Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean Author In, First Published text Zootaxa 2022 2022-06-02 5146 1 129 journal article 10.11646/zootaxa.5146.1.1 1175­5334 7626155 52C3E5E3-80B6-49DB-BC9C-194560D491F7 Kroppcarcinus siderastreicola Badaro, Neves, Castro & Johnsson, 2012 ( Figs. 43A–E , 44B, E ) Kroppcarcinus siderastreicola Badaro et al. , 2012: 520 . Trindade and Martin Vaz specimens. 1 ovigerous female ( MZUSP 40212 ), 1 ovigerous female ( MZUSP 40219 ), Brazil , off Espírito Santo , Trindade Island , Enseada da Cachoeira , Farrilhões , 2031’29.8’S, 2919’52.0” W, J.B. Mendonça coll., 21.xi.2017 , 11.3 m , associated with Siderastrea . 1 male , 2 ovigeous females ( MZUSP 40813 ), ibidem , 4.iv.2014 , 12.2 m , associated with Siderastrea . 1 male , 1 ovigerous female, 1 female parasitized by Rhizocephala ( MZUSP 39589 ), ibidem , Praia do M, 20º30’53.8”S , 29º20’19.2”W , J.B. Mendonça coll. , 8.vii.2013 , 15 m , associated with Siderastrea . 1 male , 1 female ( MZUSP 40794 ), 1 male ( MZUSP 39599 ), 1 ovigerous female ( MZUSP 39867 ), ibidem , Praia dos Portugueses , Rampa Nova , 20º30’17.7’’S , 29º18’56.7”W , J.B. Mendonça coll. , 23.iv.2014 , 10.7 m , associated with Siderastrea . 1 male , 1 female ( MZUSP 40388 ), ibidem , Ponta da Calheta , 20º30’18.72’’S , 29º18’31.6”W , J.B. Mendonça coll. , 9.vii.2015 , 16.3 m . 1 male , 1 female ( MZUSP 39595 ), ibidem , Praia da Calheta , 20º30’29.5’’S , 29º18’37.0”W , J.B. Mendonça coll. , 21.vi.2016 , 12.5 m , associated with Siderastrea . 2 males , 2 ovigerous female ( MZUSP 40802 ), ibidem , Enseada das Orelhas , 20º29’40.2’’S , 29º20’32.9”W , J.B. Mendonça coll. , 1.vii.2016 , 9.2 m , associated with Siderastrea . 1 male , 1 female ( MZUSP 39590 ), ibidem , 6.vii.2013 , 14 m , associated with Siderastrea . 1 male , 2 ovigerous females, 1 juvenile female ( MZUSP 40817 ), ibidem , Ponta Norte , 20º29’18.7’’S , 29º20’18.3”W , J.B. Mendonça coll. , 18.vii.2013 , 13.9 m , associated with Siderastrea . 1 male , 1 ovigerous female, ( MZUSP 40819 ), ibidem , Ilha Sul , 20º31’34.3’’S , 29º19’27.9”W , J.B. Mendonça coll. , 10.vii.2015 , 22.2 m , associated with Siderastrea . 1 male , 1 female ( MZUSP 40792 ), ibidem , 21.x.2014 , 17.8 m , associated with Siderastrea . 1 male , 1 female ( MZUSP 39586 ), 1 male ( MZUSP 39587 ), 1 male , 1 female ( MZUSP 40774 ), ibidem , Ilha da Racha , 20º30’26.5’’S , 29º20’48.0”W , J.B. Mendonça coll. , 16.vii.2013 , 20.8 m , associated with Siderastrea . 3 males , 1 female ( MZUSP 40822 ), ibidem , Parcel das Tartarugas , 20º31’11.86’’S , 29º18’0.6”W , J.B. Mendonça coll. , 3.ii.2019 , intertidal, 1.0 m, associated with Siderastrea . 1 male , 2 females ( MZUSP 40787 ), ibidem , Praia das Tartarugas , 20º31’01.3’’S , 29º17’56.9”W , J.B. Mendonça coll. , 12.vii.2013 , intertidal, 10.8 m , associated with Siderastrea . 1 male ( MZUSP 42513 ) Enseada da Cachoeira , Farrilhões , 20º31’26.67’’S , 29º19’55.94’’W , J.B. Mendonça coll. , 22.vi.2019 , 13.6 m , associated with Montastraea cavernosa . 1 male , 3 females ( MZUSP 40778 ), ibidem , Ponta do Monumento , 20º30’10.3’’S , 29º20’36.1’’W , J.B. Mendonça coll. , 2.xi.2014 , 15 m . 1 male , 2 females ( MZUSP 40777 ), ibidem , 2.iv.2014 , 8.4 m , associated with Siderastrea . 1 male , 3 females ( MZUSP 40385 ), ibidem , Praia do Lixo , 2031’29.8’S, 2919’43.9” W, J.B. Mendonça coll. , 15.vii.2013 , 17 m , associated with Siderastrea . 