrus. Small letter indicates detail in Fig. 2H. (H) Surface of base of cirrus covered with capilliform filitriches. (I) Close-up of proglottid dehiscence; white arrowhead indicates egg. (J) Frontally bisected scolex with retracted apical organ. White arrowheads indicate boundary between apical organ and apical modification of scolex proper (AMSP); black arrowheads indicate boundary between AMSP with acicular filitriches and AMSP with capilliform filitriches; and grey arrowheads indicate puckered rim of AMSP. Small white letters indicate detail in Figs. 2K–L. (K) Invaginated surface of AMSP covered with capilliform filitriches. (L) Surface of the AMSP flanking the apical organ covered with acicular filitriches. (M) Apical organ surface covered with acicular filitriches. (N) Longitudinal section of scolex in situ. White arrowheads indicate boundary between apical organ and AMSP; black arrowheads indicate boundary between AMSP with acicular filitriches and AMSP with capilliform filitriches; and grey arrowheads indicate protruded rim of aperture of AMSP (see arrowheads in Fig. 2J for comparison). Abbreviation: AO, apical organ.Published as part of Cielocha, Joanna J. & Jensen, Kirsten, 2013, Stoibocephalum n. gen. (Cestoda: Lecanicephalidea) from the sharkray, Rhina ancylostoma Bloch & Schneider (Elasmobranchii: Rhinopristiformes), from northern Australia, pp. 558-568 in Zootaxa 3626 (4) on page 563, DOI: 10.11646/zootaxa.3626.4.9, http://zenodo.org/record/21876