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Stoloteuthis leucoptera, the type and the best known species of the genus, is very common throughout the year in the Gulf of Maine, U.S.A., at depths of 175 to 340 m. Only a few specimens have been taken on the outer shelf and slope south of Cape Cod, although it is found as far south as the Straits of Florida. It has also been reported from the Eastern Atlantic. This species, which reaches 25 mm ML, can be distinguished easily from all other neritic sepiolids in the western North Atlantic by the large ventral shield of the mantle characteristic of all members of the Heteroteuthinae. Note the dramatic blue fringe to the shield in the title photograph and the silvery band of tissue around the mantle.
A Stoloteuthis with...
- Narrow head-mantle fusion.
- glandular structures on dorsal and ventral borders of arms I in males.