Phallolamprops californiensis Gerken 2018, n. sp.
Creators: name: Gerken, Sarah
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Cumacea
Lampropidae
Phallolamprops
Phallolamprops californiensis

description: Phallolamprops californiensis n. sp.
(Figs 42–45)
Type material. Holotype: adult female LACM CR 10844; paratype ovigerous female, dissected, LACM CR 10845; paratype ovigerous female LACM CR 10846; paratype adult male, dissected, LACM CR 10847, paratype adult male, LACM CR 10848, 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, White’s pond, 3.0 m. 1 adult male, LACM 75 - 209.5.
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).
Paratype ovigerous female, LACM CR 10845.
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).
Antenna of 3 articles, article 1 with 2 pappose setae, articles 2 and 3 unarmed (Fig. 42D).
Mandible navicular, with 7–9 microserrate setae medially, lacinia mobilis with 4 cusps, molar broader than medial setal row (Fig. 42E).
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).
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).
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).
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).
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).
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).
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).
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).
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).
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).
Telson 1.3 length of pleonite 6, without lateral setae, 5 simple terminal setae, central and outermost pair long, other pair short (Fig. 43G).
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).
Paratype adult male, LACM CR 10847.
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 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).
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).
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).
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).
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).
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).
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).
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).
Penial lobes 0.7 length of pereopod 5 basis, curved anteriorly distally (Fig. 45E).
Telson 1.7 length of pleonite 6, without lateral setae, 5 microserrate terminal setae, central and outer pair long, other pair short (Fig. 45F).
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).
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.
description: Published as part of Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, pp. 1-192 in Zootaxa 4428 (1) on pages 114-120, DOI: 10.11646/zootaxa.4428.1.1, http://zenodo.org/record/3769771