Campylaspis cursaruae, 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 : 11

Campylaspis cursaruae sp. nov.

Fig. 7 Holotype subadult ♀, 1.93 mm, P.64756, Tasman Sea, Lord

Howe Rise, -27.9832° 162.8592°, 1250 m, epibenthic sled, coarse sediment with pumice, 6 May 1989, J.K. Lowry & party, RV Franklin, FR 0589-28, in AM. Paratype 1♀ , P.88242, same data as holotype, in AM .

Etymology. The species is dedicated to my colleague, Ileana Cursaru, chief economist at the “Grigore Antipa” Museum, as a sign of sincere gratitude and friendship.

Diagnosis. Carapace 0.54 total body length; merus with 5 teeth; propodus with 4 teeth; pereopod 2 with a long digitiform tip; uropodal peduncle 3 pleonite 6 length, 2.1 endopod length; exopod 0.83 endopod length, endopod with 4 microserrate setae medially.

Description. Carapace 0.54 body length, 1.77 as long as high; short serration on anterior part of ventral margin; oblique, anterior margin; small antennal notch; pseudorostrum 0.27 carapace length; smooth integument ( Fig. 7 A ). — Antenna 1 peduncle article 1 0.6 rest of article’s length; article 2 0.3 article 3 length; main flagellum as long as peduncle article 3 length, accessory flagellum with 1 article; aesthetascs 3.2 main flagellum length ( Fig. 7 B ). — Maxilliped 3 basis 0.63 rest of article’s length, with 2 pappose setae; merus 3.2 ischium length, serrated, with 7 setae, 5 teeth and 1 pappose seta; merus to propodus with serrate margins; carpus 0.47 merus length, with 3 pappose setae; propodus 0.9 carpus length, with 3 pappose setae; dactylus 0.55 propodus length, with 3 simple setae; with exopod ( Fig. 7 C ). — Pereopod 1 basis 0.9 rest of article’s length, with 1 pappose and 2 plumose setae; ischium 0.1 basis length, with 1 pappose seta; merus 3.6 ischium length, with 2 simple and 5 pappose setae; carpus 0.7 merus length, with 5 pappose setae; propodus 1.05 carpus length, with 5 pappose setae; dactylus 0.4 propodus length, with 4 simple setae; with exopod ( Fig. 7 D ). — Pereopod 2 basis 0.49 rest of article’s length, with 1 pappose and 1 simple seta; merus 5.3 ischium length, with 1 pappose seta; carpus 2.9 merus length, with 1 pappose and 3 simple setae; dactylus 3.8 propodus length, with 9 simple setae and digitiform tip; with exopod ( Fig. 7 E ). — Pereopod 3 basis 1.36 rest of article’s length; merus 1.16 ischium length; merus with 1 simple seta; dactylus fused with terminal robust seta ( Fig. 7 F ). — Pereopod 4 basis 1.1 rest of article’s length; merus 2 ischium length, with 1 simple seta; carpus 2 merus length, with 2 simple setae; propodus 0.25 carpus length, with 1 simple seta; dactylus 0.8 propodus length, fused with terminal robust seta ( Fig. 7 G ). — Pereopod 5 basis 0.58 rest of article’s length; ischium with 1 seta; merus 2 ischium length, with 1 simple seta; carpus 2 merus length, with 1 annulate seta; propodus 0.25 carpus length, with 1 annulate seta; dactylus 0.5 propodus length, fused with terminal robust seta ( Fig. 7 H ). — Uropod peduncle 3 pleonite 6 length, strongly serrate medially, 2.1 endopod length; exopod 0.83 endopod length, with 3 simple setae medially and 1 terminal robust seta; endopod with 4 microserrate setae and 1 terminal microserrate robust seta ( Fig. 7 I ).

Remarks. The new species is closely related to C. popai sp. nov. in the smooth carapace, maxilliped 3 with serrate margins of merus to propodus, pereopod 2 dactylus with digitiform tip, pereopods 3–5 fuse with terminal seta. It differs with: longer carapace, antenna 1 peduncle with article 3 shorter, pereopod 1 with more robust articles, pereopod 2 with longer dactylus, uropod endopod with 4 microserrate setae vs. 7 in C. popai .

Distribution. Tasman Sea (between Australia and New Zealand), Lord Howe Rise, at 1250 m depth

Figures

Figure 7. Campylaspis cursaruae sp. nov. Holotype female (A) body, lateral view; (B) antenna 1; (C) maxilliped 3; (D) pereopod 1; (E) pereopod 2; (F) pereopod 3; (G) pereopod 4; (H) pereopod 5; (I) uropod. Scales: A 1 mm; B 0.2 mm; C–I 0.25 mm.