"Examination of illustrations kindly made available by Dr Van den Spiegel, has shown that species of this
genus lack a distinct, upturned caudal spine on the pre-anal ring, and the gonopods of Obelostreptus resemble those of Spirostreptidae more closely. Examination of illustrations kindly made available by Dr Van den Spiegel, has shown that species of this genus lack a distinct, upturned caudal spine on the pre-anal ring, and the gonopods of
Obelostreptus resemble those of Spirostreptidae more closely."