Petrolisthes ortmanni Nobili, 1901

Ferreira, Luciane Augusto De Azevedo & Anker, Arthur, 2021, An annotated and illustrated checklist of the porcelain crabs of Panama (Decapoda: Anomura), Zootaxa 5045 (1), pp. 1-154 : 107-111

Petrolisthes ortmanni Nobili, 1901

( Fig. 68 )

Petrolisthes ortmanni Nobili, 1901: 16 ; Haig 1960: 112, pl. 23, fig. 3; Haig 1968: 66; Gore 1982: 18; Werding & Haig 1982: 68; Lazarus-Agudelo & Cantera-Kintz 2007: 230; García-Madrigal & Andréu-Sánchez 2009: 37, fig. 4E; Moscoso 2012: 81; Ferreira et al. 2020: 585, fig. 8C.

Material examined. Panama [Pacific]: 1 male, cl 4.3, cw 4.1 ( FLMNH UF 57716 ), Coiba Is ., Isla Uva , 7°48’53.5”N, 81°45’39.7”W, large bay on west-northwest side, rocky shore and adjacent subtidal flats with rocks and rubble, under rocks, leg. M. Leray et al., 21.02.2019 (fcn PAN-212); 1 female, cl 4.3, cw 4.3 ( FLMNH UF 57717 ), Coiba Is., northwest coast of Isla Coiba , small rocky island off Bahía de Santa Cruz, 7°37’50.2”N, 81°46’51.2”W / 7°37’52.0”N, 81°461’50.9”W, exposed rocky shore, under rocks and in rock crevices, leg. M. Leray et al., 22.02.2019 (fcn PAN-219); 1 ov. female, cl 4.3, cw 4.4 ( MZUSP 33475 ), Las Perlas Is ., Isla Contadora, north end of Playa Larga, rocky shore with large boulders exposed at low tide, under rocks and in rock crevices, leg. A. Anker, J. Luque, A.R. Palmer & T. Kaji, 15.04.2015; 1 ov. female, cl 6.0, cw 6.4 ( MZUSP 33808 ), Las Perlas Is., small rocky island off north-eastern coast of Isla Saboga, depth at low tide 0–1.5 m, under rocks, in dead and living corals, leg. A. Anker, J. Luque, A.R. Palmer & T. Kaji, 22.04.2015; 1 female, cl 4.2, cw 4.1 ( FLMNH UF 57157 ), Las Perlas Is ., Isla Saboga , 8°37’42.4”N, 79°03’24.4”W, small rocky-sandy island in front of Saboga village, rocky shore exposed at low tide, under rocks, leg. P.P.G. Pachelle & M. Leray, 23.03.2019 (fcn PP 19-071). Extra-limital material . Colombia [Pacific]: 1 male, cl 4.5, cw 4.8, CRBM-UV-cr:2009-101, Los Negritos off Bahía Málaga, 03°53’47.6”N, 77°24’09.3”W, rocky offshore outcrops, piles of large granitic boulders, some cemented with sponges, under rock on coarse sand, 0–1 m, leg. A. Anker, 27.04.2009 (fcn COL-230) .

Previous records from Panama. Haig (1957, 1960).

Distribution. East Pacific: Mexico, Costa Rica, Panama (Coiba Is., Secas Is., Jicarita I., Las Perlas Is., Amador Causeway near Ciudad de Panamá), Colombia, Ecuador and Peru ( Haig 1960, 1968; García-Madrigal & Andréu- Sánchez 2009; Moscoso 2012; present study).

Ecology. Intertidal and shallow subtidal, known depth range: 0–7 m; under rocks, in crevices of rocks and corals, sometimes associated with hermit crabs, Aniculus elegans Stimpson ( Haig 1960; García-Madrigal & Andréu- Sánchez 2009; Moscoso 2012).

Remarks. In all Panamanian specimens of P. ortmanni ( Fig. 68 ), the carapace and P1 varies from pale brownish to yellowish, whereas the P2–P4 are always darker brown. In some younger individuals from Colombia, the P1 are paler and speckled with dark spots ( Ferreira et al. 2020). The specimen illustrated by García-Madrigal & Andréu- Sánchez (2009) was photographed either post-mortem or shortly after preservation and lost most of its original colours.

Figures

FIGURE 68. Petrolisthes ortmanni Nobili, 1901: A, B, ovigerous female (cl 6.0 mm, cw 6.4 mm) from Las Perlas Islands, Panama (MZUSP 33808), dorsal (A) and ventral (B) views [photographs by AA]; C, female (cl 4.2 mm, cw 4.1 mm) from the same locality (FLMNH UF 57157), dorsal view [photograph courtesy of Paulo P.G. Pachelle].