Tuleariocaris neglecta Chace, 1969

Tavares, Marcos & Júnior, Joel Braga de Mendonça, 2022, Tuleariocaris neglecta Chace, 1969 (Crustacea: Caridea: Palaemonidae) associated with the sea urchin Astropyga magnifica Clark, 1934 (Echinoidea: Diadematidae) in the Alcatraz Archipelago, southeastern Brazil, Papéis Avulsos de Zoologia 62, pp. 1-4 : 1-2

Tuleariocaris neglecta Chace, 1969

( Fig. 1 A-C)

Material examined: 1 female, pcl 27 mm ( MZUSP 41663),Trindade Island,Ilha da Racha, 20°30′26.5″S,

29°20′48.0″W, J.B. MendonÇa coll., 30.vii.2018, 23 m, associated with Diadema ascensionis . 1 female, pcl 25 mm ( MZUSP 42515), Alcatraz Archipelago, 24°5′53.10″S, 45°41′18.56″W, V.J.G. Fernandes coll., 15.xii.2019, 7.5 m, associated with Astropyga magnifica Clark.

Remarks: The single female of T. neglecta from Alcatraz agrees well with the descriptions and illustrations of Chace (1969), and also displays all distinguishing characters of the species provided by Berggren (1994).The dorsal surface of the rostrum of the Alcatraz female is armed with 8 dorsal teeth (range: 7-11 teeth); the ventral surface of the rostrum is unarmed,whereas it usually bears 1 to 4 minute teeth ( Chace, 1969); and the distolateral lobe of the first antennular article is armed with 4 well-developed spines (range: 2-4) ( Fig. 1B, C ).

In Alcatraz, T. neglecta was found in association with the sea urchin Astropyga magnifica , although D. antillarum , its more typical host, is also known to occur in this archipelago (A. Migotto pers. comm.). In Trindade, males and females (several ovigerous) were all found in association with D. ascensionis ( Martins et al., 2016; Tavares et al., 2017) ( Table 1), whereas the urchin host for the single male and the two ovigerous females from Salvador was not recorded.

Figures

Figure 1. (A-C) Tuleariocaris neglecta Chace, 1969. (A) female, pcl 27 mm (MZUSP 41663). Trindade Island, associated with the sea urchin Diadema ascensionis Mortensen,1909.Photograph by André Pol. B, C Female, pcl 25 mm (MZUSP 42515). Alcatraz Archipelago,off São Paulo,associated with Astropyga magnifica Clark, 1934.(B,C)Anteriorpart ofbody,lateral anddorsal views,respectively.Setaeand dorso-rostralteethomitted.Dorsalleft sidenotrepresented in(C).Scales:B,C,1mm.