Campylaspis heardi, 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 : 16-17

Campylaspis heardi sp. nov.

Figs 16 , 17

Holotype subadult ♀, 8.75 mm, P.64736, Australia, NSW, east of Broken Bay , -33.62° 152.07°, 896–923 m, dredge, 10 Dec 1980, R. T. Springthorpe, FRV Kapala , K80-20-09, in AM . Paratypes: 1♂, P.88222; 1♀, P.88221; 1♀ (diss.) MGAB CUM 1653 ; 1♂ (diss.) MGAB CUM 1654 , all same data as holotype ; 1♂, P.88223.

Etymology. The species is dedicated to Dr Richard W. Heard Jr, specialist in Peracarida (Gulf Coast Research Laboratory, Department of Coastal Sciences, University of Southern Mississippi, U.S.A.), as a sign of gratitude for his generous help and friendship he offered to me in the right moment.

Diagnosis. Carapace 0.46 body length, densely spiny, with 1 pair of acute tubercles at basis of frontal lobe; pleonites with spines; maxilliped 2 propodal seta longer than dactylar teeth; pereopod 2 dactylus 3.2 propodus length, with terminal seta; uropod peduncle 2.9 pleonite 6, 2.7 endopod length, 2 longitudinal serrate crests; exopod 0.7 of endopod length; endopod with 3 simple setae in female and 8 simple setae in male.

Description of female. Carapace 0.5 body length, 1.9 as long as high, densely spiny integument with a pair of acute tubercles at basis of frontal lobe, notch present; small ocular lobe, eyeless; pseudorostral lobes meeting in front of ocular lobe, 0.3 carapace length ( Fig. 16 A, B ). — Pereonite 1 almost covered by carapace. Spiny pleonites. — Antenna 1 peduncle with serrate margins, article 1 0.6 rest of article’s length; article 3 1.1 article 2 length; main flagellum 0.8 article 3 length, with 3 articles; accessory flagellum with 2 articles; aesthetascs 0.8 main flagellum length ( Fig. 16 C ). — Maxilliped 2 basis fused with ischium, longer than rest of article’s length, with 2 plumose setae; propodus, 2nd longest article, with 1 protuberance medially with 1 seta simple longer than dactylar 3 teeth ( Fig. 16 D ). — Maxilliped 3 basis 0.9 rest of article’s length, with 5 plumose setae; merus 6 ischium length, with 2 strong teeth and 1 plumose seta; carpus 1.45 merus length, with 8 robust interspersed with smaller teeth medially, serrate laterally, with 1 simple and 1 plumose seta; propodus 0.4 carpus length, with 2 robust teeth and 2 pappose setae; dactylus 0.5 propodus length, with 3 simple setae; with exopod ( Fig. 16 E ). — Pereopod 1 basis 0.9 rest of article’s length, with 7 plumose setae; merus 1.6 ischium length, with 1 plumose seta; carpus 1.25 merus length, strongly serrate medially, with 1 simple and 8 plumose setae; propodus 0.3 carpus length, with 6 plumose setae; dactylus 0.8 propodus length, with 6 long simple setae; with exopod ( Fig. 16 F ). — Pereopod 2 basis 0.3 pereopod length, with 2 plumose setae; merus 7.5 ischium length, with 1 plumose and 2 simple setae; carpus 1.4 merus length, with 1 tooth and 4 plumose setae; dactylus 3.2 propodus length, with 7 plumose and 3 simple setae; with exopod ( Fig. 16 G ). — Pereopods 3 and 4 with decreasing basis and increasing carpus, pereopod 5 with shorter carpus; dactylus with 1 simple terminal seta ( Fig. 16 H-J). — Uropod peduncle 2.3 pleonite 6 length, 2.6 endopod length, with serrate margins, median longitudinal serrate crest; exopod 0.8 endopod length, serrate margins, terminal stout simple seta; endopod with serrate margins, 2 medial setae and 1 terminal, longer, seta ( Fig. 16 K ).

Description of male. Body length 9.75 mm. — Carapace 2 longer than high; serrate anterolateral margin ( Fig. 17 A ). — Pereonites 3–5 with dorsal spines and pereonites 2-5 with dorsal setae. — Pleonites 1–3 with dorsal spines, each pleonite with dorsal setae. — Antenna 1 peduncle article 1 1.3 rest article’s length; main flagellum with 4 articles accessory flagellum with 2 articles; aesthetascs 1.4 main flagellum length ( Fig. 17 B, C ). — Maxilliped 3 basis, 0.5 maxilliped length, with 6 simple short setae medially, 2 pappose and 2 plumose setae, serrate medially; ischium with 1 tooth and 2 plumose setae; merus 1.8 ischium length, with 2 large teeth and 2 plumose setae; carpus 1.6 merus length, with 4 spines medially; propodus 0.2 carpus length, with extremities longer than dactylus; with exopod ( Fig. 17 D, E ). — Pereopod 1 basis 1.1 rest of article’s length, with 6 plumose setae; basis to propodus with serrate margins; merus 2.8 ischium length, with 1 plumose seta; carpus 1.25 merus length, with 6 plumose setae; propodus 0.5 carpus length, with 1 simple and 6 plumose setae; dactylus 0.9 propodus length, with 5 simple setae; with exopod ( Fig. 17 F ). — Pereopod 2 basis longer 0.5 pereopod length, with 1 plumose seta, numerous simple short setae on both margins; merus 4 ischium length, with 2 simple and 1 plumose seta; carpus 1.6 merus length, with 1 simple and 3 plumose setae; dactylus 4.3 propodus length, with 7 simple and 3 plumose setae; with exopod ( Fig. 17 G ). — Pereopods 3–5 decreasing basia and increasing carpus, with simple and plumose setae; dactylus fused with terminal seta; pereopods 3, 4 with exopods ( Fig. 17 H–J ). — Uropod peduncle 2.9 pleonite 6 length, 2.7 endopod length, serrate margins, 2 median longitudinal serrate crests, 7 simple and 6 microserrate setae; exopod 0.7 endopod length, with serrate margins, with 2 simple setae; endopod with longitudinal serrate crest, with 7 simple and 1 terminal simple seta ( Fig. 17 K ).

Remarks. Campylaspis heardi sp. nov. has no lateral sulcus as in C. longidentata Petrescu, 2006 and C. serrata Petrescu, 2006 . Campylaspis heardi sp. nov. differs from C. longidentata mainly by: carapace without pits, maxilliped 2 with much shorter teeth, dactylus without digitiform tip, uropod with exopod shorter than endopod. It differs from C. serrata by: tiny spines instead of club-like setae and pits, small ocular lobe, maxilliped 3 with larger articles with strong serration vs. short serration; uropod with shorter exopod than endopod, peduncle with longitudinal crest vs. peduncle without crest.

Distribution. Australia: NSW—east of Broken Bay, at 896–923 m depth.

Figures

Figure 16. Campylaspis heardi sp. nov. Paratype 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 0.3 mm; D–G 1 mm; H–J 1 mm.

Figure 17. Campylaspis heardi sp. nov. Paratype male (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 1 mm; B 0.3 mm; C 0.2 mm; D, E 1 mm; F–J 1 mm.