stylet tip thickening unilateral pointed

Macrostomum distinguendum Fig 3c.jpg

Small stylets in small specimens were usually straight and not curved like those found in larger specimens. p. 59

Macrostomum xiamensis Fig 4-13.jpg

Acerose smooth penis stylet, no chitin valve in the surface. Its far-forth end show helical curly form. The penis stylet is like end of injector, opening at outboard part of helical bend. p. 703

Macrostomum sensitivum.jpg

Die Mündung der schwach gebogenen Spitze erscheint ausgeschweift und überdies auf der einen Seite geschlitzt. p. 111

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