Phallolamprops californiensis, Gerken, 2018

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 114-120

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.3799304
persistent identifier	https://treatment.plazi.org/id/03FD87BA-FF9D-2E5C-64FF-FE48D747CC3F
treatment provided by	Plazi
scientific name	Phallolamprops californiensis
status	sp. nov.

Treatment

Phallolamprops californiensis View in CoL n. sp.

( Figs 42–45 View FIGURE 42 View FIGURE 43 View FIGURE 44 View FIGURE 45 )

Type material. Holotype: adult female LACM CR 10844 About LACM ; paratype ovigerous female, dissected, LACM CR 10845 About LACM ; paratype ovigerous female LACM CR 10846 About LACM ; paratype adult male, dissected, LACM CR 10847 About LACM , paratype adult male, LACM CR 10848 About LACM , Coronodos middle (probably Middle Island, Coronado Islands ), Baja California, 15.2–18.2 m, 13 August 1958.

Other material. 1 ovigerous female, 1 adult male, 6 juveniles, LACM CR 10850, Coronodos middle, Baja California, 15.2–18.2 m, 13 August 1958. 1 adult male, LACM CR 10849 About LACM , White’s pond, 3.0 m. 1 adult male, LACM 75 About LACM - 209.5 About LACM .

Diagnosis. Carapace without lateral ridges. Telson with 5 terminal setae, central seta longest, outer pair longer than inner pair. Adult male antennal flagellum extending to posterior border of pleonite 5.

Description. Holotype ovigerous female, LACM CR 10844; paratype ovigerous female, LACM CR 10846.

Ovigerous female, 4.7 mm. Carapace unornamented; pseudorostral lobes 0.4 carapace length; eyelobe 0.1 carapace length; carapace shorter than pereonites ( Fig. 42A, B View FIGURE 42 ).

Paratype ovigerous female, LACM CR 10845 About LACM .

Antennule peduncle article 1 equal to articles 2 and 3 together, unarmed; article 2 0.5 article 1 length, with 1 simple and 2 pedunculate setae; article 3 0.8 article 2 length, with 2 pedunculate setae; main flagellum of 2 articles, equal to article 3 length, with simple seta and 2 aesthetascs; accessory flagellum of 3 articles, 0.7 main flagellum length, with 2 simple setae ( Fig. 42C View FIGURE 42 ).

Antenna of 3 articles, article 1 with 2 pappose setae, articles 2 and 3 unarmed ( Fig. 42D View FIGURE 42 ).

Mandible navicular, with 7–9 microserrate setae medially, lacinia mobilis with 4 cusps, molar broader than medial setal row ( Fig. 42E View FIGURE 42 ).

Maxillule with 2 endites; outer endite with 7 microserrate setae; inner endite with 2 simple and 2 pappose setae; palp with 2 setae ( Fig. 42F View FIGURE 42 ).

Maxilla with 3 endites; broad endite distal margin with pappose and simple setae, medial margin with row of 27 setae; medial narrow endite with 4 microserrate setae terminally; distal narrow endite with 4 microserrate setae terminally; both narrow endites extending past distal margin of broad endite ( Fig. 42G View FIGURE 42 ).

Maxilliped 1 basis produced medially as broad lobe, with 5 simple and 1 stout microserrate setae distally, lateral margin of lobe with 6 pappose and 1 simple setae, medial margin with pair of hook setae; ischium absent; merus unarmed; carpus 2.6 merus length, medial face with field of simple, pappose and comb setae, plumose seta laterally; propodus 0.5 carpus length, with 5 pappose setae; dactylus 0.6 propodus length, with 2 simple setae terminally ( Fig. 42H View FIGURE 42 ).

Maxilliped 2 basis 1.1 all other articles together, with 1 simple and 3 plumose setae; ischium 0.1 basis length, 0.4 basis width (narrow), unarmed; merus 3.0 ischium length, with plumose seta; carpus equal to merus length, with 6 simple setae medially, plumose seta laterally; propodus 0.8 carpus length, with 6 simple setae medially, 2 plumose setae laterally; dactylus 0.3 propodus length, with 3 simple setae terminally ( Fig. 42I View FIGURE 42 ).

Maxilliped 3 basis 1.6 all other articles together, with 11 pappose setae medially, 2 plumose setae laterally; ischium 0.04 basis length, with pappose seta; merus 4.5 ischium length, with 3 pappose setae medially, plumose seta laterally; carpus 1.3 merus length, with 6 simple setae medially, 2 simple setae laterally; propodus 0.8 carpus length, medial margin produced as large tooth, with 4 simple setae; dactylus 0.3 propodus length, with 4 simple setae terminally; exopod 0.9 basis length, basal article unarmed, flagellum with plumo-annulate setae ( Fig. 43A View FIGURE 43 ).

