Lysmata lipkei Okuno & Fiedler 2010
Creators: name: Santos, Andréa
name: Alves, Douglas Fernandes Rodrigues
name: Barros-Alves, Samara De Paiva
name: Pescinelli, Régis Augusto
name: Santos, Rafael De Carvalho
name: Costa, Rogério Caetano Da
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Hippolytidae
Lysmata
Lysmata lipkei

description: Lysmata lipkei Okuno & Fiedler, 2010
Zoea I (Figure 1)
Size (mean ± s.d.): CL = 0.31–0.40 mm (0.35 ± 0.02 mm); TL = 2.00– 2.31 mm (2.06 ± 0.4 mm).
Carapace (Figure 1A, B): Rostrum slender and long, not reaching the end of the antennular peduncle; eyes sessile; anterior dorsomedial papilla present; one pterygostomial spine and four denticles along anterior ventral margin.
Antennule (Figure 1C): Peduncle unsegmented, terminally with one long plumose seta and a small process; outer flagellum with one plumose seta, three long aesthetascs and one short aesthetasc that ends in a spoon-shaped membrane on distal margin.
Antenna (Figure 1D): Peduncle unsegmented; endopod with one long plumose seta; exopod (scaphocerite) 5- segmented, with nine plumose setae on the inner margin (2, 1, 1, 1, 4), two plumose setae on the outer margin and one simple setae on apex (1, 1, 0, 0, 1).
Mandibles (Figure 1E): Asymmetrical; palp absent; incisor and molar processes developed.
Maxillule (Figure 1F): Coxal endite with one simple seta, five plumose setae and two sparsely plumose setae; basial endite with five cuspidate setae; endopod unsegmented with one sparsely hardy plumodenticulate seta and one sparsely plumose subterminally and three terminal setae (two sparsely hardy plumodenticulate and one sparsely plumose); microtrichia along inner side of coxal and basial endites.
Maxilla (Figure 1G): Coxal endite bilobed with 9 + 4 setae (two sparsely plumose, eight plumose, one papposerrate and two sparsely hardy plumose); basial endite bilobed with 4 + 4 setae (two sparsely plumose, four plumose and two papposerrate); endopod unsegmented with nine setae arranged like 3 + 2 + 1 + 3 (three plumose, two sparsely plumose, three sparsely hardy plumodenticulate and one simple); exopod with five plumose setae; microtrichia along basial endite and exopod.
First maxilliped (Figure 1H): Coxa with five setae (four sparsely plumose and one sparsely hardy plumose); basis with 11 setae (two sparsely hardy plumose, two plumodenticulate and seven sparsely plumose); endopod 4- segmented, with 3 (sparsely plumose), 1 (sparsely plumose), 2 (sparsely plumose), 4 (one median simple and three terminal sparsely plumose) setae; exopod unsegmented with one subterminal and three terminal plumose setae).
Second maxilliped (Figure 1I): Coxa unarmed; basis with six setae (five sparsely plumose and one simple), arranged like 1 + 2 + 3; endopod 3-segmented, bearing 4 (three simple setae and one sparsely plumose, arranged like 3 + 1), 2 (sparsely plumose), 6 (one subterminal simple seta and five terminal denticulate setae); exopod 4-segmented, bearing 2, 2, 2, 3 plumose setae.
Third maxilliped (Figure 1J): Coxa unarmed; basis with two sparsely plumose setae; endopod slightly longer than exopod and 4-segmented, bearing setae arranged like 2 + 1 (simple), 0, 3 (denticulate), 3 (one denticulate, one serrate and one simple) setae; exopod 5-segmented, bearing 2, 2, 2, 3 plumose setae.
First pereiopod (Figure 1K): Biramous bud.
Fifth pereiopod: Absent.
Pleon (Figure 1A, B): Five pleomeres; fifth pleomere with a pair of dorsolateral spines on posterior margin. Pleopods absent.
Telson (Figure 1A, B, L): Triangular, with 7 + 7 setae (outermost two pairs of setae plumose only on inner side); minute spines between and around setae (except outermost pair). Uropods absent.
Zoea II (Figure 2)
Size (mean ± s.d.): CL = 0.32–0.39 mm (0.35 ± 0.02 mm); TL = 2.13–2.35 mm (2.26 ± 0.08 mm).
Carapace (Figure 2A, B): Eyes stalked, with peduncle longer than antennal peduncle; one pair of supraorbital spines present; otherwise unchanged.
Antennule (Figure 2C): Peduncle unsegmented, with three plumose setae distally (one longer than the other two); outer flagellum with three long aesthetascs and one short aesthetasc; otherwise unchanged.
Antenna (Figure 2D): Exopod (scaphocerite) 4-segmented, bearing nine plumose setae on inner margin (3, 1, 1, 4), one sparsely plumose seta on outer margin and one simple seta on apex (1, 0, 0, 1); otherwise unchanged.
Mandibles (Figure 2E): Incisor and molar processes developed.
