Latreillia valida De Haan, 1839

Muñoz, Isabel, García-Isarch, Eva & Cuesta, Jose A., 2021, Annotated and updated checklist of marine crabs (Decapoda: Brachyura) of Mozambique supported by morphological and molecular data from shelf and slope species of the “ MOZAMBIQUE ” surveys, Zootaxa 5056 (1), pp. 1-67 : 16

Latreillia valida De Haan, 1839 [in De Haan, 1833 -1850]

( Figure 2F )

Material examined. M09, Stn. 46, 212m, ♂ 11.2× 18.5mm (IEO-CD-MZ09/1779-1), 16S ( MZ 424917 ) , COI ( MZ 434764 ) ; ♀ ov 10.9× 17.6mm (IEO-CD-MZ09/1779-2), 16S ( MZ 424918 ) , COI ( MZ 434765 ) .

Habitat and distribution. WIO, from South Africa and Madagascar, to Western Australia and Western Pacific Ocean, from Japan to as far east as Tonga. The depth range recorded for the species is 30–898m ( Castro 2013), while in Mozambican waters is 112–898m according to Castro (2013) and 30–731m according to Emmerson (2016b,c).

Results and remarks. Two specimens, one male and one ovigerous female, were collected at the same station in March 2009 (M09), at 212m depth. These individuals were damaged, with some broken legs. Our specimens agree well with the descriptions and figures in Castro et al. (2003).

Colouration observed. The carapace was almost transparent, with certain orange tone, covered with longitudinal red lines and another wider and complete red line, which borders all its posterior edge. Transverse red bands were along the ambulatory legs, being not uniform and little marked.

DNA barcodes. 16S and COI sequences of both specimens are equal in 412 and 636 bp, respectively. 16S and COI sequences fit 99.28% (only differ in one mutation) and 99.69% (differing in two mutations), respectively, with the sequences of L. valida ( MK 204361 ), a mitochondrial complete genome obtained by Bao et al. (2019).

Superfamily RANINOIDEA De Haan, 1839 [in De Haan, 1833 –1850]

There is some confusion regarding the taxonomic status of Superfamily Raninoidea . Some authors and web platforms consider it to comprise two families, Raninidae De Haan , and Lyreididae Guinot ( Davie et al. 2015a) , while others consider the Lyreididae as a subfamily, Lyreidinae , within the Raninidae as Ribes (1989), Emmerson (2016b,c), and WORMS (2021). In this work we have followed the more recent classification by Davie et al. (2015a), considering Raninidae and Lyreididae as two independent families.

Family LYREIDIDAE Guinot, 1993

According to Davie et al. (2015a), this family includes two genera ( Lyreidus De Haan and Lysirude Goeke ) and six species. These species, known as “frog crabs”, are mainly distributed in warm and tropical waters of the Atlantic and IWP (Poor 2004). Only Lyreidus brevifrons Sakai has been cited in Mozambique waters ( Emmerson 2016b,c). A Lyreidus sp. was also reported for Mozambique by Emmerson in his checklist.

Figures

FIGURE2.A,Homolodromiabouvieri,♀ IEO-CD-MZ08/1801;B,Homola orientalis,♂IEO-CD-MZ09/1806;C,Homolochunia valdiviae, ♀ IEO-CD-MZ09/1805; D, Moloha alcocki, ♀ IEO-CD-MZ09/1793;E, Paromolopsis boasi, ♀ IEO-CD-MOZ08/1827; F, Latreilla metanessa, ♀ IEO-CD-MZ09/1810; G, Latreilla valida, ♀ IEO-CD-MZ09/1779. Scale bars: 1cm.