Farragolamprops seminalis, Gerken, 2018

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 53-60

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.3799434
persistent identifier	https://treatment.plazi.org/id/03FD87BA-FFD8-2E10-64FF-FDE4D1CCCE02
treatment provided by	Plazi
scientific name	Farragolamprops seminalis
status	sp. nov.

Treatment

Farragolamprops seminalis View in CoL n. sp.

( Figs 16–19 View FIGURE 16 View FIGURE 17 View FIGURE 18 View FIGURE 19 )

Type material. Holotype: preparatory female, NIWA 93214 View Materials , 43.80°S, 175.31°E, 418–422 m, Chatham Rise, 27 April 2007 GoogleMaps . Paratypes: preparatory female. dissected, NIWA 94874 View Materials , collected with holotype; adult male, dissected, NIWA 94872 View Materials , 42.62°S, 175.92°E, 1194–1199 m, Chatham Rise, 26 April 2007 GoogleMaps .

Diagnosis. Carapace with multiple serrate ridges dorsal of marginal carina; eyelobe with lenses. Telson terminal setae unequal, central seta short.

Description. Holotype preparatory female, NIWA 93214; paratype preparatory female, NIWA 94874.

Preparatory female, holotype 8.0 mm, paratype 8.0 mm. Carapace with 3 pairs of serrate ridges dorsal of serrate marginal carina, dorsal crest serrate, expanded dorsolaterally; pseudorostral lobes 0.4 carapace length, with serrate ridge anterior of eyelobe; eyelobe 0.06 carapace length, with 3 lenses; carapace 1.5 length of pereonites together. Pereonites with pair of serrate ridges dorsally. Pleonites 4 and 5 with dorsal serrations ( Fig. 16A, B View FIGURE 16 ).

Antennule peduncle article 1 longer than articles 2 and 3 together, with 2 simple setae; article 2 0.6 article 1 length, with simple setae; article 3 0.6 article 2 length, with long simple setae; main flagellum of 4 articles, 1.1 peduncle article 1 length, with few simple setae and 2 aesthetascs; accessory flagellum of 3 articles, equal to main flagellum length, with simple setae terminally ( Fig. 16C View FIGURE 16 ).

Antenna not examined.

Mandible navicular, with 11–13 microserrate setae medially, lacinia mobilis with 1 cusp ( Fig. 16D View FIGURE 16 ).

Maxillule with 2 endites; outer endite with 11 stout setae; inner endite with 1 simple, 1 microserrate and 2 beak setae; palp with seta ( Fig. 16E View FIGURE 16 ).

Maxilla with 3 endites; broad endite with distal row of simple setae, medial corner with microserrate and pappose setae, medial margin with row of pedunculate setae and 3 pappose setae; medial narrow endite with 4 microserrate setae terminally; distal narrow endite with 5 microserrate setae terminally; both narrow endites extending past distal margin of broad endite ( Fig. 16F View FIGURE 16 ).

Maxilliped 1 basis produced as broad lobe medially, medial margin with row of pappose setae, distal margin with 4 simple and 1 stout setae; ischium absent; merus with pappose seta distally; carpus 1.3 merus length, with comb and pappose setae on medial face, pappose seta distally; propodus 0.7 carpus length, with 4 simple and 2 plumose setae; dactylus 0.6 propodus length, with 4 simple setae terminally ( Fig. 16G View FIGURE 16 ).

Maxilliped 2 basis broken at base, with 3 plumose and 2 thickly plumose setae distally, margins lines with fine hairlike setae; ischium unarmed; merus 4.0 ischium length, with thickly plumose seta medially; carpus 2.3 merus length, with 6 plumose setae medially, distal plumose seta; propodus 0.5 carpus length, with 5 plumose setae, lateral margin serrate; dactylus 0.7 propodus length, with 3 simple setae terminally ( Fig. 16H View FIGURE 16 ).

Maxilliped 3 basis equal to all other articles together, with plumose and pappose setae medially, distal corner with 3 plumose setae; ischium 0.04 basis length, unarmed; merus 4.0 ischium length, with 1 plumose and 1 pappose setae medially, 3 plumose setae distally; carpus 3.1 merus length, with plumose setae medially, 2 plumose setae distally; propodus 0.5 carpus length, with 6 plumose setae; dactylus 0.5 propodus length, with 2 simple setae terminally; exopod 0.9 basis length, basal article with 3 simple setae, flagellum with plumo-annulate setae ( Fig. 17A View FIGURE 17 ).

