Turbellarian taxonomic database
Florianella bipolaris Diagnosis
1.5 mm long, spicules arranged in transverse rings (approximately 110 in number). Each ring contains a circlet of scale-shaped spicules which protrude slightly with their tips over the epidermis, an da circlet of segment-shaped spicules which are situated in the deeper layer of the basement membrane. Scales and segments are oriented in the opposite directions thus crossing each other. the orientation of the spicules in one transverse ring is the same as in the two adjacent rings. The whole pattern of spicular arrangement, however, is turned around by 180° in about midbody at a special belt region. Regular scales 36 µm long, 7.5 µm wide; regular segments 19 µm long, 7 µm wide, spicules in the belt region 20 µm long and 4.5 µm wid. Scales and segments at the anterior and posterior ends, more slender and provided with a more pronounced tip. Proboscis 25-35 µm long; proboscis sheath 40-50 µm long, ciliated. Mouth opening at U18; pharynx approximately 50-60 µm long, pointed ventrorostrally. Pharyngeal cavity long (50-100µm). Seminal vesicle 100 µm long, 40 µm wid; connected with a long ductus intervesicularis to the 40 µm long and 30 µm wide prostatic vesicle. male stylet hook-shaped, 50 µm long; accessory stylet hook-shaped, 30 µm long. Vitellarium and germarium unpaired. Uterus 90 µm long. Genital pore at U94.
[From Rieger RM, Sterrer W (1975): 225]
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