taxonID	type	description	language	source
03F387A18B1EFFAAFC37A15DBA09CBE5.taxon	description	(Figures 1 A – D; 2 A – F)	en	Ferreira, Luciane Augusto de Azevedo, Tavares, Marcos (2020): The rare porcelain crab Novorostrum decorocrus Osawa, 1998 (Anomura: Porcellanidae) from Indonesia. Nauplius (e 2020007) 28: 1-5, DOI: 10.1590/2358-2936e2020007, URL: http://dx.doi.org/10.1590/2358-2936e2020007
03F387A18B1EFFAAFC37A15DBA09CBE5.taxon	materials_examined	Material examined. 1 male cl 3.0 mm, cw 3.0 mm, MZUSP (40088), Tial, Ambon, Indonesia, 9 September 1991, intertidal zone, D. L. Rahayu coll. and don.; 1 ovigerous female cl 4.3 mm, cw 4.3 mm (MZUSP 40089), same data.	en	Ferreira, Luciane Augusto de Azevedo, Tavares, Marcos (2020): The rare porcelain crab Novorostrum decorocrus Osawa, 1998 (Anomura: Porcellanidae) from Indonesia. Nauplius (e 2020007) 28: 1-5, DOI: 10.1590/2358-2936e2020007, URL: http://dx.doi.org/10.1590/2358-2936e2020007
03F387A18B1EFFAAFC37A15DBA09CBE5.taxon	distribution	Distribution. Japan (Iriomote Island, Ryukyu Islands) and Indonesia (Tial, Ambon Island) (Osawa, 1998; present study).	en	Ferreira, Luciane Augusto de Azevedo, Tavares, Marcos (2020): The rare porcelain crab Novorostrum decorocrus Osawa, 1998 (Anomura: Porcellanidae) from Indonesia. Nauplius (e 2020007) 28: 1-5, DOI: 10.1590/2358-2936e2020007, URL: http://dx.doi.org/10.1590/2358-2936e2020007
03F387A18B1EFFAAFC37A15DBA09CBE5.taxon	discussion	Remarks. The Indonesian specimens agree well with Novorostrum decorocrus from the Ryukyu Islands as described and illustrated by Osawa (1998): (i) cheliped propodus bluntly toothed along the extensor margin, and with a weak crenulated longitudinal ridge adjacent to the extensor margin on the dorsal surface (Figs. 1 B; 2 B, E); (ii) cheliped carpus with several, small, acute or blunt teeth on the dorsal flexor margin (Figs. 1 B; 2 B, E); and (iii) propodus and carpus of P 2 – P 4 (ambulatory legs) bluntly toothed on the extensor margins (Figs. 1 C; 2 C, F). In these respects, N. decorocrus differs markedly from N. indicum, N. securiger, and N. phuketense, whose chelipeds have no teeth along the extensor margins of the propodi, as well as no small teeth on the dorsal flexor margins exclusive of a broad, blunt proximal lobe; and the propodus and carpus of P 2 – P 4 lack blunt teeth on the extensor margins (Osawa, 1998; Osawa and Chan, 2010). Novorostrum decorocrus further differs from N. indicum in having the carapace subtrapezoidal in dorsal view (Figs. 1 A; 2 A, D), rather than broadly subtriangular with narrower front. Female and male (MZUSP 40089, 40088) of N. decorocrus differ from each other in that the cheliped palm of the female has more distinct longitudinal ridges and concavities along the dorsal midline than that of the male, as also noticed by Osawa (1998). In addition, the female differs from the male in having the carapace surface more strongly uneven with deeper longitudinal grooves, the front more strongly trilobate, with the median lobe more distinctly produced than the lateral lobes (Figs. 1 A; 2 A), and the ambulatory legs with more pronounced rugae and tubercles on the lateral surfaces (Figs. 1 C; 2 C). Fujita and Osawa (2005) estimated 12 – 14 days as the planktonic period of the zoeal phase of N. decorocrus under laboratory conditions, at a water temperature of 28.0 ° C – 28.5 ° C, and offered for consideration that the distribution range of N. decorocrus could possibly be wider than known at that time. The present record of N. decorocrus from much farther south (Ambon Island, Indonesia) than its type locality in southern Japan, provides empirical support to Fujita and Osawa’s (2005) proposition.	en	Ferreira, Luciane Augusto de Azevedo, Tavares, Marcos (2020): The rare porcelain crab Novorostrum decorocrus Osawa, 1998 (Anomura: Porcellanidae) from Indonesia. Nauplius (e 2020007) 28: 1-5, DOI: 10.1590/2358-2936e2020007, URL: http://dx.doi.org/10.1590/2358-2936e2020007