Pereopod 1 basis 1.0 all other articles together, with 12 pappose and 2 pappose–microserrate setae medially, 5 pappose setae laterally; ischium 0.04 basis length, unarmed; merus 3.5 ischium length, with simple seta; carpus 2.3 merus length, with 2 simple setae; propodus 0.9 carpus length, with 3 simple setae; dactylus 0.6 propodus length, with 5 simple setae terminally; exopod 0.7 basis length, basal article with 4 pappose setae, flagellum with plumoannulate setae ( Fig. 43B View FIGURE 43 ).

Pereopod 2 basis 0.8 all other articles together, with 1 simple and 8 pappose setae; ischium 0.07 basis length, unarmed; merus 4.0 ischium length, with 2 pappose-microserrate setae; carpus 2.1 merus length, with 2 simple and 6 pappose-microserrate setae; propodus 0.3 carpus length, unarmed; dactylus 1.6 propodus length, with 5 simple setae terminally; exopod 0.8 basis length, basal article with 3 pappose setae, flagellum with plumo-annulate setae ( Fig. 43C View FIGURE 43 ).

Pereopod 3 basis 1.8 all other articles together, with 1 pappose and 9 plumose setae; ischium 0.09 basis length, with 1 simple and 3 annulate setae; merus 2.8 ischium length, with 2 simple and 1 annulate setae; carpus 0.5 merus length, with 3 annulate setae; propodus 1.4 carpus length, with annulate seta; dactylus 0.4 propodus length, with 2 simple setae terminally; exopod rudimentary, 0.4 basis length, of 2 articles with 3 pappose and 1 simple setae ( Fig. 43D View FIGURE 43 ).

Pereopod 4 basis 1.2 all other articles together, with 3 pappose setae; ischium 0.1 basis length, with 3 annulate setae; merus 2.4 ischium length, with 1 simple and 3 annulate setae; carpus 0.9 merus length, with 2 simple and 4 annulate setae; propodus 0.7 carpus length, with annulate seta; dactylus 0.4 propodus length, with 3 simple setae terminally; exopod rudimentary, 0.3 basis length, of 2 articles with 2 pappose and 1 simple setae ( Fig. 43E View FIGURE 43 ).

Pereopod 5 basis 0.8 all other articles together, with 4 pappose setae; ischium 0.1 basis length, with 1 simple and 3 annulate setae; merus 3.7 ischium length, with 3 annulate setae; carpus 1.1 merus length, with 1 simple, 1 plumose and 4 annulate setae; propodus 0.6 carpus length, with annulate seta; dactylus 0.4 propodus length, with 3 simple setae terminally ( Fig. 43F View FIGURE 43 ).

Telson 1.3 length of pleonite 6, without lateral setae, 5 simple terminal setae, central and outermost pair long, other pair short ( Fig. 43G View FIGURE 43 ).

Uropod peduncles 1.8 pleonite 6 length, 1.4 telson length, with 3 microserrate setae medially. Uropod endopod of 3 articles, 1.1 peduncle length; article 1 1.1 articles 2 and 3 together, with 10 microserrate setae medially; article 2 0.6 article 1 length, with 6 microserrate setae medially; article 3 0.8 article 2 length, with microserrate seta medially, simple terminal seta as long as article 3. Uropod exopod 0.9 length of endopod; article 1 1.7 length of article 2, with 4 plumose setae medially; article 2 0.6 article 1 length, with 4 plumose setae medially, simple seta laterally, simple terminal seta equal to article 2 length ( Fig. 43G View FIGURE 43 ).

Paratype adult male, LACM CR 10847 About LACM .

Adult male, 4.25 mm. Carapace unornamented; pseudorostral lobes 0.5 carapace length; eyelobe 0.15 carapace length, with 4 lenses; carapace subequal to pereonites. Pair of tubular penial lobes present ventrally on pereonite 5, between pereopods. Pleonite 1 with large ventral plate 2 pappose setae anteriorly, posterior corners with long pappose setae; pleonite 2 with small ventral plate, raised from surface, with 5 hooked simple setae anteriorly, 2 pappose setae posteriorly. Pappose setae holding antennal flagellum against pleonites, in groove between plates and ventral tergite ( Fig. 44 View FIGURE 44 A–C).

Antennule peduncle article 1 equal to articles 2 and 3 together, unarmed; article 2 0.5 article 1 length, with 3 simple and 1 complex pedunculate setae; article 3 0.8 article 2 length, unarmed; main flagellum of 4 articles, 1.2 article 3 length, article 1 with 3 aesthetascs, article 3 with 3 aesthetascs; accessory flagellum of 3 articles, 0.5 length of main flagellum, with 2 simple setae ( Fig. 44D View FIGURE 44 ).

Antenna extending to posterior border of pleonite 5, peduncle of 5 articles; articles 1–2 unarmed; article 3 with pappose seta; articles 4–5 with ranks of setae not completely encircling articles; flagellum with short articles, each article with seta ( Fig. 44E View FIGURE 44 ).

