Campylaspis oanalexandru, 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 : 22-23

Campylaspis oanalexandru sp. nov.

Fig. 25

Holotype postmanca ♂, 3.57 mm, P.88252, 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. Springthorpe, RV Franklin, FR 1086-05, in AM.

Etymology. The species is dedicated to Oana and Alexandru Iftime, my colleagues and friends, my benefactors, as a sign of gratitude for their friendship and they showed me during my difficult period of 2005.

Diagnosis. Carapace 0.4 body length, with 1 acute dorsal tubercle; maxilliped 2 propodus with 1 tooth, with seta as long as dactylar teeth; pereopod 2 dactylus 3.4 propodus length, with digitiform tip; uropodal peduncle 1.5 pleonite 6 length, 1.03 endopod length, endopod 1.1 exopod length, with 2 setae medially.

Description. Carapace 0.4 body length, 2 longer than high; pseudorostrum 0.29 carapace length; without ocular lobe; frontal lobe with 1 dorsal and 1 lateral tubercle; anterolateral corner with 1 strong tooth; deep antennal notch ( Fig. 25 A ). — Antenna 1 peduncle article 1 as long as rest of article’s length, with 1 tooth; article 2 as long as article 3; main flagellum 1.5 peduncle article 3 length; accessory flagellum with 1 article; aesthetascs 0.8 main flagellum length ( Fig. 25 B ). — Maxilliped 2 basis fused with ischium, with 1 plumose seta; merus with 1 plumose seta; carpus 3.3 merus length, with 2 simple seta and 1 tooth; propodus 1.4 carpus length, with 1 tooth and 1 simple seta as long as dactylar teeth ( Fig. 25 C ). — Maxilliped 3 basis 0.4 maxilliped length, with 3 plumose setae; ischium with 1 robust tooth; ischium to dactylus with serrate margins; merus 3.1 ischium length, with 2 plumose setae; carpus as long as propodus, propodus with 1 strong medial tooth; with exopod ( Fig. 25 D ). — Pereopod 1 basis 0.4 pereopod length, with 3 plumose setae; ischium to dactylus with serrate margins; merus 2.7 ischium length, with 2 plumose setae; carpus 0.4 merus length, with 1 simple and 2 plumose setae; propodus 1.1 carpus length, with 1 plumose and 3 pappose setae; dactylus 0.7 propodus length, with 4 simple setae; with exopod ( Fig. 25 E ). — Pereopod 2 basis 0.4 rest of article’s length; merus 7.5 ischium length, with 1 plumose seta; carpus 1.4 merus length, with 1 long simple seta; dactylus 3.4 propodus length, with 2 simple setae and digitiform tip; with exopod; with exopod ( Fig. 25 F ). — Pereopods 3, 4 with decreasing basis and increasing carpus length; dactylus fused with terminal seta; with exopods ( Fig. 25 G, H ). — Uropod peduncle 1.5 pleonite 6 length, 1.03 endopod length, with serrate margins; exopod 0.8 endopod length, with 2 simple setae; endopod with 2 simple setae medially, long terminal simple seta ( Fig. 25 I ).

Remarks. Campylaspis oanalexandru sp. nov. is related to C. panai sp. nov., both without the lateral sulcus on the carapace, and with a digitiform tip on the dactylus of pereopod 2. It differs with: carapace smooth except for one pair of anterior tubercles vs. several tubercles in C. panai ; stronger anterolateral tooth on carapace; maxilliped 3 with slender merus; pereopod 1 with fewer setae in C. oanalexandru , pereopod 2 with dactylus 3.4 propodus in C. oalaexandru vs. 2.9 in C. panai ; uropod with shorter peduncle and longer rami, 2 setae on endopod in C. oanalexandru vs. 3 setae in C. panai .

Distribution. Australia: NSW—northeast of Eden, at 250–300 m depth.

Figures

Figure 25.Campylaspis oanalexandru sp. nov.Holotype postmanca (A) body, lateral view; (B) antenna 1; (C) maxilliped 2; (D) maxilliped 3; (E) pereopod 1; (F) pereopod 2; (G) pereopod 3; (H) pereopod 4; (I) uropod. Scales: A 1 mm; B 0.3 mm; C 0.2 mm; D 0.3 mm; E–H 0.3 mm.