Redescription of Tubulideres seminoli Sørensen et al., 2007 and notes on Wollunquaderes majkenae Sørensen & Thormar, 2010 (Kinorhyncha, Cyclorhagida): Morphology, postembryonic development, life cycle, and new characters

In Tubulideres seminoli, several morphological characters were previously interpreted differently or overlooked like the assumed mouth cone weir, placids separated from the trunk in a specific arrangement, trunk segments 2-11 revealing a single tergal plate, whose lateral ends meet midventrally, female-specific gland cell outlets, and type-5 sensory spots. The gland cell outlets on segments 8 and 9 consist of a circular area with micropapillae at the surface, a strongly sclerotized tube through the trunk cuticle, and a bulbous subcuticular structure; similar gland cell outlets were previously reported from female specimens of species of Centroderes. The findings in T. seminoli and W. majkenae prompted also re-examination of the assumed mouth cone weir and the outer oral styles of adult Antygomonas paulae and Semnoderes sp. Characters of the outer oral styles, placids, and postembryonic stages are re-evaluated and compared among Kinorhyncha.