stylet base conical

The stylet is a slightly curved funnel with a widened proximal base and a distal hook-like bend turned at an angle of about 90° from the main axis. p. 1001

Taxonomic name:

Macrostomum australiense (Macrostomorpha)

Macrostomum virginianum Fig 2-4.jpg

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Illustration

Keywords:

stylet base conical (Image keywords), stylet shaft with one turn (Image keywords), stylet tip opening oblique (Image keywords), stylet tip thickening absent (Image keywords), stylet shaft decoration other (Image keywords), sperm brush absent (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords), sperm shaft distinct (Image keywords)

Description:

The stilette is curved and obliquely truncated on its convex side. This conical tube is bent at a right angle near its proximal end. p. 27

Taxonomic name:

Macrostomum virginianum (Macrostomorpha)

Macrostomum beaufortensis Fig 4.jpg

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Imaging technique:

Illustration

Keywords:

stylet base conical (Image keywords), stylet tip opening subterminal (Image keywords), stylet shaft with one turn (Image keywords), stylet shaft decoration absent (Image keywords), stylet tip thickening unilateral pointed (Image keywords)

Description:

The stilette is a greatly curved and highly sharpened funnel with a broad undulating basal rim. p. 234

Taxonomic name:

Macrostomum beaufortensis (Macrostomorpha)

Macrostomum beauchampi Fig 9.jpg

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Imaging technique:

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Keywords:

stylet base conical (Image keywords), stylet tip opening terminal (Image keywords), stylet tip thickening absent (Image keywords), stylet shaft with more than one turn (Image keywords), stylet shaft decoration other (Image keywords)

Taxonomic name:

Macrostomum beauchampi (Macrostomorpha)

Macrostomum boreale Fig 16-18.jpg

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Imaging technique:

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Keywords:

stylet base conical (Image keywords), stylet shaft with one turn (Image keywords), stylet shaft decoration absent (Image keywords), section (Image keywords), stylet tip opening oblique (Image keywords), stylet tip thickening absent (Image keywords)

Taxonomic name:

Macrostomum boreale (Macrostomorpha)

Macrostomum beaufortensis Fig 10-15.jpg

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Imaging technique:

Illustration

Keywords:

habitus total (Image keywords), stylet base conical (Image keywords), stylet tip opening subterminal (Image keywords), stylet shaft with one turn (Image keywords), stylet shaft decoration absent (Image keywords), eyes normal (Image keywords), stylet tip thickening unilateral pointed (Image keywords), sperm bristles absent (Image keywords), sperm feeler distinct (Image keywords)

Taxonomic name:

Macrostomum beaufortensis (Macrostomorpha)

Macrostomum intermedium Fig 24-25.jpg

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Imaging technique:

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Keywords:

habitus total (Image keywords), stylet base conical (Image keywords), stylet tip thickening unclear (Image keywords), stylet shaft decoration absent (Image keywords), stylet tip opening unclear (Image keywords), eyes normal (Image keywords), stylet shaft wavy (Image keywords)

Taxonomic name:

Macrostomum intermedium (Macrostomorpha)

Macrostomum glochistylum Fig 13-19.jpg

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Imaging technique:

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Keywords:

habitus total (Image keywords), eyes small (Image keywords), stylet base conical (Image keywords), stylet tip thickening unclear (Image keywords), stylet shaft straight (Image keywords), stylet tip opening unclear (Image keywords), stylet shaft decoration lined (Image keywords), sperm shaft indistinct (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords)

Description:

The small reniform eyes are not embedded in the tissues of the ganglia. The penis-stilette is a long, curved funnel which extends from a widened proximal base to end in a slightly bent obliquely truncated terminus. The stilette termination is distinctly provided with a thin lip which projects slightly beyond the opening proper. p. 195 The sperm cell in this form is a spindler-shaped structure which is much shorter than usual for Macrostomum. Chromatin granules are present in the anterior region of the cell, while posteriorly directed setae are absent. p. 196

Taxonomic name:

Macrostomum glochistylum (Macrostomorpha)

Macrostomorpha

taxonomy and phylogeny

stylet base conical