1 male , 1 female ( MZUSP 40795 ), ibidem , Ponta Norte , Crista do Galo , 20º29’14.84’’S , 29º20’13.95”W , J.B. Mendonça coll. , 21.v.2014 , 15 m , associated with Siderastrea . 1 male ( MZUSP 39591 ), 1 male , 4 females ( MZUSP 40821 ), Martin Vaz Archipelago , 20º30’45.7’’S , 29º18’21.9”W , J.B. Mendonça coll. 23.vii.2013 , 13 m , associated with Siderastrea . Size of largest male: cl 2.5 mm , cw 2 mm ; largest female: cl 2.9 mm , cw 2.1 mm . Comparative material examined. Kroppcarcinus siderastreicola : Brazil : Paraíba : 3 females (2 ovigerous) , 1 male ( MZUSP 6089 ) , Tambaú, Quebra-Quilha Reef, P. Young coll. 4.i.1983 , associated with the scleractini- an coral Siderastrea . 3 females ( MZUSP 6090 ) , 2 females (1 ovigerous) ( MZUSP 6094 ) , 1 ovigerous female, 1 male ( MZUSP 6088 ) , ibidem , P. Young coll., 20.viii.1982 , associated with Siderastrea . 3 ovigerous females, 1 male ( MZUSP 6086 ) , ibidem , P. Young coll., 17.xi.1982 , associated with Siderastrea . 1 male , 2 ovigerous females ( MZUSP 6092 ) , 2 ovigerous females ( MZUSP 6093 ) , ibidem , P. Young coll., 4.i.1983 , associated with Siderastrea . 2 females ( MZUSP 6087 ) , Tambaú, Picãozinho Reef, P. Young coll., 6.vii.1982 , associated with Siderastrea . Bahia : 1 male , 2 females (1 ovigerous) ( MZUSP 40797 ) , 13º37.653’’S, 38º53.475’’W, Morer, Boipeba, M. Tavares and J.B. Mendonça coll., 2.iii.2013 , 3 m , associated with Siderastrea . Distribution. Florida Keys ( Klompmaker et al. 2016 ), Curaçao ( Meij 2014a ) and Brazil ( Paraíba , Bahia ) ( Badaro et al. 2012 ; Nogueira et al. 2014 ; this tudy). This is the first record of K. siderastreicola from farther north on the Brazilian coast ( Paraíba ) and from the Trindade and Martin Vaz Archipelago. Ecological notes. Kroppcarcinus siderastreicola was previously only known as an obligate symbiont of the stony corals Siderastrea stellata Verril , S. siderea (Ellis & Solander) and Stephanocoenia interscepta (Esper) (Barado et al. 2012; Nogueira et al. 2014 ; Meij 2014a ; Klompmaler et al. 2016), usually in shallow depths although hosts are also available at greater depths ( Tienderen & Meij 2016 ). It is recorded here for the first time with Montastraea cavernosa (Linnaeus) as a new host. Males are smaller than females ( Fig. 43A–E ), commonly one pair per coral colony, each crab in its own pit (Trindade). The crabs produce or induce crescent-shaped chambers or pits in the coral host ( Fig. 43F ), but other domicile morphologies can be created ( Nogueira et al. 2014 ). The potential for suspension feeding by the plumose setae of the third maxillipeds has been suggested by Nogueira et al. (2014) . The females from Trindade carry few very large eggs. The female MZUSP 39589 was parasitized by a rhizocephalan. Apparently, rhizocephalans parasitizing gall crabs are rare and such a symbiosis has been described only recently ( Boyko & Meij 2020 ). Remarks. Kropp (1990) reported that the Cryptochiridae from the Pacific Ocean may have the P3–P5 coxae provided with a forward directed anterior lobe (reduced or absent in some genera). In the male and female Kroppcarcinus siderastreicola the coxae of P2–P5 are likewise provided with a well-developed anterior lobe, somewhat less developed in the P2 coxa.