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Table 3 Comparative metrical data (in μm) for live and fixed cercariae of Echinostoma sp. IG and E. revolutum from natural infections in Radix spp. and Stagnicola palustris in Germany and Iceland

From: New cryptic species of the ‘revolutum’ group of Echinostoma (Digenea: Echinostomatidae) revealed by molecular and morphological data

Species Echinostoma sp. IG E. revolutum
  Live material Fixed material Live material Fixed material
  Range Range Mean Range Range Mean
Body length 260 - 362 228 - 292 254 303 - 427 159 - 234 188
Body width (max.) 184 - 249 90 - 97 94 193 - 251 107 - 125 112
Oral sucker length 45 - 63 36 - 46 42 56 - 71 38 - 52 45
Oral sucker width 50 - 66 37 - 45 42 53 - 68 37 - 49 42
Ventral sucker length 54 - 72 43 - 54 48 63 - 83 47 - 66 55
Ventral sucker width 57 - 81 44 - 47 46 58 - 83 48 - 60 54
Pharynx length 25 - 29 16 - 25 20 27 - 36 20 - 24 21
Pharynx width 22 - 26 12 - 19 15 25 - 29 13 - 14 13
Oesophagus length 56 - 89 61 - 96 78 54 - 103 30 - 55 40
Tail length 334 - 353 296 - 378 344 364 - 417 316 - 405 367
Tail width (at base) 44 - 49 30 - 34 32 39 - 52 20 - 36 27
Tail-tip length 67 - 83 - - 35 - 93 - -
Proximal dorsal fin-fold length 49 - 63 50 - 41 - 153 - -
Proximal dorsal fin-fold width 14 - 15 - - 5 - 13 8 - 11 9
Distal dorsal fin-fold length 147 - 212 106 - 154 120 72 - 159 - -
Distal dorsal fin-fold width 30 - 35 14 - 21 16 7 - 16 - -
Proximal ventral fin-fold length 47 - 90 73 - 51 - 116 85 -
Proximal ventral fin-fold width 12 - 15 - - 4 - 6 5 -
Distal ventral fin-fold length 44 - 64 41 - 74 - 202 99 - 157 125
Distal ventral fin-fold length 6 - 18 8 - 7 - 14 - -