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Introduction
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January 1957 - present
Position
- Professor (Full)
Description
- Taxonomy and phylogeny of Brachyura
Publications
Publications (207)
Validation of Tanidromites maerteni Fraaije, Van Bakel, Guinot & Jagt, a species
of crab (Crustacea, Decapoda, Brachyura) from Middle Jurassic (Bajocian)
deposits of Maizet, Calvados, northwest France
A new and revised classification of the small family Dorippidae H. Milne Edwards, 1837, which previously comprised two distinct subfamilies (Dorippinae H. Milne Edwards, 1837 and Ethusinae Guinot, 1977), each of which was subsequently elevated to a familial rank supported by traditional data and genetic phylogenies, is presented on the basis of a m...
Maximum likelihood and Bayesian phylogenies for the brachyuran crab superfamily Xanthoidea were estimated based on three mitochondrial and four nuclear genes to infer phylogenetic relationships and inform taxonomy. Habitat data was then used in conjunction with several diversification rates analyses (BAMM, BiSSE, HiSSE, and FiSSE) to test evolution...
The Japanese spider crab, Macrocheira kaempferi (Temminck, 1836), the largest living arthropod in the world, was originally placed in the family Majidae Samouelle, 1819 as a monotypic subfamily, Macrocheirinae Dana, 1851. While various authors have treated the taxon as belonging to its own superfamily, family, subfamily, or even tribe, the consensu...
Gérard Breton, born in Le Havre on 20 April 1944, brilliant scientist of international stature, associate paleontologist at Géosciences Rennes for many years, passed away on 3 April 2020. This special issue is dedicated to him as a tribute to his work and mastery, with a compilation of papers on some topics related to his ample research experience.
The taxonomy of the pilumnoid genus ParapanopeDe Man, 1895 is revisited and two new species are recognised. With a better series of specimens, more differences between the type species, P. euagoraDe Man, 1895 (from Java), and the morphologically similar P. hextii (Alcock, 1898) (from India) are documented. Specimens previously identified as P. euag...
The raninid genus Cyrtorhina Monod, 1956, is revised and restricted to Cyrtorhina granulosa Monod, 1956, from West Africa. A new genus, Flaberhina, is established for C. balabacensis Serène, 1971 from the Philippines and New Caledonia. Despite their superficial similarities, the two genera can easily be separated by the structures of the carapace,...
A new genus and species, Richerius marqueti gen. et sp. nov., of a crab of the family Hymenosomatidae MacLeay, 1838 are described from the inland waters of New Caledonia based on several specimens collected in two streams at altitudes of 180 m and 500 m, respectively. Richerius marqueti gen. et sp. nov. was compared to the other freshwater species...
The name for the brachyuran subfamily Dasygyiinae Holmes, 1900, recently recognised by Guinot & Van Bakel (2020) in the majoid family Inachoididae Dana, 1851, cannot be used as it is a junior synonym of Collodinae Stimpson, 1871. The present note diagnoses a new name, Paradasygyiinae subfam. nov., for the monotypic genus Paradasygyius Garth, 1958.
A rare small species, Esopus crassus A. Milne-Edwards, 1875, recently collected by KARUBENTHOS Expedition 2015 in Guadeloupe, is re-examined. The genus Esopus A. Milne-Edwards, 1875, currently included in the Epialtidae MacLeay, 1838, must be assigned to the Inachoididae Dana, 1851, a rather basal family within the Majoidea Samouelle, 1819, but dev...
The podotreme brachyuran subfamily Cyrtorhinae was established by Guinot (1993) for Cyrtorhina Monod, 1956, an unusual raninid genus from the Atlantic and Western Pacific. Although the family-group name has been accepted and used widely, it is not available for nomenclatural purposes. The present note serves to validate the name Cyrtorhininae.
