Campylaspis radui, Petrescu, 2018

Petrescu, Iorgu, 2018, On the Family Nannastacidae (Crustacea, Cumacea) from the Australian Museum Collection, Records of the Australian Museum 70 (1), pp. 1-111 : 25-26

Campylaspis radui sp. nov.

Fig. 31

Holotype subadult ♀, 4.80 mm, P.88244, Australia, NSW, north-east of Port Jackson , -33.68° 152°, 820–888 m, beam trawl, 11 Feb 1986, R. T. Springthorpe, FRV Kapala , K86- 01-07, in AM . Paratypes: 1♀, P.88245; 1♀, P.64754.

Etymology. The species is dedicated to the memory of my father, Radu Petrescu, brilliant Romanian writer (1927– 1982), as a sign of eternal love and high respect for his moral qualities, for all he offered to his son.

Diagnosis. Carapace 0.48 entire body length, lateral sulcus all around carapace, bordered dorsally by a robust ridge and ventrally by a narrow ridge, 1 pair of small tubercles on basis of frontal lobe; propodus of 2nd maxilliped with 1 medial seta as long as dactylar teeth; dactylus of 2nd pereopod with terminal seta; uropodal peduncle 2.1 pleonite 6 length, 1.9 endopod length; exopod 0.85 endopod length; endopod with 4 simple setae medially.

Description. Carapace 0.48 body length, 1.8 as long as high, long lateral sulcus all around carapace, bordered dorsally by a robust ridge and ventrally by a narrow ridge; pseudorostrum lobes meeting in front of eyeless, short, ocular lobe; 1 pair of small tubercles on basis of frontal lobe; small notch; smooth anterolateral margin ( Fig. 31 A, B ). — Antenna 1 peduncle article 1 as long as rest of article’s length; article 2 1.4 article 3 length; main flagellum with 3 articles; accessory flagellum with 1 article; aesthetascs 1.6 main flagellum length ( Fig. 31 C ). — Maxilliped 2 basis fused with ischium, basis and merus with 1 simple and 1 plumose seta; merus with 1 plumose seta; carpus 0.9 merus length, with 1 tooth and 2 simple setae; propodus 1.6, with seta as long as dactylar central teeth ( Fig. 31 D ). — Maxilliped 3 basis 0.5 maxilliped length, with 4 plumose setae; merus 1.55 ischium length, with 1 simple and 2 plumose setae; carpus 1.2 merus length, with 2 simple and 2 plumose setae; propodus as long as carpus, with 3 plumose setae; dactylus 0.5 propodus length, with 4 simple terminal setae; with exopod ( Fig. 31 E ). — Pereopod 1 basis 1.1 rest of article’s length, basis to carpus with serrate margins, with 1 simple and 3 plumose setae; ischium with 1 plumose seta; merus 2 ischium length, with 5 simple and 3 plumose setae; carpus 1.1 merus length, with 4 simple and 3 plumose setae; propodus 0.7 carpus length, with 4 simple and 2 plumose setae; dactylus 0.8 propodus length, with 4 simple setae; with exopod ( Fig. 31 F ). — Pereopod 2 basis 0.6 rest of article’s length; merus 0.3 ischium length, with 1 simple seta; carpus 2.5 merus length, with 4 simple setae; dactylus 4 propodus length, with 9 simple setae, straight acute tip; with exopod ( Fig. 31 G ). — Pereopod 3 basis 1.3 rest of article’s length, with 1 simple seta; ischium with 1 simple seta; merus 1.5 ischium length, with 1 simple seta; carpus 2.3 merus length, with 1 annulate seta; propodus 0.3 carpus length, with 1 annulate seta; dactylus 0.6 propodus length, with 2 simple setae ( Fig. 31 H ). — Pereopod 4 basis 1.2 rest of article’s length, with 1 simple seta; ischium with 1 simple seta; merus 1.1 ischium length, with 1 plumose seta; carpus 2.5 merus length, with 1 plumose and 1 annulate seta; propodus 0.26 carpus length, with 1 annulate seta; dactylus 0.5 propodus length, with 2 simple setae ( Fig. 31 I ). — Pereopod 5 basis 0.66 rest of articles combined length, with 2 simple setae; ischium with 1 simple seta; merus 1.4 ischium length, with 1 plumose seta; carpus 1.8 merus length, 1 simple, 1 plumose and 1 annulate seta; propodus 0.4 carpus length, with 1 annulate seta; dactylus 0.4 propodus length, with 2 simple setae ( Fig. 31 J ). — Uropod peduncle 2.1 pleonite 6 length, 1.9 endopod length, serrated medially; exopod 0.9 endopod length, with 3 simple setae; endopod with 5 simple and 1 terminal simple seta ( Fig. 31 K ).

Remarks. Campylaspis radui sp. nov. is similar to other species: C. pumila Gamô, 1960 from Japan, C. thetidis Hale, 1945 , C. latimera Petrescu, 2006 , C. rectangulata Petrescu, 2006 and C. sculpta Petrescu, 2006 and C. lowryi sp. nov. from Australia ( Table 2).

Distribution. Australia: NSW—northeast of Port Jackson, at 820 m depth.

Figures

Figure 31. Campylaspis radui sp. nov. Holotype female (A) body, lateral view; (B) carapace, dorsal view;(C) antenna 1; (D) maxilliped 2; (E) maxilliped 3; (F) pereopod 1; (G) pereopod 2; (H) pereopod 3; (I) pereopod 4; (J) pereopod 5; (K) uropod. Scales: A 1 mm; B 1 mm; C,E–K 0.3 mm; D 0.3 mm.