Pereopod 1 basis 0.9 next 4 articles together, margins with plumose setae, produced as tooth distally; ischium 0.07 basis length, with 2 plumose setae; merus 3.4 ischium length, with 1 simple and 1 plumose setae; carpus 1.7 merus length, with 2 simple setae; propodus 0.8 carpus length, with 3 simple setae; dactylus broken; exopod 0.7 basis length, basal article with 4 simple and 1 pappose setae, flagellum with plumo-annulate setae ( Fig. 16B View FIGURE 16 ).

Pereopod 2 basis 0.9 all other articles together, with 3 simple setae, margin serrate distally, pdouced as single tooth proximally; ischium 0.06 basis length, with 2 simple setae; merus 2.5 ischium length, with 2 stout and 1 slender simple setae; carpus 3.3 merus length, with 10 simple and 2 microserrate with single subterminal setule setae; propodus 0.2 carpus length, with simple seta; dactylus 3.3 propodus length, with 7 simple setae and simple seta terminally; exopod 0.5 basis length, basal article with 2 plumose setae, flagellum with plumo-annulate setae ( Fig. 16C View FIGURE 16 ).

Pereopod 3 basis 2.0 all other articles together, with 2 simple and 1 plumose setae, margin serrate proximally; ischium 0.05 basis length, unarmed; merus 4.7 ischium length, with simple seta; carpus 0.6 merus length, with annulate seta; propodus 0.6 carpus length, with annulate seta; dactylus 0.4 propodus length, with simple seta terminally; exopod rudimentary, 0.08 basis length, of 2 articles with 4 simple setae ( Fig. 17D View FIGURE 17 ).

Pereopod 4 basis 1.6 all other articles together, with 2 simple setae; ischium 0.08 basis length, with simple seta; merus 3.0 ischium length, with simple seta; carpus 0.7 merus length, with 1 simple and 1 annulate setae; propodus 0.6 carpus length, with annulate seta; dactylus 0.6 propodus length, with simple seta terminally; exopod rudimentary, 0.06 basis length, of 2 articles with 3 simple setae ( Fig. 17E View FIGURE 17 ).

Pereopod 5 basis 1.4 all other articles together, with 4 simple setae; ischium 0.1 basis length, with simple seta; merus 2.0 ischium length, with simple seta; carpus 1/0 merus length, with 1 simple and 1 annulate setae; propodus 0.5 carpus length, with annulate seta; dactylus 0.3 propodus length, with simple seta terminally ( Fig. 17F View FIGURE 17 ).

Telson 2.0 length of pleonite 6, with 8 microserrate with single subterminal setule setae laterally, 3 microserrate setae terminally, central seta short ( Fig. 17G View FIGURE 17 ).

Uropod peduncles 2.4 pleonite 6 length, 1.2 telson length, with 15–16 microserrate with single subterminal setule setae medially. Uropod endopod of 3 articles, subequal to peduncle length; article 1 1.3 articles 2 and 3 together, with 11 microserrate with single subterminal setule setae medially, few simple setae laterally; article 2 0.4 article 1 length, with microserrate with single subterminal setule seta medially; article 3 0.7 article 2 length, with 2 microserrate with single subterminal setule setae medially, terminal seta with single subterminal setule. Uropod exopod of 2 articles, broken ( Fig. 17G View FIGURE 17 ).

Paratype adult male, NIWA 94872 View Materials .

Adult male, 6.7 mm. Carapace with 2 pairs of entire ridges dorsal of serrate marginal carina, dorsolateral expansion, dorsal crest entire; pseudorostral lobes 0.4 carapace length, no ridges; eyelobe 0.1 carapace length, with 4 lenses; carapace 1.4 length of pereonites together. Pereonites with pair of entire dorsal ridges. Pleonite 5 with dorsal serrations ( Fig. 18A, B View FIGURE 18 ).

Antennule peduncle article 1 equal to articles 2 and 3 together, unarmed; article 2 0.7 article 1 length, with 6 plumose and 2 pedunculate setae; article 3 0.6 article 2 length, with few simple setae; main flagellum of 4 articles, with simple setae on article 1, few simple setae on other articles, 2 aesthetascs terminally; accessory flagellum of 3 articles, 0.9 main flagellum length, with simple setae terminally ( Fig. 18C, D View FIGURE 18 ).

Antenna extending to posterior border of pereonite 5; peduncle of 5 articles, with pappose setae; articles 4–5 with ranks of setae, completely circling articles; flagellum with several short setae on each article ( Fig. 18 E, F View FIGURE 18 ).

Maxilliped 3 basis 1.1 all other articles together, with pappose setae medially, 4 plumose setae distally; ischium 0.06 basis length, unarmed; merus 2.0 ischium length, with 2 pappose setae medially, 1 plumose and 1 pappose setae distally; carpus 3.3 merus length, with plumose setae medially, 2 plumose setae laterally; propodus 0.6 carpus length, with many plumose setae medially and laterally; dactylus 0.6 propodus length, with 4 simple setae terminally; exopod 0.9 basis length, basal article with plumose seta, flagellum with plumo-annulate setae ( Fig. 19A View FIGURE 19 ).

