Quasiparalamprops chathamensis, Gerken, 2018
Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 176-181
publication ID |
https://doi.org/ 10.11646/zootaxa.4428.1.1 |
publication LSID |
lsid:zoobank.org:pub:2419A7F0-5AED-47EC-86BB-06AADB2A4BD9 |
DOI |
https://doi.org/10.5281/zenodo.3799170 |
persistent identifier |
https://treatment.plazi.org/id/03FD87BA-FF43-2E9F-64FF-FC35D059C868 |
treatment provided by |
Plazi |
scientific name |
Quasiparalamprops chathamensis |
status |
sp. nov. |
Quasiparalamprops chathamensis View in CoL n. sp.
( Figs 70–72 View FIGURE 70 View FIGURE 71 View FIGURE 72 )
Type material. Holotype: ovigerous female, dissected, NIWA 45701 View Materials , TAN0705 /99, 44.6°S, 178.5°W, 1076–1103 m, Chatham Rise , New Zealand, April 4, 2007 GoogleMaps . Paratype: adult male, dissected, NIWA 45702 View Materials , collected with holotype GoogleMaps .
Diagnosis. Female. Carapace with 3 pairs of ridges, 1 long pair dorsomedially, 2 short pairs, 1 posterolaterally and 1 mid–laterally; marginal carina serrate; dorsal midline serrate from midpoint to end of eyelobe; pseudorostral lobes with dorsal serrate line, parallel to medial suture, anterior of eyelobe. Male. Carapace with 2 pairs of ridges, 1 long pair dorsomedially, 1 shorter pair laterally, ventral to the long ridge; marginal carina entire, dorsal midline without serrations.
Description. Holotype subadult female, NIWA 45701.
Subadult female, 6.5 mm. Carapace dorsoventrally flattened, with large dorsal ridge on posterior 0.5 of carapace, 1 short posterior ridge and 1 short mid–body ridge between dorsal ridge and marginal carina, marginal carina serrate, anterior dorsal crest with teeth; pseudorostral lobes 0.4 carapace length, with row of spines parallel to suture; eyelobe 0.07 carapace length, no lenses; carapace 1.5 length of pereonites together; pereonites 3–5 with dorsal tubercles; pleonites 1–6 with paired serrate lateral ridges ( Fig. 70A, B View FIGURE 70 ).
Antennule peduncle article 1 longer than articles 2 and 3 together, distal margin serrate, unarmed; article 2 0.6 article 1 length, distal margin serrate, article scaled, 1 plumose seta; article 3 0.7 article 2 length, with 3 simple setae; main flagellum of 4 articles, with simple setae and 2 aesthetascs terminally; accessory flagellum of 4 articles, 0.8 length of main flagellum, with simple setae ( Fig. 70C View FIGURE 70 ).
Antenna of 4 articles; article 1 with 1 pappose seta; article 2 with 1 pappose seta; article 3 unarmed; article 4 1.7 article 3 length, with 3 simple setae and 2 pedunculate setae terminally ( Fig. 70D View FIGURE 70 ).
Pereopod 3 basis 1.4 all other articles together, with 2 simple setae and 1 tooth distally; ischium 0.08 basis length, unarmed; merus 3.0 ischium length, with 1 simple seta; carpus 0.8 merus length, with 1 simple and 1 annulate seta; propodus 0.6 carpus length, with 1 annulate seta; dactylus 0.7 propodus length, with 3 simple setae terminally; exopod rudimentary, 0.1 basis length, of 2 articles with simple setae ( Fig. 70E View FIGURE 70 ).
Pereopod 5 basis equal to next three articles together, with 1 simple seta; ischium 0.2 basis length, unarmed; merus 1.75 ischium length, with 1 simple seta; carpus equal to merus length, unarmed; propodus 0.7 carpus length, with 1 simple and 1 annulate setae; dactylus 0.6 propodus length, with 2 simple setae terminally ( Fig. 70F View FIGURE 70 ).
Telson 3.3 length of pleonite 6, with 3 microserrate lateral setae, 3 microserrate terminal setae, longer than lateral setae ( Fig. 70G View FIGURE 70 ).
Uropods broken.
Paratype adult male, NIWA 45702 View Materials . Adult male, broken. Carapace dorsoventrally flattened, with large dorsal carina on posterior 0.5 of carapace, 1 mid lateral carina between dorsal carina and marginal carina, marginal carina entire, in comparison to the female the posterior mid–lateral carina is missing ( Fig. 71A, B View FIGURE 71 ) .
Antennule peduncle article 1 subequal to article 2, unarmed; article 2 margin with 1 tooth, 7 simple setae; article 3 0.6 article 2 length, with 3 simple setae; main flagellum of 5 articles, first article expanded with many slender aesthetascs, with simple setae and 2 aesthetascs terminally; accessory flagellum of 3 articles, equal to main flagellum length, with simple setae ( Fig. 71C View FIGURE 71 ).
Antenna peduncle of 5 articles; article 1 unarmed; article 2 with 2 plumose setae; article 3 shortest, unarmed; articles 4 and 5 with encircling rows of setae; flagellum of short articles, each article encircled with row of setae, extending to posterior border of pleonite 4 ( Fig. 71D View FIGURE 71 ).
