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Species of Stigmatoteuthis are distinctive in having very long arms relative to the ML and paired secondary reproductive organs (penis, spermatophore gland complex, Needham's sac). Damaged individuals of Stigmatoteuthis can often be recognized by the sawtooth arrangement of photophores in the Basal Series of the head. At present differences between Atlantic and Indo-Pacific species are poorly defined and depend on mature males. Identification, therefore, rests primarily on location of capture.
A Stigmatoteuthis ...
- with a tropical Indo-Pacific habitat.