sperm bristles present

Macrostomum ruebushi var granulophorum Fig 19-23.jpg

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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 bulbous (Image keywords), stylet shaft decoration lined (Image keywords), stylet shaft wavy (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords)

Description:

This stilette is lined by bands of muscles which presumably aid in ejaculation. The stilette has a bend of almost a right angle at its sharpened termination and opening. p. 36

Taxonomic name:

Macrostomum ruebushi granulophorum (Macrostomorpha)

Macrostomum riedeli Fig 1-7.jpg

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Keywords:

habitus total (Image keywords), eyes small (Image keywords), stylet base conical (Image keywords), stylet tip opening oblique (Image keywords), stylet tip thickening absent (Image keywords), stylet shaft with more than one turn (Image keywords), stylet shaft decoration other (Image keywords), sperm feeler indistinct (Image keywords), sperm bristles present (Image keywords)

Description:

The penis -stilette is funnel- shaped with an obliquely truncated base. (Distal?) opening is oval in shape and terminally truncated. p. 291

Taxonomic name:

Macrostomum riedeli (Macrostomorpha)

Macrostomum ruebushi var recurvostylum Fig 24-26.jpg

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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 ruebushi var frigoriphilum Fig 14-18.jpg

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Imaging technique:

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Keywords:

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

Description:

The fairly large reniform eyes are oriented in a latero-anterior fashion. The penis-stilette is a slightly curved funnel with a distally sharpened point. The opening is terminal. p. 33

Taxonomic name:

Macrostomum ruebushi frigorophylum (Macrostomorpha)

Macrostomum tuba Fig 13.jpg

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Imaging technique:

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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 vejdovskyi Fig 15-17.jpg

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Keywords:

habitus total (Image keywords), stylet tip opening subterminal (Image keywords), stylet shaft with one turn (Image keywords), eyes normal (Image keywords), stylet base tubular (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)

Taxonomic name:

Macrostomum vejdovskyi (Macrostomorpha)

Macrostomum saifunicum Fig 1-5.jpg

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Imaging technique:

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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), eyes normal (Image keywords), stylet shaft decoration ridged (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords)

Taxonomic name:

Macrostomum saifunicum (Macrostomorpha)

Macrostomum tennesseensis Fig 7-10.jpg

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Imaging technique:

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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 symmetrical (Image keywords), stylet base tubular (Image keywords), stylet shaft decoration lined (Image keywords), sperm feeler distinct (Image keywords), sperm bristles present (Image keywords)

Taxonomic name:

Macrostomum tennesseensis (Macrostomorpha)

Macrostomum virginianum Fig 18-24.jpg

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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)

Macrostomum virginianum Fig 1.jpg

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Keywords:

sperm feeler indistinct (Image keywords), sperm bristles absent (Image keywords), sperm shaft indistinct (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 virginianum (Macrostomorpha)

Macrostomorpha

taxonomy and phylogeny

sperm bristles present