Figure 2
From: Cryptic diversity in a gastrointestinal acanthocephalan of New World primates from Costa Rica
Scanning electron microscopy observations of P. elegans adults collected from S. o. citrinellus. (a) Side view of an adult showing five hook rows in the anterior portion of the body followed by a characteristic collar of the species (Bar: 500 µm). (b) Top view of the anterior portion of P elegans body. Six hooks per row can be observed (Bar: 300 µm). (c) Magnification of a hook (Bar: 100 µm). (d) Ribbon characteristic of P elegans observed after the protrusible anterior end.
