Styloptocuma Băcescu and Muradian, 1974

Styloptocuma Băcescu and Muradian, 1974: 74 .— Băcescu, 1992: 262.— Petrescu and Watling, 1999: 306.

Americuma Watling, 1991a: 580–581 .

Cumella (Styloptocuma) .— Watling, 1991b: 752.

Type species. Styloptocuma antipai Băcescu and Muradian, 1974 .

Remarks. Styloptocuma is characterised by pseudorostral lobes reaching the extremity of the ocular lobe, the ocular lobe without visual elements, and uropods with long peduncles, twice or even longer than pleonite 6. The genus has not previously been recorded from Australia.

Key to species of Styloptocuma from Australian waters (females only)

1. Carapace dorsally and ventrally serrated 2

— Carapace without serration 4

2. Carapace only with ventral serration S. granulosum sp. nov.

— Carapace with dorsal and ventral serration 3

3. Carapace with a lateral serrated row S. spinosum sp. nov.

— Carapace without lateral serrated row S. poorei sp. nov.

4. Dactylus of pereopod 2 twice as long as propodus S. australiense sp. nov.

— Dactylus of pereopod 2 quarter length of propodus S. nodosum sp. nov.