Campylaspis elenaionuti Petrescu 2018, sp. nov.

• Main Author: Petrescu, Iorgu
• Format: Text
• Language: unknown
• Published: Zenodo 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Cumacea; Nannastacidae; Campylaspis; Campylaspis elenaionuti; Seta; Hale; Lowry; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.5281/zenodo.5237010; https://zenodo.org/record/5237010

Campylaspis elenaionuti sp. nov. Figs 9, 10 Holotype subadult ♀, 4.21 mm, P.88262, Tasman Sea, Lord Howe Rise, -27.9832° 162.8592°, 1250 m, epibenthic sled, coarse sediment with pumice, 6 May 1989, J.K. Lowry & party, RV Franklin , FR 0589-28, in AM. Paratypes : allotype ♂, P.88261; 1♀, P.88263, both same data as holotype. Etymology . The species is dedicated to my younger colleagues, Drs Ionuţ and Elena Iorgu, renown orthopteran specialists. Diagnosis . Carapace, depressed in lateral view, elongated; integument of carapace, pereon and pleon densely covered with small acute tubercles and pits; maxilliped 2 carpus with a big tooth medially dactylus with 3 dactylar teeth. Description of female . Carapace depressed in lateral view, 2.42 as long as high, 1.74 as long as wide; very small antennal notch; pseudorostrum, 0.32 carapace length, part of siphon exceeding carapace as long as pseudorostrum; pseudorostrum 0.3 carapace length; carapace integument, pereon and pleon densely covered with small acute tubercles and small pits (Fig. 9 A, B, C). — Antenna 1 peduncle with serrate margins, article 1 0.83 rest of article’s length, with 2 sensory setae, article 2 0.68 article 1, with 3 simple setae, article 3 with 1 small tooth; main flagellum 0.8 peduncle article 3, accessory flagellum with 1 article; aesthetascs as long as main flagellum (Fig. 9 D). — Maxilliped 1 basis with 3 pappose, 2 hook setae and 1 simple seta; carpus with 2 pappose and 6 simple setae; dactylus 0.2 carpus length, with hyaline fringe (Fig. 9 E). — Maxilliped 2 basis with 1 plumose long seta; merus 2 ischium length, short plumose seta; carpus 1.2 merus length, with 1 plumose and 1 strong tooth; propodus 0.75 carpus length, with 1 simple robust seta; dactylus with 3 dactylar teeth (Fig. 9 F). — Maxilliped 3 basis 0.64 rest of article’s length, with 5 pappose setae; ischium with 1 pappose seta; merus 5.33 ischium length, with 1 simple and 3 pappose setae, 2 teeth laterally; carpus 0.56 merus length, with 1 simple, 1 long plumose seta and 3 pappose setae, 3 strong teeth; propodus as long as carpus, with 2 pappose setae, 1 plumose seta and 3 teeth; dactylus 0.8 propodus length, terminal seta 1.41 dactylus length; with exopod (Fig. 9 G). — Pereopod 1 basis 0.7 rest of article’s length, 2 pappose and 2 simple short setae; ischium to propodus with serrate margins, 1 pappose seta; merus 2.35 ischium length, with 4 pappose and 2 simple setae; carpus 1.23 merus length, with 1 simple and 4 pappose setae; propodus 0.68 carpus length, with 1 simple seta and 6 pappose setae; dactylus 0.54 propodus length, with 4 simple and 2 pappose setae; with exopod (Fig. 9 H). — Pereopod 2 basis 0.6 rest of article’s length, with 1 simple and 2 pappose setae; ischium with 1 tooth; merus 2.4 ischium length, with 2 pappose setae; carpus 2.2 merus length, with 4 pappose setae; dactylus 2.77 propodus length, with 3 plumose, 3 pappose, 4 simple setae on lateral margin and 1 terminal plumose seta 0.8 dactylus length; with exopod (Fig. 9 I). — Pereopods 3–5 with decreasing basis and increasing carpus; dactylus fused with terminal robust long seta (Fig. 9 J-L). — Uropod peduncle 2.71 pleonite 6 length, 2.05 endopod length, serrate margins and medially; exopod 0.8 endopod length, with 1 simple and 2 microserrate setae; endopod with 3 simple and 2 microserrate setae (Fig. 9 M). Description of male . Body length 3.95 mm. — Carapace 0.45 body length, elongated, 2 as long as high, 2 posterior