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Ceuta, Ceuta Province, Spain
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Palma de Mallorca, Balearic Islands, Spain
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Drobak, Akershus Fylke, Norway
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Note that the pigment patch isnt always this obvious - it varies a lot. Circumglobal species - or just a common look?
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Benzu, Ceuta Province, Spain
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Combarro, Galicia, Spain
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Circumglobal species or just a popular look?
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Some individuals come without pigmentation. We checked the sequences to assure the species ID. But they are cute when they wear the stripes!
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O Grove, Galicia, Spain
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Ceuta, Ceuta Province, Spain
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Specimen from Shengshan Island, East China Sea. Hiroshi Kajihara identifier. Small pigmented Tetrastemmas are in need of taxonomic revision! See Strand & Sundberg 2005 e.g.
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Santa Pola, Valencia, Spain
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Drobak, Akershus Fylke, Norway
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Ceuta, Ceuta Province, Spain
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Drobak, Akershus Fylke, Norway
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Pedras Negras, Galicia, Spain
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Plate4.16 Portion of a sperm-sac exhibiting a streaky and granular aspect from the varying nature of the contents
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Plate4.14 Cephalic ganglia of Tetrastemma flavida
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Plate3.9 Stylets of Tetrastemma flavida
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Plate2.9 Structure of the stylet-region in Tetrastemma flavida
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Dorsal view of anterior portion of bodyCoe, W. R. (1901). The Nemerteans of the Expedition. Proceedings of the Washington Academy of Sciences, Vol. 3, 1-110.
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Tetrastemma bilineatum: habitus
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Tetrastemma quadrilineatum: habitus
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Tetrastemma reticulatum: habitus