Campylaspis stanae, 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 : 28

Campylaspis stanae sp. nov.

Fig. 34

Holotype subadult ♀, 7.33 mm, P.88237, Australia, NSW, north-east of Eden , -37.00° 150.34°, 250–300 m, Waren dredge, shelly bryozoan sand, 11 Dec 1986, P.A. Hutchings, W.F. Ponder, R. T. Springthrpe, RV Franklin, FR 1086-05, in AM . Paratype 1♀, P.64658.

Etymology. The species is dedicated to my colleague Dr Melanya Stan, specialist in Coleoptera Staphilinidae , as a sign of deep appreciation of her work.

Diagnosis. Carapace, 0.4 body length, 1 sulcus all around carapace; pereopod 2 basis 0.55 rest of article’s length, dactylus 4.5 propodus length, with digitiform tip; uropodal peduncle 2.5 pleonite 6 length, 2.28 exopod length; equal rami.

Description. Carapace 0.4 rest of body length, 1.45 as long as high, with 1 sulcus all around carapace; large siphon; antennal notch scarcely marked; serrated anteroventral margin; small ocular lobe, without lenses; frontal lobe, small; pseudorostrum 0.25 body length ( Fig. 34 A, B ). — Antenna 1 peduncle article 1 as long as article 2, 0.66 rest of article’s length; article 2 1.25 article 3 length; main flagellum broken, accessory one with 1 article ( Fig. 34 C ). — Maxilliped 2 basis fused with ischium, with 1 plumose seta; merus with 1 plumose seta; carpus 2.4 merus length, with 1 simple seta; propodus 2 carpus length, with 1 short spine and 2 simple setae. — Maxilliped 3 basis 1.06 rest of article’s length, short serrated medially, 3 plumose and 2 pappose setae; basis to propodus with serrate margins; merus 3.7 ischium length, with 6 simple and 1 pappose seta; carpus 0.46 merus length, 3 simple and 1 pappose seta; propodus 1.06 carpus length, 3 pappose setae; dactylus 0.59 propodus length, with 3 simple setae, terminal seta 4 dactylus length; with exopod ( Fig. 34 D ). — Pereopod 1 basis 0.83 rest of article’s length, 1 plumose seta on medial margin, with 1 simple and 1 plumose seta; ischium with 1 plumose seta; merus 1.5 ischium length, 3 simple and 5 plumose setae; carpus 0.9 merus length, with 6 simple and 2 plumose setae; propodus 0.9 carpus length, with 7 simple setae; dactylus 0.58 propodus length, with 7 simple setae; with exopod ( Fig. 34 E ). — Pereopod 2, basis 0.55 rest of article’s length, 1 pappose seta on medial margin, 1 simple one on outer margin, merus 3.33 ischium length, 1 simple and 1 pappose on medial margin, 1 simple seta on outer margin, carpus twice as merus length, 2 pappose setae on medial margin, 2 pappose and 1 simple on outer margin, propodus 0.5 carpus length, dactylus 4.5 propodus length, 2 pappose setae and 3 simple ones on medial margin, 2 simple setulae and 1 plumose one on outer margin, tip of dactylus little downwardly bent; with exopod ( Fig. 34 E ). — Pereopod 3 basis 1.8 rest of article’s length; ischium with 1 plumose seta; merus 1.2 ischium length, with 1 pappose seta; carpus 2.3 merus length; propodus 0.4 carpus length, with 2 annulate setae; dactylus fused with terminal robust long seta ( Fig. 34 F ). — Pereopod 4 basis 0.8 rest of article’s length; ischium 0.17 with 1 plumose seta; merus 1.8 ischium length, with 1 plumose seta; carpus 1.66 merus length, 1 simple and 1 annulate setae; propodus 0.3 carpus length, with 1 annulate seta; dactylus as long as propodus, fused with terminal simple seta ( Fig. 34 G ). — Pereopod 5 basis 0.72 rest of article’s length; ischium with 1 simple seta; merus 2.5 ischium length, with 1 simple seta; carpus 1.3 merus length; propodus 0.33 carpus length; dactylus as long as propodus, with 1 long simple seta ( Fig. 34 H ). — Uropod peduncle 2.5 pleonite 6 length, 2.28 exopod length; equal rami; exopod with 2 simple and 1 terminal microserrate seta; endopod with 2 simple and 5 microserrate setae ( Fig. 34 I ).

Remarks. Campylaspis stanae sp. nov. has a large circular sulcus as in C. lowryi sp. nov. and C. radui sp. nov. It differs from C. lowryi in having maxilliped 3 with a longer merus; Campylaspis stanae has a longer maxilliped 3 merus than C. radui sp. nov., with the pereopod 2 dactylus with a pedunculate tip vs. normal dactylus in C. radui ; C. stanae has two simple and five microserrate setae vs. five simple setae in C. radui .

Distribution. Australia: NSW—east of Newcastle, and northeast of Eden, at 250–2698 m depth.

Figures

Figure 34. Campylaspis stanae sp. nov. Holotype female (A) body, lateral view; (B) antenna 1; (C) maxilliped 3; (D) pereopod 1; (E) pereopod 2; (F) pereopod 2, detail of dactylus; (G) pereopod 3; (H) pereopod 4; (I) pereopod 5; (J) uropod. Scales: A 1 mm; B,F 0.25; C,G–J 0.5 mm; D,E 1 mm.