What is "marsupenaeus"

Marsupenaeus japonicus, known as the kuruma shrimp, kuruma prawn, or Japanese tiger prawn, is a species of prawn. It occurs naturally in bays and seas of the Indo-West Pacific, but has also reached the Mediterranean Sea as a Lessepsian migrant. It is one of the largest species of prawns, and is accordingly one of the most economically important species in the family.