Mandible with 10 microserrate setae medially, lacinia mobilis with 3 cusps ( Fig. 71E View FIGURE 71 ).
Maxillule with 2 endites; outer endite with 11 simple setae; inner endite with 4 simple and 1 dentate setae; palp present, no setae ( Fig. 71F View FIGURE 71 ).
Maxilla with 3 endites; broad endite distal margin with simple setae, 1 pappose seta at medial corner, medial margin with row of simple setae; medial narrow endite with 4 microserrate setae terminally; distal narrow endite with 5 microserrate setae terminally; both narrow endites just past distal margin of broad endite ( Fig. 71G View FIGURE 71 ).
Maxilliped 1 basis produced distally as broad lobe, distal margin of lobe with pappose and dentate setae, medial margin with row of pappose setae; ischium absent; merus with 1 plumose seta laterally; carpus 1.7 merus length, medial face with pappose and comb setae, 1 plumose seta laterally; propodus 0.75 carpus length, with simple and plumose setae; dactylus 0.5 propodus length, with3 simple setae terminally ( Fig. 72A View FIGURE 72 ).
Maxilliped 2 basis as long as all other articles together, with 4 plumose setae distally; ischium 0.1 basis length, with 1 plumose seta; merus 0.75 ischium length, with 2 plumose setae; carpus 4.0 merus length, with 5 plumose setae medially, 1 plumose seta laterally; propodus 0.8 carpus length, with simple and plumose setae; dactylus 0.5 propodus length, with 3 simple setae terminally ( Fig. 72B View FIGURE 72 ).
Maxilliped 3 basis longer than all other articles together, with plumose setae, row of teeth mid–article, not expanded distally; ischium 0.02 basis length, unarmed; merus 5.0 ischium length, with 2 plumose setae medially, 1 plumose seta laterally; carpus 2.6 merus length, with 9 plumose setae; propodus 0.8 carpus length, with 5 plumose setae; dactylus 0.5 propodus length, with 2 simple setae terminally; exopod longer than basis, flagellum with plumo-annulate setae ( Fig. 72C View FIGURE 72 ).
Pereopod 1 basis equal to next 4 articles together, margins serrate, with plumose setae; ischium 0.05 basis length, unarmed; merus 4.0 ischium length, with 2 plumose and 2 simple setae; carpus 2.1 merus length, with 1 plumose and 5 simple setae; propodus 0.8 carpus length, with 3 simple setae; dactylus 0.8 propodus length, with 6 simple setae and 2 simple setae terminally; exopod shorter than basis, basal article with 5 plumose setae, flagellum with plumo-annulate setae ( Fig. 72D View FIGURE 72 ).
Pereopod 2 broken, not illustrated.
Pereopod 3 basis 1.9 all other articles together, with 1 simple and 3 pappose setae; ischium 0.06 basis length, with 1 simple seta; merus 2.3 ischium length, with 1 plumose seta; carpus equal to merus length, with 4 simple and 2 annulate setae; propodus 0.7 carpus length, with 1 annulate seta; dactylus 0.6 propodus length, with 3 simple setae terminally; exopod shorter than basis, basal article with 4 plumose setae, flagellum with plumo-annulate setae ( Fig. 72E View FIGURE 72 ).
Pereopod 4 basis 1.5 all other articles together, with 2 pappose and 6 plumose setae; ischium 0.07 basis length, with 1 annulate seta; merus 2.7 ischium length, with 1 annulate seta; carpus 1.1 merus length, with 3 simple and 2 annulate setae; propodus 0.6 carpus length, with 1 annulate seta; dactylus 0.8 propodus length, with 3 simple setae terminally; exopod shorter than basis, basal article with 2 plumose setae, flagellum with plumo-annulate setae ( Fig. 72F View FIGURE 72 ).
Pereopod 5 basis 1.2 all other articles together, with 1 pappose, 1 simple and 2 plumose setae; ischium 0.1 basis length, with 1 annulate seta; merus 2.3 ischium length, with 1 annulate seta; carpus 1.4 merus length, with 1 simple and 3 annulate setae; propodus 0.5 carpus length, with 1 annulate seta; dactylus 0.4 propodus length, with 3 simple setae terminally ( Fig. 72G View FIGURE 72 ).
Pleopod 1 biramous, basal article with 4 plumose setae; medial ramus with projection, both rami with long plumo-annulate setae ( Fig. 72H View FIGURE 72 ).
Pleopod 2 biramous, basal article with 5 plumose setae; medial ramus with projection, both rami with long plumo-annulate setae ( Fig. 72I View FIGURE 72 ).
Pleopod 3 biramous, basal article with 4 plumose setae; medial ramus with projection, both rami with long plumo-annulate setae ( Fig. 72J View FIGURE 72 ).
Telson and uropods missing.
Etymology. The species is named chathamensis for the place of collection, Chatham Rise.
Depth. 1076–1103 m.
Distribution. Chatham Rise, New Zealand, 44.6°S, 176.5°W.
Remarks. Quasiparalamprops chathamensis n. sp. can be distinguished from species of Paralamprops and Platytyphlops by the maxillule palp without setae. Both maxillules in the adult male were observed, and neither setae nor setal bases were present.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |
|
Genus |