All Jurassic brachyuran taxa known to date are based solely upon dorsal carapaces, and only a limited number of Early and mid-Cretaceous crabs retain ventral parts. Therefore, all Jurassic taxa and many forms from the first half of the Cretaceous are carapace-based entities. All of them are considered to be “dromiaceans”, podotremes to be precise....
ABSTRACT
All Jurassic brachyuran taxa known to date are based solely upon dorsal carapaces, and only a limited number of Early and mid-Cretaceous crabs retain ventral parts. Therefore, all Jurassic taxa and many forms from the first half of the Cretaceous are carapace-based entities. All of them are considered to be “dromiaceans”, podotremes to be...
A small brachyuran crab, Archaeochiapasa mardoqueoi n. gen., n. sp., is reported from the lower Cenomanian (Upper Cretaceous) of the Sierra Madre Formation at El Chango Lagerstätte, Chiapas State, southeastern Mexico. Although it is decorticated and only the counterpart keeps a large part of the cuticle, the single male specimen exhibits an excepti...
An annotated catalogue of the type specimens of two thoracotreme crab families, Gecarcinidae H. Milne Edwards, 1837 and Grapsidae MacLeay, 1838 (Crustacea, Decapoda, Brachyura, Thoracotremata, Grapsoidea) deposited in the collection of the Muséum national d’Histoire naturelle (MNHN), Paris, is provided. The Appendix lists the pre-1900 collectors, n...
The stridulation in brachyuran crabs
A new family Leptograpsodidae n. fam. is erected to include an unusual genus of grapsoid crabs, LeptograpsodesMontgomery, 1931, represented by a burrowing species from South Australia L. octodentatus (H. Milne Edwards, 1837), with setal pouches on the coxae of pereiopods 2 to 4 that are evidence of a high degree of terrestrial adaptation. With near...
Two new species of the genus Austinograea Hessler & Martin, 1989 (Bythograeidae Williams, 1980), distinct from A. williamsi Hessler & Martin, 1989 and A. alayseae Guinot, 1990, are here reported from hydrothermal vent fields of the southwestern Pacific: A. hourdezi n. sp. and A. jolliveti n. sp., both in the Lau and North Fiji Back-Arc Basins. Aust...
Two new species of the genus Austinograea Hessler & Martin, 1989 (Bythograeidae Williams, 1980), distinct from A. williamsi Hessler & Martin, 1989 and A. alayseae Guinot, 1990, are here reported from hydrothermal vent fields of the southwestern Pacific: A. hourdezi n. sp. and A. jolliveti n. sp., both in the Lau and North Fiji Back-Arc Basins. Aust...
Species of Hymenosomatidae previously treated as species or junior synonyms of species of Halicarcinus White, 1846 are assigned to this and other genera. Halicarcinus is restricted to seven valid species; Rhynchoplax Stimpson, 1858, since 1980 synonymised with Halicarcinus, is now recognised with four species; four species are added to Micas Ng & R...
Contents. – Introduction – General habitus. Carcinization. External morphology – Structure of
the exoskeleton (cuticle) – Cephalothorax – Pleon – Appendages – Morphology of sound production
and reception. Internal morphology – Axial skeleton – Musculature and neuromuscular control –
Nervous and neurosensory organization – Digestive system – Circula...
Contents. – Introduction. Historical overview. Brachyuran origins. The present classification –
Brachyura as a monophyletic group – Section Podotremata – Podotreme superfamilies and families
– Section Eubrachyura – Heterotreme superfamilies and families – Thoracotreme superfamilies and
families. Acknowledgements. Appendix. Bibliography
Contents. – Introduction – Nomenclature and nomina above superfamily level – Correct assignment
of authorships – Terminology. Classification and diagnoses. Acknowledgements. Appendix.
Bibliography.
On the basis of several carapaces, a new species of xanthid crab, Etisus evamuellerae, is described from the Middle Miocene of the Vienna (Austria) and Great Hungarian basins. It differs from the coeval xanthids, Xantho moldavicus and Pilodius vulgaris, in having a distinctly protruding front and comparatively longer carapace. Contrary to those two...