Maxillule (Figure 2F): Coxal endite with seven setae (one simple seta and six plumose); basial endite with six cuspidate setae; otherwise unchanged.
Maxilla (Figure 2G): Coxal endite bilobed with 8 + 4 setae (one sparsely plumose seta, nine plumose and two plumodenticulate); endopod unsegmented with nine setae arranged like 3 + 2 + 1 + 3 (three sparsely plumose, two plumose, three sparsely hardy plumodenticulate and one simple); otherwise unchanged.
First maxilliped (Figure 2H): Coxa with four setae (three sparsely plumose and one sparsely hardy plumose); basis with 11 setae (two sparsely hardy plumose, two plumodenticulate and seven sparsely plumose); exopod bearing one subterminal plumose seta and four terminal plumose setae; otherwise unchanged.
Second maxilliped (Figure 2I): Basis with six setae (sparsely plumose), arranged like 1 + 2 + 3; first segment of endopod with four setae (three sparsely plumose and one simple, arranged like 3 + 1); otherwise unchanged.
Third maxilliped (Figure 2J): Basis with one sparsely plumose seta; endopod 4-segmented, with 2 + 1 (simple setae), 0, 5 (denticulate setae), 3 (one denticulate, one serrate and one simple seta); exopod 5-segmented, bearing 2, 2, 2, 2, 4 plumose setae; otherwise unchanged.
First pereiopod (Figure 2K): Biramous bud.
Fifth pereiopod (Figure 2L): Uniramous bud.
Pleon (Figure 2A, B): Unchanged.
Uropod (Figure 2M): Exopod present as bud.
Telson (Figure 2A, B, M): Posterior margin with 8 + 8 setae (outermost pair of setae plumose only on inner side); otherwise unchanged.
Zoea III (Figure 3)
Size (mean ± s.d.): CL = 0.45–0.50 mm (0.46 ± 0.01 mm); TL = 2.52–2.90 mm (2.80 ± 0.26 mm).
Carapace (Figure 3A, B): Unchanged.
Antennule (Figure 3C): Peduncle 2-segmented, with the proximal segment bearing a small process and six plumose setae, arranged like 1 + 5, and the distal segment bearing nine setae (seven plumose and two simple); outer flagellum with two long aesthetascs and one long plumose seta terminally; inner flagellum with one long plumose seta terminally.
Antenna (Figure 3D): Endopod short and spine-like, with one simple seta; exopod (scaphocerite) 3-segmentad, with 11 plumose setae on inner margin (6, 1, 4), two setae (one simple and one plumose) on outer margin of first segment and one simple seta on apex; otherwise unchanged.
Mandibles (Figure 3E): Incisor and molar processes developed.
Maxillule (Figure 3F): Coxal endite with seven setae (two sparsely plumose and five plumose); otherwise unchanged.
Maxilla (Figure 3G): Coxal endite bilobed with 9 + 4 setae (two sparsely plumose, one sparsely hardy plumose, nine plumose and one plumodenticulate); basial endite bilobed with 4 + 4 setae (four sparsely plumose, two papposerrate and two plumose); endopod unsegmented with nine setae arranged like 3 + 2 + 1 + 3 (four sparsely plumose, four sparsely hardy plumodenticulate and one simple); exopod with eight plumose setae; otherwise unchanged.
First maxilliped (Figure 3H): Unchanged.
Second maxilliped (Figure 3I): First segment of endopod with three setae (two simple and one sparsely plumose); otherwise unchanged.
Third maxilliped (Figure 3J): Basis with two sparsely plumose setae; second segment of endopod with one simple seta; otherwise unchanged.
First pereiopod (Figure 3K): Coxa unarmed; basis with one simple seta; endopod 4-segmented, bearing 2 (simple setae), 1 (simple seta), 3 (denticulate setae), 3 (one serrate and two simple setae); exopod 3-segmented, with 2, 2, 4 plumose setae.
Second pereiopod (Figure 3L): Biramous bud.
Fifth pereiopod (Figure 3M): Uniramous bud.
Pleon (Figure 3A, B): Sixth pleomere differentiated from telson; otherwise unchanged.
Uropods (Figure 3A, B, N): Biramous; exopods well-developed with nine plumose setae and microtrichia along the margins; endopods small with two short plumose setae apically.
Telson (Figure 3A, B, N): Posterior margin with and 7 + 7 plumose setae; lateral margin with one pair of simple setae; otherwise unchanged.
description: Published as part of Santos, Andréa, Alves, Douglas Fernandes Rodrigues, Barros-Alves, Samara De Paiva, Pescinelli, Régis Augusto, Santos, Rafael De Carvalho & Costa, Rogério Caetano Da, 2021, Morphology of the early larval stages of Lysmata lipkei Okuno & Fiedler, 2010 (Caridea: Lysmatidae): an invasive shrimp in the Western Atlantic, pp. 71-88 in Zootaxa 4903 (1) on pages 73-78, DOI: 10.11646/zootaxa.4903.1.4, http://zenodo.org/record/4422715