Dr. Murai Éva - Gubányi András szerk.: Parasitologia Hungarica 28. (Budapest, 1995)
Fig. l.A,B- Original Gray Scale images; C — Enhancement of the outline; D — Filtering and enhancement of outline of the hook; E — Black and White image; F — Vectorized image; G — Landmark points on outline of the hook; H - Distance measurements on the hook: TL - total length , PCL - posterior chord length, ACL - anterior chord length, BL - blade length, BAL - basis length, GL - guard length, TW - total width, PEL - length of the perpendicular from the anterior chord to the lowest point of the curve of the blade
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