Lysmata wurdemanni ( Gibbes, 1850 )

Pachelle, Paulo P. G., Carvalho, Leina, Alves, Douglas F. R. & Anker, Arthur, 2020, A revision of the Brazilian species of Lysmata Risso, 1816 (Decapoda: Caridea Lysmatidae), with discussion of the morphological characters used in their identification, Zootaxa 4789 (1), pp. 55-90 : 78-84

Lysmata wurdemanni ( Gibbes, 1850)

Hippolyte Wurdemanni Gibbes, 1850: 197 .

Hippolysmata (H.) wurdemanni— Coelho & Ramos 1972: 153 [partim, Paraíba record = L. moorei ].

Lysmata wurdemanni— Chace 1972: 129 [partim, São Paulo material in remarks = L. bahia ]; Ramos-Porto & Coelho 1993: 186 [partim?]; Coelho et al. 2006: 1221, table 3 [partim?]; Terossi et al. 2018: 84, figs. 2C–D; Gurjão & Lotufo 2018: 9 (table 2).

Not Hippolysmata wurdemanni — Rathbun 1900: 153 [= L. moorei ]

Not Hippolysmata (H.) wurdemanni— Fausto Filho 1970: 56 [= L. bahia ].

Not Lysmata wurdemanni — Christoffersen 1980: 228 [possibly L. ankeri + L. bahia ].

Material examined. None.

First record for Brazil: São Paulo ( Terossi et al. 2018).

Distribution: Western Atlantic: USA (New York to Florida and Texas) and Brazil (São Paulo, Pernambuco?) ( Rhyne & Lin 2006; Coelho et al. 2006; Terossi et al. 2018) ( Fig. 16 ).

Ecology. Typically on hard and mixed bottoms, such as rocky reefs and fossilised reefs with abundance of caves and other shelters, depth range: intertidal to 35 m ( Rhyne & Lin 2006; Terossi et al. 2018).

Remarks: In the revision of the L. wurdemanni species complex, all previous Brazilian records of L. wurdemanni were assigned to either L. ankeri or L. bahia , with L. wurdemanni presumed not to occur in Brazil ( Rhyne & Lin 2006). However, recently collected material from Ubatuba, São Paulo, confirmed that L. wurdemanni actually occurs in the southwestern Atlantic ( Terossi et al. 2018; see also Fig. 16 ). The specimens from Ubatuba match the specimens from the southeastern USA morphologically, genetically and in their colour pattern ( Terossi et al. 2018: fig. 2C, D). It is possible that in Brazil, L. wurdemanni occurs in deeper water (35 m) compared to the populations in the southeastern USA (1–15 m), and that the species will be eventually found north of São Paulo.

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material dorsal teeth ventral subdivisions subdivisions number of number of number of (including teeth spiniform spiniform spiniform post-orbital) setae setae setae

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Coelho et al. (2006) listed L. wurdemanni from Ceará, Paraíba and Pernambuco based on older literature records (e.g., Rathbun 1900) and material deposited in the collection of the Universidade Federal de Pernambuco, Recife, Brazil (UFPE). However, Rathbun’s material from Paraíba was already re-assigned to L. moorei by Chace (1972), whilst material from Ceará was recently re-identified as L. bahia ( Pachelle et al. 2016) . The record of L. wurdemanni from Pernambuco in Coelho et al. (2016) still needs confirmation.

Recently, Baeza & Prakash (2019) showed that the northwestern Atlantic populations of L. wurdemanni are genetically sub-structured (based on their 16S RNA analysis), forming four major clades, some of them containing several more, smaller sub-clades. Only one of these clades, e.g., the Virginia clade, was also defined geographically, i.e. all terminals in this clade were from Virginia. All other major clades had representatives from various localities, e.g. the Florida clade had a few specimens from Texas and North Carolina, the Texas clade had one specimen from Tampa Bay, etc. The authors argued that because of the deep genetic divergence between the major clades, L. wurdemanni probably represents a complex of cryptic species. The complex distribution of these putative complex species may be explained by isolation followed by migration and incomplete lineage sorting. Since no material from Brazil was included in Baeza & Prakash’s (2019) analyses, the identity of the Brazilian specimens morphologically referable to L. wurdemanni remains unknown.

Figures

FIGURE 16. Distribution map for 11 species of Lysmata Risso, 1816 currently known from the Brazilian coast and offshore islands. Abbreviations: Alagoas (AL), Amapá (AP), Atol das Rocas (AR), Bahia (BA), Ceará (CE), Espírito Santo (ES), Maranhão (MA), Pará (PA), Paraíba (PB), Paraná (PR), Pernambuco (PE), Piauí (PI), Rio Grande do Norte (RN), Rio Grande do Sul (RS), Rio de Janeiro (RJ), Santa Catarina (SC), São Paulo (SP), São Pedro e São Paulo (SPSP), Sergipe (SE), Trindade e Martim Vaz (TMV).