A fourth species of gecarcinucid freshwater crab of the genus Balssiathelphusa Bott, 1969, is described from a cave system in eastern Kalimantan, Indonesia in Borneo. It is closest to B. cursor Ng, 1986, from Kalimantan, but can easily be distinguished from congeners by its relatively wider carapace, elongated ambulatory legs and characteristic mal...
One subgenus and one genus of Pseudothelphusidae described by Gilberto Rodríguez and Alfred E. Smalley from Mexico have been erroneously referred to for over 40 years as variously described in 1968 and 1969. The review of the original publication indicates that these taxa were published in a journal dated 1969 that became available for distribution...
Members of the brachyuran crab superfamily Xanthoidea sensu Ng, Guinot & Davie () are a morphologically and ecologically diverse assemblage encompassing more than 780 nominal species. On the basis of morphology, Xanthoidea is presently regarded to represent three families: Xanthidae, Pseudorhombilidae, and Panopeidae. However, few studies have exam...
A new homolodromioid, Tanidromites maerteni, the earliest member of the genus and family, is recorded from the lower upper Bajocian (Niortense Zone) of Calvados, northwest France. It is noted that carapace morphologies of other Jurassic brachyuran taxa within the family Prosopidae are closely similar to those of tanidromitids, and that diagnoses of...
A new homolodromioid, Tanidromites maerteni, the earliest member of the genus and family, is recorded from the lower upper Bajocian (Niortense Zone) of Calvados, northwest France. It is noted that carapace morphologies of other Jurassic brachyuran taxa within the family Prosopidae are closely similar to those of tanidromitids, and that diagnoses of...
The patterns of complexity of the male and female sexual openings in Brachyura, which have been the source of uncertainties and conflicting opinions, are documented, together with a study of the morphologies of the coxal and sternal gonopores in both sexes, penises, spermathecae, and gonopods. The vulvae, male gonopores and penises are described am...
Comparative ultrastructure of majoid spermatozoa belonging to 23 species, in 19 genera and five families, is considered, with new data on Schizophrys aspera; S. rufescens (Majidae, Majinae); Camposcia retusa (Inachidae); Pyromaia tuberculata (Inachoididae); and Huenia heraldica and Menaethius monoceros (Epialtidae, Epialtinae). The oregoniid Chiono...
Newly available material of a dynomenid crab, Graptocarcinus urbasaensis n. sp., from the Upper Cretaceous of northern Spain (Álava and Navarra), allowed the study of the morphology of well preserved ventral surfaces. We describe a new subfamily of Dynomenidae, comprising the middle-Upper Cretaceous Graptocarcinus and the Upper Jurassic Cyclothyreu...
A new inachoidid genus Paulita n. gen. is established for Paradasygyius tuberculatus (Lemos de Castro, 1949), from the western Atlantic. Paulita tuberculata (Lemos de Castro, 1949) n. comb. differs from Paradasygyius depressus (Bell, 1835), from the eastern Pacific, the type species and only remaining species of Paradasygyius Garth, 1958, by a numb...
Results of “Outgroup Identification” analyses. Majority-rule consensus trees of RaxML bootstrap analyses from four datasets. A. 28S rDNA gene. B. Mitochondrial (16S rDNA, COI, Cyt b). C. 16S rDNA and H3A. D. Nak. Bolded taxon labels represent the family Bythograeidae. Numbers to the left of a node are % bootstrap support. Aligned datasets, includin...
Sequence alignment of the H3A gene used in the Outgroup Identification analyses. (284 taxa; Nexus format).
(NEX)
Sequence alignment of the 16S rDNA, COI, Cytb, 28S rDNA, H3A, and NaK genes used in the ingroup analyses. (10 taxa; Nexus format).
(NEX)
Description of datasets used for the Outgroup Identification phylogenetic analyses based on multiple Brachyuran taxa. Corresponding best-fit models according to the Akaike Information Criterion (AIC), the corrected AIC (AICc), and the Bayesian Information Criterion (BIC) are shown.
