Raoulia fortis Ng & Rahayu 2014
- Dataset
- Revision of the family Acidopsidae Števčić, 2005, and the systematic position of Typhlocarcinodes Alcock, 1900, Caecopilumnus Borradaile, 1902, and Raoulia Ng, 1987, with descriptions of two new genera and five new species (Crustacea: Brachyura: Goneplacoidea)
- Rank
- SPECIES
- Published in
- Ng, Peter K. L., Rahayu, Dwi Listyo (2014): Revision of the family Acidopsidae Števčić, 2005, and the systematic position of Typhlocarcinodes Alcock, 1900, Caecopilumnus Borradaile, 1902, and Raoulia Ng, 1987, with descriptions of two new genera and five new species (Crustacea: Brachyura: Goneplacoidea). Zootaxa 3773 (1): 1-63, DOI: 10.11646/zootaxa.3773.1.1
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Decapoda
- family
- Chasmocarcinidae
- genus
- Raoulia
- species
- Raoulia fortis
description
(Figs. 1 G, H, 5 F, 6 C, 20, 21, 41 A)
diagnosis
Diagnosis. Carapace width 1.3 times length (20 A). Junction between frontal and supraorbital margins appears gently curved in frontal view (Fig. 20 C). Third maxilliped with merus short, about half length of ischium; ischium quadrate, 1.1 times longer than broad (Figs. 5 F, 21 B). Ambulatory legs short; merus of last ambulatory leg 2.8 times as long as broad (Fig. 20 A). G 1 distal half slender, gently curved, with few small subdistal spinules, distal part tapering (Fig. 21 C – F). Colour. In life, the carapace and pereopods of the type specimen are cream coloured, with patches of brown, and the setae reddish-brown (Fig. 41 A).
discussion
Remarks. This new species differs from the congeners in having a relatively stouter G 1 that is only gently curving and smaller spinules on the subdistal surfaces (Fig. 21 C – F). The other species have more strongly curved G 1 s (Figs. 16 D – G, 19 H – K, 23 C – F). The carapace and third maxilliped proportions of R. fortis sp. nov. and R. galea sp. nov. are similar, but the merus of the third maxilliped of R. fortis sp. nov. is more rounded, with the anterolateral margin more strongly convex (Figs. 5 F, 21 B) (more subovate, with the anterolateral margin only gently convex in R. galea sp. nov., Figs. 5 E, 19 G). Balss’ (1938) record of Typhlocarcinodes piroculatus ” from the Gilbert Is. (= Kiribati) in the western Pacific was on the basis of a female specimen measuring 11.3 × 9.3 mm (no figure provided). It is probably also referable to the present new species, at least on the basis of geography.
distribution
Distribution. Gilbert Is. (= Kiribati) and Vanuatu; 12 m.
etymology
Etymology. The name is derived from fortis, Latin for “ strong ” and “ stout, ” alluding to the large size of the type specimen.
materials_examined
Material examined. Holotype: male (12.0 × 9.2 mm) (MNHN), station DB 8, east Aoré I., Santo, Vanuatu, 15 ° 34.6 ' S 167 ° 13.8 ' E, sandy patches, 12 m, coll. SANTO Expedition, 1 September 2006.
Name
- Synonyms
- Typhlocarcinodes piroculatus Serene 1964
- Homonyms
- Raoulia fortis Ng & Rahayu 2014