Abstract
The second larval stage of the trumped shrims Argis ochotensis kamtschatica (Crangonidae) from the plankton of the Avacha Gulf (northwestern part of the Pacific Ocean, Southeast Kamchatka) is described. The existing larvae with the older larvae of Argis ochotensis ochotensis and Argis dentata were carried out, previously described for sinking waters. The main distinguishing features of the senior Zoea of the Kamchatka subspecies A. ochotensis: the presence of spines in the terminal margins of the tergits; a different length of the spine of the right and left skale; three-segment exopod of antennules; nine setae in the basial endites of maxillule; relatively short flagellum of the antenna; a different number of anteroventral margin on the right and left side of carapas; a small notch on the terminal margim of telson. An assumption has been expressed that A. ochotensis is more widespread in Pacific waters than this was considered before. It is shown that this subspecies can have two or three stages of Zoea.
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