crests; pseudorostrum 0.34 carapace length, with serrate anterior margin; 0.5 of ventral margin serrate; eyeless ocular lobe (Fig. 10 A). — Pereonites 3–5 with mid-dorsal spines. — Pleonites 1–5 with mid-dorsal spines. — Antenna 1 basal article of peduncle 0.68 rest of article’s length, serrate medial margin of basal article and both margins of other 2 articles; main flagellum 1.29 apical article of peduncle length, short aesthetascs (Fig. 10 B). — Maxilliped 3 basis 0.53 rest of article’s length, 3 pappose setae on medial margin, other 2 on lateral margin; 2 pappose setae on serrate margin of ischium; merus 2.5 ischium length, 1 simple seta on medial margin, 1 pappose seta on lateral; carpus 0.68 merus length, 4 simple and 3 pappose setae; propodus 0.76 carpus length, with 2 teeth and 3 pappose setae; dactylus 0.85 propodus length, 2 setae longer than dactylus; with exopod (Fig. 10 C). — Pereopod 1 basis 0.56 rest of article’s length, 2 pappose and 2 setae; merus 2.5 ischium length, with 2 pappose and 3 simple setae; carpus as long as merus, 1 simple and 4 pappose setae; propodus 0.6 carpus length, with 7 pappose setae; dactylus with 3 pappose and 3 simple setae; with exopod (Fig. 10 D). — Pereopod 2 basis 0.85 rest of article’s length, 2 long pappose setae on lateral margin; ischium with 1 pappose seta; merus 6.5 ischium length, with 1 pappose seta; carpus 2.3 merus length, with 3 pappose and 1 simple seta; propodus 0.33 carpus length, with 1 simple seta; dactylus broken; with exopod (Fig. 10 E). — Pereopods 3–5 with decreasing basis decreasing and increasing carpus; pereopod carpus with serrate margins, pereopod 5 only medially; propodus with annulate seta; dactylus fused with terminal seta; pereopods 3 and 4 with exopods (Fig. 10 F-H). — Uropod peduncle 3 pleonite 6 length, with serrate margins, 1.58 endopod length; exopod 0.81 endopod length, both rami with serrate margins, with 4 simple and 1 microserrate terminal seta; endopod with 1 simple, 2 short robust simple and 1 terminal microserrate seta (Fig. 10 I). Remarks . Campylaspis elenaionuti sp. nov. is similar to C. wardi Băcescu, 1991, C . oanalexandru sp. nov., C. mioarae sp. nov., C. paucai sp. nov. and C. grossui Petrescu, 2006 in having 1 strong tooth medially on the margin of the carpus (much stronger in C. elenaionuti ). Campylaspis elenaionuti also has a similar slender maxilliped 3 merus as in C. aureliani sp. nov., C. chisamerai sp. nov., C. echinata Hale, C . grossui Petrescu, C. guerragarciai sp. nov., C. johnstoni Hale, 1937, C. longidentata Petrescu, C. lynseyae Petrescu, C. nowrae Petrescu, C. oanalexandru sp. nov., C. paucai sp. nov., C. pustulosa Hale, 1945, C. serrata Petrescu, C. stanae sp. nov., C. tasmaniensis Petrescu, C. trisulcata Petrescu, 2006, C. udrescui sp. nov. and C. wardi Băcescu. It differs mainly in the longer carapace with longer pseudorostrum, pereopod 2 dactylus with 3 terminal plumose setae equal in length, uropod endopod 1 seta in female and 2 in male. Distribution . Tasman Sea—Lord Howe Rise, at 1250 m depth. : Published as part of Petrescu, Iorgu, 2018, On the Family Nannastacidae (Crustacea, Cumacea) from the Australian Museum Collection, pp. 1-111 in Records of the Australian Museum 70 (1) on pages 12-13, DOI: 10.3853/j.2201-4349.70.2018.1645, http://zenodo.org/record/5236860 : {"references": ["Bacescu, M. 1991. Campylaspis wardi sp. nov. and Gynodiastylis nordaustraliana sp. nov. from the littoral waters of northern Australia. Travaux Museum d'Histoire naturelle \" Grigore Antipa \" 31: 317 - 322.", "Petrescu, I. 2006. Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria. Memoirs of Museum Victoria 63 (2): 129 - 173. https: // doi. org / 10.24199 / j. mmv. 2006.63.14", "Hale, H. M. 1945. Australian Cumacea. No. 9. The Family Nannastacidae. Records of the South Australian Museum 8 (2): 145 - 218."]}