sperm shaft distinct

sperm shaft distinct

Macrostomum appendiculatum Fig 7-8.jpg

Macrostomum appendiculatum Fig 7-8.jpg

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Imaging technique:

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Keywords:

stylet tip opening subterminal (Image keywords), stylet shaft with one turn (Image keywords), stylet base bulbous (Image keywords), stylet shaft decoration lined (Image keywords), stylet tip thickening unilateral pointed (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords), sperm shaft distinct (Image keywords)

Taxonomic name:

Macrostomum appendiculatum (Macrostomorpha)

Macrostomum virginianum Fig 2-4.jpg

Macrostomum virginianum Fig 2-4.jpg

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Imaging technique:

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 5-6.jpg

Macrostomum beaufortensis Fig 5-6.jpg

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Imaging technique:

Illustration

Keywords:

sperm bristles absent (Image keywords), sperm brush absent (Image keywords), sperm feeler distinct (Image keywords), sperm shaft distinct (Image keywords)

Taxonomic name:

Macrostomum beaufortensis (Macrostomorpha)

Macrostomum bulbostylum Fig 32-35.jpg

Macrostomum bulbostylum Fig 32-35.jpg

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Imaging technique:

Illustration

Keywords:

stylet tip opening terminal (Image keywords), stylet tip thickening symmetrical (Image keywords), stylet shaft straight (Image keywords), stylet base tubular (Image keywords), stylet shaft decoration lined (Image keywords), sperm brush absent (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords), sperm shaft distinct (Image keywords)

Taxonomic name:

Macrostomum bulbostylum (Macrostomorpha)

Macrostomum japonicum Fig 26-28.jpg

Macrostomum japonicum Fig 26-28.jpg

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Imaging technique:

Illustration

Keywords:

habitus total (Image keywords), eyes small (Image keywords), stylet shaft with one turn (Image keywords), stylet shaft decoration absent (Image keywords), stylet tip opening terminal (Image keywords), stylet tip thickening absent (Image keywords), stylet base bulbous (Image keywords), sperm feeler indistinct (Image keywords), sperm bristles absent (Image keywords), sperm shaft distinct (Image keywords)

Description:

eyes small, reniform. The penis-stilette is a curved and distally hooked funnel with a terminal opening. p. 204

Taxonomic name:

Macrostomum japonicum (Macrostomorpha)

Macrostomum reynoldsi Fig 21-25.jpg

Macrostomum reynoldsi Fig 21-25.jpg

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Imaging technique:

Illustration

Keywords:

stylet tip opening subterminal (Image keywords), stylet tip thickening unclear (Image keywords), stylet shaft with more than one turn (Image keywords), stylet shaft decoration other (Image keywords), stylet base tubular (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords), sperm shaft distinct (Image keywords)

Taxonomic name:

Macrostomum reynoldsi (Macrostomorpha)

Macrostomum ruebushi var truncatum Fig 31-34.jpg

Macrostomum ruebushi var truncatum Fig 31-34.jpg

Licence:

Imaging technique:

Illustration

Keywords:

habitus total (Image keywords), stylet shaft with one turn (Image keywords), stylet tip opening oblique (Image keywords), stylet tip thickening absent (Image keywords), stylet base bulbous (Image keywords), stylet shaft decoration other (Image keywords), eyes normal (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords), sperm shaft distinct (Image keywords)

Description:

The penis-stilette is a funnel with a crenate base which is slightly obliquely truncated. The curved and pointed termination has a small distal lip. The opening is terminal. p. 45

Taxonomic name:

Macrostomum ruebushi truncatum (Macrostomorpha)

Macrostomum ruebushi var recurvostylum Fig 24-26.jpg

Macrostomum ruebushi var recurvostylum Fig 24-26.jpg

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Imaging technique:

Illustration

Keywords:

habitus total (Image keywords), eyes small (Image keywords), stylet shaft with one turn (Image keywords), stylet tip opening oblique (Image keywords), stylet tip thickening absent (Image keywords), stylet base tubular (Image keywords), stylet shaft decoration lined (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords), sperm shaft distinct (Image keywords)

Description:

The eyes are small, black, and are not embedded in the brain tissue. The penis-stilette is an irregularly reduced funnel with a pointed end hooked into a right hand bend. The opening is terminal and is toward the posterior. The base is wide and crenated. p. 39

Taxonomic name:

Macrostomum ruebushi recurvostylum (Macrostomorpha)

Macrostomum tuba Fig 13.jpg

Macrostomum tuba Fig 13.jpg

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Imaging technique:

Illustration

Keywords:

stylet shaft with one turn (Image keywords), stylet shaft decoration absent (Image keywords), stylet tip opening terminal (Image keywords), stylet tip thickening symmetrical (Image keywords), stylet base tubular (Image keywords), sperm brush absent (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords), sperm shaft distinct (Image keywords)

Description:

The distal part of the stilette is slightly curved and has an expanded termination which is split in two parts. p. 128

Taxonomic name:

Macrostomum tuba (Macrostomorpha)

Macrostomum virginianum Fig 18-24.jpg

Macrostomum virginianum Fig 18-24.jpg

Licence:

Imaging technique:

Illustration

Keywords:

habitus total (Image 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), eyes normal (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords), sperm shaft distinct (Image keywords)

Description:

The penis-stilette is unusually small for an animal of this size. It measures 35micro in length. Morphologically, the stilette is a simple, curved, funnel-like tube with a sub-terminal opening which is subtended by the pointed end. The sperm-cell is spindle-shaped. Two setae are present and there is a very large undulating 'Mittelrippe' on the mid-line of the surface of the cell extending from feeler to 'tail'. Chromatin material is not visible in this sperm-cell. p. 132/133

Taxonomic name:

Macrostomum virginianum (Macrostomorpha)

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