(DOC)
Sequence alignment of the 28S rDNA gene used in the ingroup analyses. (13 taxa; Nexus format).
(NEX)
Sequence alignment of 16S rDNA and H3A genes used in the Outgroup Identification analyses. (28 taxa; Nexus format).
(NEX)
Sequence alignment of the 28S rDNA gene used in the Outgroup Identification analyses. (23 taxa; Nexus format).
(NEX)
Sequence alignment of the NaK gene used in the Outgroup Identification analyses. (23 taxa; Nexus format).
(NEX)
Sequence alignment of the 16S rDNA gene used in the ingroup analyses. (13 taxa; Nexus format).
(NEX)
Brachyuran crabs of the family Bythograeidae are endemic to deep-sea hydrothermal vents and represent one of the most successful groups of macroinvertebrates that have colonized this extreme environment. Occurring worldwide, the family includes six genera (Allograea, Austinograea, Bythograea, Cyanagraea, Gandalfus, and Segonzacia) and fourteen form...
Abundant fossil material of extinct brachyurans has revealed morphological details hitherto rarely used in
palaeontological studies. Detailed comparisons between extant and extinct material have been carried out, with an emphasis on thoracic sternum, abdomen and appendages. Documented for the first time is the unique character of Raninoidea De Haan...
The specific name of the crab Hebertides jurassica Guinot, De Angeli & Gar-assino, 2007, reflects the belief that the single known specimen is of Jurassic age and hence would represent a very early heterotreme eubrachyuran. The specimen was collected from a quarry at Ranville in Calvados, France, where Bathonian limestones of the Calcaire de Langru...
A new homoloid crab, Mithracites takedai, is described on the basis of two specimens from Colombia, preserved in a limestone nodule of early Aptian (Early Cretaceous) age, as dated by co-occurring ammonite species. The new species differs from the type species, M. vectensis, by a distinctly sulcate front, a narrower anterior mesogastric process, an...
Currently, 13 subfamilies are recognised in the brachyuran family Xanthidae: Actaeinae, Antrocarcininae, Chlorodiellinae, Cymoinae, Etisinae, Euxanthinae, Kraussiinae, Liomerinae, Polydectinae, Speocarcininae, Xanthinae, Zalasiinae and Zosiminae. This classification has been based on shared adult features like a transversely ovate carapace, well de...
The xanthid genus Glyptoxanthus A. Milne-Edwards, 1879, known from the tropical eastern Pacific, western and eastern Atlantic, and the Red Sea, is revised as part of an ongoing revision of the subfamily Euxanthinae Alcock, 1898. Analysis of morphological characters shows that Glyptoxanthus must be excluded from the subfamily Euxanthinae and placed...
The Hymenosomatidae is unique among the Brachyura on the basis of spermatozoal ultrastructure and morphological characters of the adults and larvae. The location of the hymenosomatid male gonopore, always a controversial question, is here shown to be sternal, not coxo-sternal. This disposition, analogous to the arrangement of Thoracotremata, contra...
A new subfamily Odiomarinae nov. subfam. is erected to receive two primitive genera of the eubrachyuran family Hymenosomatidae MacLeay, 1838: Odiomaris Ng & Richer de Forges, 1996, and Amarinus Lucas, 1980, mostly from fresh and estuarine waters of the Indo-West Pacific region. The new subfamily is characterised by the presence of "intercalated pla...
The genus Feldmannia was established by D. Guinot and M. Tavares for a fossil of the family Xanthidae, with Xanthosia wintoni Rathbun, 1935, as its type species (Guinot & Tavares 2001: 521). Their description was published in volume 23, fascicule 3 of Zoosystema, the zoological journal of the Muséum national d’Histoire naturelle, Paris. The inside...