Pereopod 1 basis 0.7 all other articles together, margin serrate, with pappose setae on margins; ischium 0.08 basis length, with pappose seta; merus 3.0 ischium length, with 4 pappose setae; carpus 0.6 merus length, with 2 simple setae; propodus 0.9 carpus length, with 4 simple setae; dactylus 0.9 propodus length, with 4 simple setae and 2 simple setae terminally; exopod 0.9 basis length, basal article unarmed, flagellum with plumo-annulate setae ( Fig. 19B View FIGURE 19 ).

Pereopod 2 basis 0.9 all other articles together, margin serrate distally, with 1 simple, 2 pappose and 3 plumose setae; ischium 0.06 basis length, with simple seta; merus 2.8 ischium length, with 1 stout and 1 plumose setae; carpus 2.7 merus length, with 5 stout setae; propodus 0.2 carpus length, with simple seta; dactylus 3.0 propodus length, with 7 simple setae and 3 simple setae terminally; exopod 0.6 basis length, basal article with plumose seta, flagellum with plumo-annulate setae ( Fig. 19C View FIGURE 19 ).

Pereopod 3 basis 1.5 all other articles together, margin serrate sitally, with 2 pappose setae; ischium 0.07 basis length, with 2 simple setae; merus 4.0 ischium length, with simple seta; carpus 0.6 merus length, with annulate seta; propodus 0.7 carpus length, with annulate seta; dactylus 0.7 propodus length, with simple seta and simple seta terminally; exopod 0.7 basis length, basal article with plumose seta, flagellum with plumo-annulate setae ( Fig. 19D View FIGURE 19 ).

Pereopod 4 basis 1.6 all other articles together, with 10 plumose setae; ischium 0.06 basis length, unarmed; merus 4.0 ischium length, with simple seta; carpus 0.8 merus length, with 1 simple and 1 annulate setae; propodus 0.6 carpus length, with annulate seta; dactylus 0.6 propodus length, with simple seta and simple seta terminally; exopod 0.7 basis length, basal article with 2 plumose setae, flagellum with plumo-annulate setae ( Fig. 19E View FIGURE 19 ).

Pereopod 5 basis 1.2 all other articles together, with 3 plumose setae and fine hair–like setae; ischium 0.1 basis length, with simple seta; merus 2.7 ischium length, with simple seta; carpus 0.9 merus length, with annulate seta; propodus 0.7 carpus length, with annulate seta; dactylus 0.6 propodus length, with simple seta and simple seta terminally ( Fig. 19F View FIGURE 19 ).

Penial lobe 0.6 length of pereopod 5 basis, 2.0 width of pereopod 5 basis ( Fig. 19F View FIGURE 19 ).

Pleopod 1 biramous, medial ramus uniarticulate, lateral ramus biarticulate, with long plumo-annulate setae ( Fig. 19G View FIGURE 19 ).

Pleopod 2 basal article shorter than pleopod 1 basal article ( Fig. 19H View FIGURE 19 ).

Pleopod 3 basal article shorter than pleopod 2 basal article ( Fig. 19I View FIGURE 19 ).

Telson 2.5 length of pleonite 6, with 6–7 microserrate lateral setae, 3 mciroserrate terminal setae, central seta short ( Fig. 20 View FIGURE 20 ).

Uropod peduncles 2.9 pleonite 6 length, 1.2 telson length. Uropod endopod of 3 articles, 0.9 peduncle length; article 1 135 length of articles 2 and 3 together, with 12 microserrate setae medially, simple seta laterally; article 2 0.4 article 1 length, with 6 microserrate setae medially; article 3 0.8 article 2 length, with 3 microserrate setae medially, terminal seta microserrate. Uropod exopod 0.9 length of endopod; article 1 0.2 article 2 length, unarmed; article 2 with 8 microserrate setae, terminal seta microserrate ( Fig. 20 View FIGURE 20 ).

Etymology. The name comes from the Latin seminalis , meaning seed, alluding to the shape of the carapace.

Depth. 418–1199 m.

Distribution. Chatham Rise, New Zealand, 34.80– 42.62°S, 175.31– 175.92°E.

Remarks. Farragolamprops seminalis is readily distinguishable from the other species in the genus, F. spinacristatus , by the carapace and the telson terminal setae. In F. seminalis there are multiple ridges dorsal of the marginal carina, serrate in the female and entire in the male, while in F. spinacristatus there are no ridges dorsal of the marginal carina. In F. seminalis the three telson terminal setae are unequal, with the central seta short, while in F. spinacristatus the three telson terminal setae are equal in length.