Paraspadella is a genus of chaetognaths in the family Spadellidae. Paraspadella was originally considered as Spadella before a revision separated that genus into three genera: Spadella, Paraspadella, and Gephyrospadella, the last of which is now synonymised to Paraspadella. The initial division was based on previous knowledge of three groups of Spadella, in a similar manner in which Sagitta was divided into a family of genera.Tokioka, T. (1965). The taxonomical outline of Chaetognatha. Publications of the Seto Marine Biological Laboratory, 12(5), 335–357. Paraspadella is differentiated from Spadella by the presence of disparate (digital) adhesive organs, present in the former to various degrees, but entirely absent in the latter.
Species Paraspadella anops Bowman & Bieri, 1989Bowman, T. & Bieri, R. (1989). Paraspadella anops, new species, from Sagittarius Cave, Grand Bahama Island, the second troglobitic chaetognath. Proceedings of the Biological Society of Washington, 102(3), 586–589. Paraspadella caecafea (von Salvini-Plawen, 1986) Paraspadella gotoi Casanova, 1990Casanova, J. (1990). A new species of Paraspadella (Chaetognatha) from the coastal waters of Japan. Proceedings of the Biological Society of Washington, 103(4), 907–912. Paraspadella johnstoni (Mawson, 1944)Mawson, P. M. (1944). Some species of the chaetognath genus Spadella from New South Wales. Transactions of the Royal Society of South Australia, 68, 327–333. Paraspadella legazpichessi (Alvariño, 1981)Alvariño, A. (1981). Spadella legazpichessi, a new benthic chaetognath from Enewetak, Marshall Islands. Proceedings of the Biological Society of Washington, 94, 107–121. Paraspadella nana (Owre, 1963)Owre, H. B. (1963). The genus Spadella (Chaetognatha) in the western North Atlantic Ocean with descriptions of two new species. Bulletin of Marine Science, 13, 378–390. Paraspadella pimukatharos (Alvariño, 1987)Alvariño, A. (1987). Spadella pimukatharos, a new benthic chaetognath from Santa Catalina Island, California. Proceedings of the Biological Society of Washington, 100, 125–133. Paraspadella pulchella (Owre, 1963) Paraspadella schizoptera (Conant, 1895)Conant, F. S. (1895). Description of two new chaetognaths: Spadella schizoptera and Sagitta hispida. Johns Hopkins University Circulars, 14(119), 77–78. Paraspadella sheardi (Mawson, 1944)
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