Campylaspis marinescui, 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 : 19-20

Campylaspis marinescui sp. nov.

Fig. 21

Holotype subadult ♀, 5.25 mm, P.88231, Australia, NSW, north-east of Eden , -37.0033° 150.335°, 250–300 m, Waren dredge, shelly bryozoan sand, 11 Dec 1986, P.A. Hutchings, W.F. Ponder, R. T. Springthorpe, RV Franklin, FR 1086-05, in AM . Paratypes: 1♀, 1♂, P.88234; 1♂, MGAB CUM 1657 ; 1♂, P.88233; 2♀♀, 5♂♂, P.88232; 1♀ (diss.), MGAB CUM 1656 .

Etymology. The species is dedicated to Alexandru Marinescu, distinguished specialist in exhibitions and history of science, from the “Grigore Antipa” Museum, as a sign of high gratitude and respect for his brilliant work he done in the museum, with the occasion of his anniversary of 70 years.

Diagnosis. Carapace 0.47 body length, with rows of tubercles of various sizes; 1 pair of tubercles on basis of frontal lobe; pleonite 5 with 1 dorsal, 1 ventral and 1 pair of lateral teeth; maxilliped 2 propodal seta little longer than dactylar teeth; pereopod 2 dactylus with usual tip; uropodal peduncle 2.25 pleonite 6 length, 1.6 endopod length; exopod 0.9 endopod length; endopod with 4 microserrate setae.

Description. Carapace 0.47 body length, covered with longitudinal rows of large and smaller tubercles; 2 longer than high, with 1 spine on ocular lobe, 1 pair of large tubercles at basis of frontal lobe; antennal notch present; small ocular lobe, eyeless pseudorostral lobes 0.21 carapace length, meeting in front of ocular lobe ( Fig. 21 A, B ). — Pereonite 1 almost covered by carapace ( Fig. 21 A ). — Pleonite 5 with 1 dorsal, 1 ventral and 1 pair of lateral teeth. — Antenna 1 peduncle article 1 0.5 rest of article’s length; article 2 1.2 article 3 length; main flagellum 1.8 article 3 length, with 3 articles; accessory flagellum with 1 article; aesthetascs 0.8 main flagellum length ( Fig. 21 C ). — Maxilliped 2 basis fused with ischium, with 1 plumose seta; merus with 1 plumose seta; carpus with 1 simple seta and 1 short tooth; propodus, with 1 short tooth and 1 simple seta, little longer than short dactylar teeth ( Fig. 21 D ). — Maxilliped 3 basis 1.2 rest of article’s length, with 4 plumose setae; merus, with 1 process and 1 plumose, 1 simple seta and 1 tooth; carpus 0.7 propodus length, with 1 plumose, 4 simple setae and 3 teeth; propodus 2 dactylus length, with 1 plumose and 2 pappose setae; dactylus 0.4 propodus length, with 4 simple setae; with exopod ( Fig. 21 E ). — Pereopod 1 basis 0.9 rest of article’s length, short serration medially, 2 plumose setae; ischium with 1 plumose seta and 1 tooth; merus 2.4 ischium length, with 1 simple and 3 pappose setae, 1 short tooth; carpus as long as propodus, with 5 simple setae; propodus 1.2 dactylus length, with 1 plumose and 6 simple setae; dactylus with 4 simple setae; with exopod ( Fig. 21 F ). — Pereopod 2 basis 0.47 rest of article’s length, serrate margins, with 3 simple setae; merus 4.3 ischium length, with 3 simple setae; carpus 2 merus length, with 1 short robust and 4 simple setae; propodus with 1 simple seta; dactylus 5.2 propodus length, with 6 simple and 4 plumose setae, normal tip; with exopod ( Fig. 21 G ). — Pereopods 3–5 with decreasing basis and increasing carpus; with simple long setae; dactylus fused with terminal seta ( Fig. 21 H–J ). — Uropod 2.25 pleonite 6 length, 1.6 endopod length, with serrate margins; exopod 0.9 endopod length, with 1 long simple seta; endopod with 1 simple, 4 medial microserrate and 1 terminal serrate seta, shorter than in exopod ( Fig. 21 K ).

Remarks. Campylaspis marinescui sp. nov. is related to C. heardi sp. nov., both species without lateral a sulcus and with carapace covered with numerous tubercles. It differs in: carapace with tubercles without spines; maxilliped 3 with merus shorter than in C. heardi , with fewer teeth; carpus shorter than merus vs. longer; propodus as long as carpus vs. shorter; uropod with shorter peduncle, endopod with 4 vs. 2 medial setae.

Distribution. Australia: NSW—northeast of Eden, east of Broken Bay, of Terrigal, and of Long Reef, at 250–914 m depth.

Figures

Figure 21. Campylaspis marinescui 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, B 1 mm; C, D 0.2 mm; E–K 0.3 mm.