Maxilliped 3 basis 1.6 all other articles together, with 15 pappose setae, 2 plumose setae at distal corner; ischium 0.01 basis length, with simple seta; merus 10.0 ischium length, with 5 plumose setae medially, plumose seta laterally; carpus 1.3 merus length, with 7 simple setae medially, plumose seta laterally; propodus 0.7 carpus length, with 8 simple setae; dactylus 0.4 propodus length, with 3 simple setae terminally; exopod 0.8 basis length, basal article with pappose seta, flagellum with plumo–annulate setae ( Fig. 44F View FIGURE 44 ).

Pereopod 1 basis equal to all other articles together, with 7 pappose, 2 pappose–microserrate, and 2 plumose setae; ischium 0.03 basis length, unarmed; merus 5.0 ischium length, with pappose seta; carpus 2.2 merus length, with 4 simple setae; propodus 0.9 carpus length, with 3 simple setae; dactylus 0.7 propodus length, with 3 simple setae and 4 simple setae terminally; exopod 0.8 basis length, basal article with 5 pappose setae, flagellum with plumo-annulate setae ( Fig. 45A View FIGURE 45 ).

Pereopod 2 basis 0.9 all other articles together, with 7 pappose setae; ischium 0.02 basis length, unarmed; merus 10.0 ischium length, with pappose seta; carpus 2.8 merus length, with 1 pappose, 2 plumose and 7 simple setae; propodus 0.2 carpus length, unarmed; dactylus 2.2 propodus length, with 5 simple setae terminally; exopod 0.9 basis length, basal article with 6 pappose setae, flagellum with plumo-annulate setae ( Fig. 45B View FIGURE 45 ).

Pereopod 3 basis 1.7 all other articles together, with plumose seta; ischium 0.08 basis length, with 3 annulate setae; merus 2.7 ischium length, with 3 simple setae; carpus 0.9 merus length, with 1 simple and 2 annulate setae; propodus 0.7 carpus length, with annulate seta; dactylus 0.4 propodus length, with 2 simple setae terminally; exopod equal to basis length, basal article with 5 pappose setae, flagellum with plumo-annulate setae ( Fig. 45C View FIGURE 45 ).

Pereopod 4 basis 1.2 all other articles together, with simple seta; ischium 0.09 basis length, with 3 simple setae; merus 3.3 ischium length, with 5 simple setae; carpus 0.8 merus length, with 2 simple and 2 annulate setae; propodus 0.8 carpus length, with annulate seta; dactylus 0.5 propodus length, with 3 simple setae terminally; exopod 0.9 basis length, basal article unarmed, flagellum with plumo-annulate setae ( Fig. 45D View FIGURE 45 ).

Pereopod 5 basis 0.6 all other articles together, with 4 pappose, 2 plumose and 1 annulate setae; ischium 0.2 basis length, with 3 annulate setae; merus 2.8 ischium length, with 3 annulate setae; carpus 1.1 merus length, with 2 simple and 4 annulate setae; propodus 0.7 carpus length, with annulate seta; dactylus 0.4 propodus length, with 3 setae terminally ( Fig. 45E View FIGURE 45 ).

Penial lobes 0.7 length of pereopod 5 basis, curved anteriorly distally ( Fig. 45E View FIGURE 45 ).

Telson 1.7 length of pleonite 6, without lateral setae, 5 microserrate terminal setae, central and outer pair long, other pair short ( Fig. 45F View FIGURE 45 ).

Uropod peduncles 2.6 pleonite 6 length, 1.6 telson length, with 19–20 microserrate setae medially. Uropod endopod of 3 articles, equal to peduncle length; article 1 1.1 articles 2 and 3 together, with 12 microserrate setae medially; article 2 0.5 article 1 length, with 7 microserrate setae medially, 2 pedunculate setae laterally; article 3 0.9 article 2 length, with microserrate seta medially, simple terminal seta subequal to article 3. Uropod exopod 0.9 length of endopod; article 1 1.4 article 2 length, with 3–4 plumose setae medially; article 2 0.7 article 1 length, with 4 plumose setae medially, simple seta laterally, simple terminal seta subequal to article 2 length ( Fig. 45F View FIGURE 45 ).

Etymology. The species is named californiensis for location of collection, the coastal waters of California.

Depth. 33– 20 m.

Distribution. Southern California.

Remarks. Phallolamprops californiensis females can be distinguished from P. pribilofensis females by the pseudorostrum, which is blunt in side and dorsal views in P. californiensis , and pointed in side and dorsal views in P. pribilofensis . Also, in P. californiensis the telson terminal central seta and outer pair of setae are long, and the inner pair is very short, while in P. pribilofensis the terminal setae are much more equal in length. The adult males can be distinguished from each other by the form of the penial lobes and the ventral elaboration of pleonites 1 and 2. In P. californiensis the penial lobes are distinctly hooked, pointing anteriorly, while in P. pribilofensis the penial lobes are simple tubes, and do not appear hooked. In P. californiensis the ventral structure on pleonite 1 has only two pairs of setae, while the ventral structure on pleonite 1 in P. pribilofensis has seven pairs of setae.