Lysmata lipkei Okuno & Fiedler, 2010

Lysmata lipkei Okuno & Fiedler, 2010

( Figs. 1A View FIGURE 1 , 2 View FIGURE 2 )

Lysmata lipkei Okuno & Fiedler, 2010: 599 , figs. 1–4. Lysmata lipkei — De Grave et al. 2012: 97 View Cited Treatment , fig. 2C; Pachelle et al. 2016: 17 View Cited Treatment , figs. 10–12; Anker & De Grave, 2016: 402, figs. 66, 68.

Material examined. Brazil, Sergipe: 1 hermaphrodite ( MZUSP 37415 View Materials ), Aracaju, Orla do Mosqueiro , D.F.R. Alves coll., i.2016 ; 2 hermaphrodites ( MZUSP 37417 View Materials ), same collection data, 10.x.2016 ; 5 hermaphrodites ( MZUSP 37416 View Materials ), Aracaju, Orla do Sol , D.F.R. Alves coll., 03.iv.2017 ; 1 hermaphrodite ( MZUSP 37513 View Materials ), Orla do Mosqueiro , D.F.R. Alves coll., i.2017 .

Additional material. Brazil, Ceará: 4 hermaphrodites, 1 ovigerous hermaphrodite, MZUSP 33744 View Materials , Icapuí, Praia de Ponta Grossa , rocky intertidal, under rocks in tide pools, C.B. Mendes et al. coll., 09.ix.2014 . Rio Grande do Norte: 1 hermaphrodite, MZUSP 29788 View Materials , Areia Branca, Praia de Baixa Grande , 04°55’45”S, 37°05’06”W, rocky intertidal, under rocks in tide pools, P.P.G. Pachelle coll., 23.vii.2013 [fcn PP 13-021]; 1 ovigerous hermaphrodite, MZUSP 29789 View Materials , same collection data [fcn PP 13-022] GoogleMaps .

Distribution. Western Pacific and Indo-Pacific: Southern Japan (Ryukyu Islands) and Singapore ( Anker & De Grave 2016). Western Atlantic: Brazil ( Ceará, Rio Grande do Norte, and Sergipe) ( Pachelle et al. 2016; present study).

Morphological variation. Straight rostrum, reaching the distal margin of the second article of the antennular peduncle ( Fig. 2A,B View FIGURE 2 ). Rostrum with 5–7 dorsal teeth (predominantly 6) and 2–4 ventral teeth (predominantly 3) ( Fig. 2A,B View FIGURE 2 ). Antennular peduncle with one minute spinule on the third article ( Fig. 2C View FIGURE 2 ). Antennular flagellum with short accessory branch, with an unguiform shape ( Fig. 2C View FIGURE 2 ). Ischium of the second pereiopod with clearly visible articles ( Fig. 2D, E View FIGURE 2 ). Merus of the second pereiopod subdivided into 16–25 articles ( Fig. 2D,E View FIGURE 2 ), with an unusual range of variation in L. lipkei (see Table 2), and the lowest numbers of articles (16 and 17) recorded in the smallest specimens ( 2.6 mm and 3.6 mm, respectively). Carpus of the second pereiopod subdivided into 26–31 articles ( Fig. 2D,E View FIGURE 2 ). Left second pereiopod longer and larger than the right ( Fig. 2D,E View FIGURE 2 ). Each segment of the left second pereiopod 1.2–1.3 times longer than the respective segment of the right ( Fig. 2D,E View FIGURE 2 ). Merus of the fourth pereiopod with 3–5 spiniform setae ( Fig. 2F View FIGURE 2 ). Dactylus of the fourth pereiopod biunguiculate, with tufts of setae on the terminal margin, armed with 3 spines on the flexor margin ( Fig. 2G View FIGURE 2 ).