Yamasu T 1982 (citation)- description and illustration p 34-37. Descriptions vague and general- penis ? [Bush- uncertain?]. Yamasu T, Okazaki A 1987 (citation)- in formal list p 64.
Notes for the valid (accepted) taxonomic name
Notes for Praesagittifera gracilis
Yamasu T 1991 (citation)- "structure and function of ocelli and sagittocysts" in Acoels. Electron microscopy of structures. Species used in study were: Praesagittifera naikaiensis, Praesagittifera gracilis, Symsagittifera nitidae, Convoluta naviculae, Convoluta sp., Convoluta kikaiensis, Praesagittifera shikoki, Amphiscolops langerhansi, Amphiscolops sp., Pseudaphanostoma sp.
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