Penaeus (Penaeus) monodon
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Fifth pereopod without an exopod
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Hepatic carina straight, almost horizontal, distictly separated from base
of antennal carina
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Adrostral carina and groove extending as far as, or slightly ahead of apigastric
tooth
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Antennal carina very prominent, ending above middle of hepatic carina
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Gastro-orbital carina extending over posterior half, or less of distance
between hepatic spine and orbital margin
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Petasma with distomedian projection slightly overhanging distal margin
of costae
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Ventral costae generally unarmed, sometimes minutely serrate at tip
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Outer surface of lateral lobes generally unarmed
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Inner surface of lateral lobes armed with spinules
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Thelycum with lateral plates, their median margin sometimes forming tumid
lips
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Anterior process concave rounded distally
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Posterior process subtriangular, partly inserted between thelycal plates.
Copyright 1998 Bioinformatics Centre,
National Institute of Oceanography, Dona Paula, Goa, India