Campylaspis dumitrumurariui, 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 : 12

Campylaspis dumitrumurariui sp. nov.

Fig. 8

Holotype adult ♂, 4.74 mm, P.88260, Australia, NSW, northeast of Long Reef , -33.7° 151.9°, 466 m, 19 Dec 1985, FRV Kapala , K85-21-06, in AM.

Etymology. The species is dedicated to Dr Dumitru Murariu, corresponding member of Romanian Academy, former General Director of the “Grigore Antipa” National Museum of natural History, world specialist in Mammals (bats), as a sign of highly gratitude and appreciation.

Diagnosis. Carapace with long lateral sulcus; eyeless ocular lobe; pereopod 2 dactylus 2.5 propodus length, with 1 long simple terminal seta; uropod peduncle 3 pleonite 6 length, 1.9 endopod length.

Description. Carapace 0.41 of entire body length, depressed carapace, 2.14 as long as high, 1.6 as long as wide, long lateral sulcus, 0.83 carapace length, short transverse ridge on its anterior part; pseudrostrum 0.23 entire carapace, small ocular lobe without visual elements, anterior margin little excavated ( Fig. 8 A, B ). — Antenna 1 basal article as long as the rest of articles combined, aesthetascs 2 main flagellum length, accessory flagellum with 1 article ( Fig. 8 C ). — Maxilliped 3 basis 1.45 rest of article’s length, 1 plumose seta on medial margin, 2 long pappose setae on lateral margin; ischium and merus with a tooth on medial margin, 1 pappose seta on lateral margin; carpus 0.88 merus length, with 4 pappose setae; propodus 0.8 carpus length, 3 pappose setae on medial margin, 1 seta on lateral margin; dactylus 0.5 propodus length, 1 long terminal simple robust seta; with exopod ( Fig. 8 D ). — Pereopod 1 basis 1.23 rest of article’s length, 2 plumose setae on medial, 1 seta on lateral margin; merus 3.6 ischium length, with 5 simple on medial margin and 1 plumose seta on lateral margin; carpus 0.9 merus length, 5 simple on medial and 2 plumose setae on lateral margin; propodus 0.75 carpus length, 2 simple on medial margin and 3 plumose setae on distal margin; dactylus 0.66 propodus length, 3 simple terminal short setae; with exopod ( Fig. 8 E ). — Pereopod 2 basis 0.9 rest of article’s length; merus 2.1 ischium length; carpus 1.9 merus length, with 7 simple setae; dactylus 2.5 propodus length, with 11 simple setae; with exopod ( Fig. 8 F ). — Pereopod 3 basis 2 rest of article’s length, with 1 simple seta; ischium with 1 simple seta; merus 1.4 ischium length, with 1 simple seta; carpus 1.8 merus length, with 1 simple and 1 annulate seta; propodus 0.4 carpus length, with 1 annulate seta; dactylus fused with 1 terminal long robust seta; with exopod ( Fig. 8 G ). — Pereopod 4 basis 1.17 rest of article’s length; ischium 0.1 basis length, with 1 simple seta; merus 1.6 ischium length, with 1 simple seta; carpus 2.8 merus length, with 2 simple setae; propodus 0.3 carpus length; dactylus fused with terminal simple seta; with exopod ( Fig. 8 H ). — Pereopod 5 basis 0.47 rest of articles combined, with 2 simple setae; ischium with 1 plumose seta; merus 1.5 ischium length, with 1 plumose and 1 simple seta; carpus 2.3 merus length, with 1 simple and 1 annulate seta; propodus 0.28 carpus length, with 1 annulate seta; dactylus fused with long terminal simple seta ( Fig. 8 I ). — Uropod peduncle serrate, 3 pleonite 6 length, 1.9 endopod length, with 5 plumose and 3 simple setae; exopod 0.88 endopod length, with 4 simple setae; endopod with 2 simple and 8 microserrate setae ( Fig. 8 J ).

Remarks. Campylaspis dumitrumurariui sp. nov. resembles C. edenensis Petrescu, 2006 and C. gherasimi sp. nov. by having a lateral sulcus with a transverse ridge on the anterior part. It differs from C. edenensis in: little shorter sulcus, shorter merus of maxilliped 3, pereopod 2 dactylus without a digitiform tip and a longer uropod with more setae on its endopod. Campylaspis dumitrumurariui differs from C. gherasimi in: smaller carapace, maxilliped 3 merus and carpus shorter and slender, pereopod 1 with longer basis and shorter rest of articles, dactylus of pereopod 2 with simple lateral setae versus plumose ones, longer uropod with more setae on endopod, 9 vs. 6.

Distribution. Australia: NSW—north east of Long Reef, at 466 m depth.

Figures

Figure 8. Campylaspis dumitrumurariui sp. nov. Holotype male (A) body, lateral view; (B) carapace, dorsal view; (C) antenna 1; (D) maxilliped 3; (E) pereopod 1; (F) pereopod 2; (G) pereopod 3; (H) pereopod 4; (I) pereopod 5; (J) uropod. Scales: A,B 1 mm; C,I 0.5 mm; D 0.5 mm; E 0.5 mm; F 0.5 mm; G 0.25 mm; H 0.5 mm; J 0.5 mm.