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Two new species of the genus Megokris (Decapoda, Penaeidae) from the Persian Gulf

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Two new penaeid shrimp, Megokris akademik sp. nov. and M. ghamrawyi sp. nov., are described from the Persian Gulf (= Arabian Gulf). These new species are most closely similar to M. granulosus (Haswell, 1879) from Darnley Island, Torres Strait, in the morphology of the thelycum, with an anterior median concavity, and in the petasma, with an anterolateral projection of an ox-horn shape, tapering at the tip, and directed forward. However, M. akademik and M. ghamrawyi differ from M. granulosus in the posterior margin of the anterior plate of the thelycum, which in the two new species is not fused with the posterior plate as it is in that latter species; also, in M. ghamrawyi the ventromedian process of the petasma has a rounded distal end, whereas in M. granulosus the petasma bears a triangular projection at the distal end of its ventromedian process. Zwei neue Arten von Penaeiden aus dem Persischen Golf, Megokris akademik sp. nov. und M. ghamrawyi sp. nov., werden beschrieben. Ihnen am ähnlichsten ist M. granulosus (Haswell, 1879) von Darnley Island in der Torres Straße wegen der vorderen mittleren Vertiefung am Thelycum und wegen eines nach vorn gerichteten, anterolateralen, spitz zulaufenden, hornähnlichen Vorsprungs am Petasma. M. akademik und M. ghamrawyi unterscheiden sich von M. granulosus dadurch, dass bei ihnen der Hinterrand der vorderen Platte des Thelycums nicht mit der hinteren Platte verschmolzen ist. Außerdem ist bei M. ghamrawyi der ventromediane Anhang des Petasmas distal gerundet, während er bei M. granulosus in einem dreieckigen Vorsprung endet.


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