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Table 2

Measurements of type specimens used in the characterization and description of Tlacuatzoxyuris simpsoni, parasite of the gray opossum Tlacuatzin canescens (Allen, 1893) endemic to Mexico. Specimens were collected in the locality of Cruz Pintada, Morelos (18°27′58″N, 99°2′16″W, 1016 m), with the exception of AMNH IZC 331457, Tlacuatzoxyuris sp., from Las Tejas: Oaxaca (16°21′3.69″N, 95°20′3.86″W, 117 m).

Specimen Allotype Female 1 Female 3 Female 4 Female 5 Female 6 Female 7 Female 8 Female 9 Holotype Male 2 Male 3 Male 4 Male 5 AMNH IZC 331457
Body length 2630 2427 2416 1715 1721 1452 1608 1619 1548 1477 1229 1216 1294 1023
Maximum width 163 170 201 123 138 131 138 111 194 155 107 113 145 130
Cephalic vesicle length 0 124 113 109 106 102 101 94 94 79 73 89 84 70
Cephalic vesicle width 68 69 61 59 66 59 58 60 65 50 55 54 63 49
Depth of stoma 5 8 5 9 6 8 7 6 9 7 7 7 3
Pharynx 4 8 10 11 13 8 11 9
Pharynx width 12 10 14 16 11 13 23
Esophagus length 256 250 251 220 225 216 231 237 220 186 196 175 189 179
Isthmus 13 10 10 13 13 16 16 20 11 13 9 11 11 9
25 16 18 15 16 14 14 14 14 14 14 13
Corpus length 176 157 159 138 138 129 156 155 122 109 130 110 123 120
Corpus width 44 41 43 33 33 29 28 29 30 27 29 25 28 29
Bulb length 69 70 71 60 63 57 56 57 64 52 56 46 49 53
Bulb width 70 72 69 56 56 51 49 48 55 45 46 44 46 48
Distance anterior end to:
 Nerve ring 91 106 112 98 100 83 91 85 86 102 87 89 89 73 89
 Excretory pore 504 452 480 351 337 322 341 469 418 324 342 286
 Vulva 591 538 594 428 425 388 411 505 405
 Testis 570 472 474 280
 Start area rugosa 718 710 629 569 537
Spicule length 90 88 84 81 88 65
Spicule width 5 6 5 6 5
Gubernaculum 35 50 42 45 35 44
5 4 4 5 4 5
Ovejector 87 86
Post anal/cloacal terminus 166 348 415 363 372 245 271 347 413 52 46 45 42 45 31

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