The genus name Forestia was first used by Salvatore Trinchese (1881: 121, 122) for a new species of nudibranch, Forestia mirabilis, from Naples. Nils Hjalmar Odhner (1907: 26, 30), while studying the Opisthobranchia and Pteropoda in the Swedish State Museum, treated the genus Forestia Trinchese, 1881, and referred Eolis albicans Friele & Hansen, 18...
Sotoplacidae nov. fam. is described for Sotoplax robertsi Guinot, 1984, a goneplacoid crab from the western Atlantic that had been provisionally placed in the family Euryplacidae Stimpson, 1871. Sotoplax is characterised by a suite of characters, particularly related to the thoracic sternum, male abdomen, and to the protection of the penis, which p...
A middle Eocene (Lutetian) species from Italy placed in the extant genus Stevea Manning & Holthuis, 1981, and described as S. cesarii Beschin, Busulini, De Angeli & Tessier, 1994, should in fact be assigned to a related but distinct genus, here named Holthuisea gen. nov. Newly collected, well-preserved material of H. cesarii allows to supplement pr...
The spermatozoa of Potamon fluviatile and P. ibericum are virtually indistinguishable and do not support separate subgeneric rank (Potamon and Pontipotamon, respectively). Synapomorphic with the spermatozoa of the South African freshwater crab Potamonautes perlatus Sidneyi are the elongation of the two centrioles and disposition of the centrioles a...
A small faunule of crabs from the upper Campanian (Upper Cretaceous) of Valencia, eastern Spain, is described as Ibericancer sanchoi n. gen., n. sp., and assigned to a new family, the Ibericancridae n. fam., which is placed in the Dakoticancroidea Rathbun, 1917, until now known to comprise a single family, Dakoticancridae Rathbun, 1917, restricted...
A small faunule of crabs from the upper Campanian (Upper Cretaceous) of Valencia, eastern Spain, is described as Ibericancer sanchoi n. gen., n. sp., and assigned to a new family, the Ibericancridae n. fam., which is placed in the Dakoticancroidea Rathbun, 1917, until now known to comprise a single family, Dakoticancridae Rathbun, 1917, restricted...
A re-evaluation of the Dynomenidae Ortmann, 1892, on the basis of morphological characters, allows four subfamilies to be recognised, viz. Acanthodromiinae n. subfam., Dynomeninae Ortmann, 1892, Metadynomeninae n. subfam., and Paradynomeninae n. subfam. Sequences of character states for each homologous character (morphocline) show a similar polarit...
A re-evaluation of the Dynomenidae Ortmann, 1892, on the basis of morphological characters, allows four subfamilies to be recognised, viz. Acanthodromiinae n. subfam., Dynomeninae Ortmann, 1892, Metadynomeninae n. subfam., and Paradynomeninae n. subfam. Sequences of character states for each homologous character (morphocline) show a similar polarit...
Exceptionally well-preserved specimens of Cenomanocarcinus vanstraeleni Stenzel, 1945 from the Turonian of Mexico and Colombia, plus a remarkable Colombian C. aff . vanstraeleni of Coniacian age, as well as Cenomanocarcinus sp. from the upper Albian of Colombia, provide the basis for the defi nition of the Cenomanocarcinidae n. fam., a new podotrem...
Sulaplax gen. nov. and Guaplax gen. nov. are established for two new species of cave-dwelling false spider crabs (Hymenosomatidae) from Muna Island, Sulawesi Tenggara, and Kalimantan Timur, Indonesia, respectively. Sulaplax ensifer spec. nov. and Guaplax denticulata spec. nov. are distinguished from each other by carapace, rostral, pereopodal, abdo...
Sulaplax gen. nov. and Guaplax gen. nov. are established for two new species of cave-dwelling false spider crabs (Hymenosomatidae) from Muna Island, Sulawesi Tenggara, and Kalimantan Timur, Indonesia, respectively. Sulaplax ensifer spec. nov. and Guaplax denticulata spec. nov. are distinguished from each other by carapace, rostral, pereopodal, abdo...