Schizocuma, Bacescu, 1972

Petrescu, Iorgu, 2018, On the Family Nannastacidae (Crustacea, Cumacea) from the Australian Museum Collection, Records of the Australian Museum 70 (1), pp. 1-111 : 42

Key to species of Schizocuma from Australian waters

1 Carapace, pereon and pleon with dorsal spines ......................................................................... 2

—— Carapace with dorsal spines, missing from pereon and pleon .................................................. 6

2 Carapace to pleon with serrate dorsal carina ..................................... S. calmani Stebbing, 1912

—— Carapace with or without dorsal carina, pereon and pleon without .......................................... 3

3 Carapace with dorsal carina ...................................................................................................... 4

—— Carapace without dorsal carina .................................................................... S. bacescui sp. nov.

4 Carapace with more than 10 dorsal spines ........................................ S. spinosum ( Jones, 1984)

—— Carapace less than 10 dorsal spines .......................................................................................... 5

5 Carapace with spines on ocular lobe and posterior extremity ......... S. molossa (Zimmer, 1907)

—— Carapace with spines only on ocular lobe ................................... S. spinoculatum ( Jones, 1984)

6 Uropodal peduncle more than 2 endopod length ................................... S. vemae Băcescu, 1972

—— Uropodal peduncle less than 2 endopod length .............................................. S. antipai sp. nov. setae; with exopod ( Fig. 47 D ). — Pereopod 1 basis 0.3 rest of article’s length, with 2 simple setae; ischium with 1 simple seta; merus 2.3 ischium length, with 1 simple seta; carpus 2 merus length, with 4 setae; propodus 1.06 carpus length, with 5 setae; dactylus 0.3 propodus length, with 3 simple setae; with exopod ( Fig. 47 E ). — Pereopod 2 basis 0.5 rest of article’s length, with 1 simple seta; merus 0.3 ischium length, with 1 simple seta; carpus 1.5 merus length, with 2 simple setae; dactylus 2.5 propodus length, with simple setae; with exopod ( Fig. 47 F ). — Pereopod 3 basis 0.5 rest of article’s length; carpus 3 merus length; propodus 0.3 carpus length; dactylus fused with terminal long seta ( Fig. 47 G ). — Pereopod 4 basis 0.5 rest of article’s length; merus 1.6 ischium length; carpus 2.1 merus length; propodus 0.4 carpus length; dactylus fused with terminal long seta ( Fig. 47 H ). — Pereopod 5 basis longer than half of pereopod, carpus 2.2 merus length, dactylus fused with terminal seta ( Fig. 47 I ). — Uropod peduncle 4.1 pleonite 6 length, 1.8 endopod length; exopod as long as endopod, 2 long setae on both margins, long simple terminal seta; endopod with 3 long simple setae medially and 1 long terminal simple seta ( Fig. 47 J ).

Figures

Figure 47. Schizocuma antipai sp. nov. Holotype female (A) body, lateral view; (B) antenna 1; (C) antenna 1, detail; (D) maxilliped 3; (E) pereopod 1; (F) pereopod 2; (G) pereopod 3; (H) pereopod 4; (I) pereopod 5; (J) uropod. Scales: A 0.5 mm; B,D,I 0.3 mm; C 0.1 mm; J 0.3 mm.