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Fig. 2 | Parasites & Vectors

Fig. 2

From: Diversity and phylogenetic relationships of European species of Crepidostomum Braun, 1900 (Trematoda: Allocreadiidae) based on rDNA, with special reference to Crepidostomum oschmarini Zhokhov & Pugacheva, 1998

Fig. 2

SEM micrographs of the surface topography of the anterior region of the body of Crepidostomum oschmarini. a Ventral view of mature worm. b The constant pattern of 5 papillae on the posterior rim of the oral sucker, 3 symmetrical pairs of papillae in the middle of the anterior rim (white circle) and a group of 8 papillae underneath the sucker rim (black circle). c 3 paired symmetrical papillae (white circle) and the distribution of irregular papillae on the anterior rim. d Interlobular field with marked (white circle) of 6 symmetrical papillae, irregular papillate and non-papillate sensory endings and single papilla on each ventro-lateral lobe (black circles). e Regular pattern of different sizes of the posteriormost, middle and anteriormost pairs of 6 symmetrical papillae on anterior rim. f Regular arrangement of 8 papillae ventro-lateral to the posterior sucker rim (black circle). g Single papilla (black circle) on the surface of a ventro-lateral lobe. h Papillae close to the base of a dorso-lateral lobe. i Ciliated papillate and non-papillate sensory endings on interlobular field. j Ciliated papilla. Abbreviations: ap, anteriormost papilla; c, cilium; cr, cirrus; dll, dorso-lateral lobe; dml, dorso-median lobe; fp, forebody papillae; hb, hindbody; ep, excretory pore; l, lobe; mp, middle papilla; np, non-papillate sensory ending; oa, oral aperture; os, oral sucker; p, ciliated papilla; pp, posteriormost papilla; pr, posterior rim of oral sucker; tr, transverse tegumental ridges; vll, ventro-lateral lobe; vs, ventral sucker

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