Von den Spermazellen konnten, allerdings nur am lebenden Objekt, folgende zwei Typen erkannt werden: 1. (Bilder 36 und 37) Der fadenförmige Körper erweitert sich an beiden Enden oval. Das breitere Ende, das bei der Bewegung vorangeht, trägt noch einen fadenförmigen Fortsatz. In der hinteren Erweiterung befinden sich drei bis fünf dunkle Punkte, die vermutlich Chromatinbrocken darstellen. 2. (Bild 39) Beim Typus 2 der Samenzelle trägt der lange fadenförmige Körper nur vorn eine Erweiterung. Sie hat keinen Fortsatz und enthält caudal ein Körperchen, anscheinend den Kern.
Imaging Technique: Illustration
Macrostomorpha: Macrostomum tuba
Keywords: stylet base tubular; stylet shaft decoration absent; stylet tip opening terminal; stylet tip thickening symmetrical; stylet shaft with one turn
Image Galleries: Taxonomic drawings and images
Keywords: eyes large; stylet base tubular; stylet shaft curved; stylet shaft decoration absent; stylet tip opening terminal; stylet tip thickening symmetrical; habitus total
Imaging Technique: Illustration
Macrostomorpha: Macrostomum tuba
Image Galleries: Taxonomic drawings and images
Penis stylet very slightly spiralled; distal end opening superior, i.e. on concave side p. 48
Imaging Technique: Illustration
Macrostomorpha: Macrostomum tuba
Keywords: stylet base tubular; stylet shaft curved; stylet shaft decoration absent; stylet tip opening terminal; stylet tip thickening symmetrical
Image Galleries: Taxonomic drawings and images
The penial tube has a slight bend at its proximal end, and a distinct and sharp bend at its distal end. The distal tip of the stylet is blunt with a terminal opening. The walls appeared of uniform thickness along the length of the tube. p. 56
Keywords: eyes normal; stylet base tubular; stylet shaft decoration absent; stylet tip opening terminal; stylet tip thickening absent; habitus total; stylet shaft with one turn
Imaging Technique: Illustration
Macrostomorpha: Macrostomum nairobiense
Image Galleries: Taxonomic drawings and images
The penis stylet is a more-or-less straight tube which diminishes in diameter towards its distal tip; in fact the latter is slightly bent as shown in Figs. 5Band C. The walls of the tube around the distal terminal opening are slightly thickened. p. 54
Keywords: eyes normal; stylet base tubular; stylet shaft decoration absent; stylet shaft with more than one turn; stylet tip opening terminal; stylet tip thickening absent; habitus total
Imaging Technique: Illustration
Macrostomorpha: Macrostomum georgeense
Image Galleries: Taxonomic drawings and images
The penis stylet is hook-shaped; it is slightly bent in another plane at a point indicated by the arrow. Its walls are not thickened at any particular point. Its distal opening is terminal. p. 53
Keywords: eyes normal; stylet base tubular; stylet shaft decoration absent; stylet tip opening terminal; stylet tip thickening absent; stylet tip thickening symmetrical; habitus total; stylet shaft with one turn
Imaging Technique: Illustration
Macrostomorpha: Macrostomum reynoldsoni
Image Galleries: Taxonomic drawings and images
The eyes are small with an irregular shape with dimensions of 8 to 12 micrometer. The penis stylet has its distal end bent at more-or-Iess a right angle to the main tube. This tip constitutes the thickened wall of the tube. The distal opening is situated at the heel of the stylet. p. 51
Keywords: eyes normal; stylet base tubular; stylet shaft decoration absent; stylet shaft straight; stylet shaft wavy; stylet tip opening terminal; stylet tip thickening symmetrical; habitus total
Imaging Technique: Illustration
Macrostomorpha: Macrostomum christinae
Image Galleries: Taxonomic drawings and images
Keywords: eyes normal; stylet base tubular; stylet shaft decoration absent; stylet tip opening terminal; stylet tip thickening symmetrical; habitus total; stylet shaft with one turn
Imaging Technique: Illustration
Macrostomorpha: Macrostomum tuba
Image Galleries: Taxonomic drawings and images
Keywords: habitus detail; photo; stylet base tubular; stylet shaft curved; stylet shaft decoration absent; stylet tip opening terminal; stylet tip thickening symmetrical; eyes small; habitus total; section
Imaging Technique: Illustration
Macrostomorpha: Macrostomum tuba
Image Galleries: Taxonomic drawings and images
Die Spermatozoen weisen eine dickere und in etwa 8-12 Schlingen zusammengelegte Mittelpartie auf, die beiderseits in äusserst feine Fortsätze ausgeht. Der hintere, die Länge der Mittelpartie erreichende feine Fortsatz zeigt stets lebhafte, weitausgreifende Schlängelungen, während die Schlangenbewegungen der Mittelpartie gleichmässig und in kleineren Wellen verlaufen. p. 241
Imaging Technique: Illustration
Macrostomorpha: Macrostomum hystrix
Keywords: sperm bristles present; sperm feeler distinct; sperm shaft distinct; stylet base tubular; stylet shaft decoration absent; stylet tip opening terminal; stylet tip thickening symmetrical; section; stylet shaft with one turn
Image Galleries: Taxonomic drawings and images