Eryma glaessneri

• Main Authors: Devillez, Julien, Charbonnier, Sylvain, Hyžný, Matúš, Leroy, Lucien
• Format: Text
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Decapoda; Erymidae; Eryma; Eryma glaessneri; Antarctic; Alte; Alexander Island; Stump; Titus; The Stump; Antarc*; British Antarctic Survey
• Online Access: https://dx.doi.org/10.5281/zenodo.5208490; https://zenodo.org/record/5208490

Eryma glaessneri (Van Straelen, 1936) (Fig. 4G, H) Enoploclytia glaessneri Van Straelen, 1936: 10, 11, pl. 3, fig. 1. — Secrétan 1964: 35, 94. — Schweitzer et al. 2010: 22. Eryma glaessneri – Förster 1966: 123, fig. 22 (non pl. 17, fig. 3). — Feldmann & Titus 2006: 63. — Karasawa et al. 2008: 104. TYPE MATERIAL. — Holotype MNHG GEPI 28369 housed in MHNG (Van Straelen coll.) (cast MNHN.F. R10204). TYPE LOCALITY. — Escragnolles, Alpes-Maritimes department, Provence-Alpes-Côte d’Azur region, southeastern France. TYPE AGE. — Hauterivian, Early Cretaceous. DESCRIPTION Subcylindrical carapace (holotype: CL = 55 mm, CH = 36mm); rostrum not preserved; intercalated plate present but poorly preserved; wide cardiac region and inflated branchial region; deep cervical groove, joined to dorsal margin and to antennal groove, straight and strongly inclined above gastro-orbital groove, straight and subvertical under gastroorbital groove; cephalic region with oblique orbital row of tubercles (antennal not preserved); deep antennal groove, as wide as cervical groove, strongly curved and delimiting raised antennal lobe, shallowest in its anterior end; long, wide gastro-orbital groove originating as deep and large inflexion of cervical groove; wide postcervical groove, dorsally deep, curved forward, strongly inclined, joined to dorsal margin and joined medially to branchiocardiac groove, extended with a long, shallow ventral extension; shallow branchiocardiac groove, shallowest at carapace mid-height, subparallel to postcervical groove, strongly inclined, joined to dorsal margin in posterior-most part of branchial region; narrow, deep hepatic groove, posteriorly concave, anteriorly slightly convex, joined to cervical groove; slightly inflated ω bulge, delimited ventrally by a narrow and shallow depression extending between antennal and hepatic grooves; flat attachment site of adductor testis muscle (χ bulge); deep inferior groove; carapace covered with shallow depressions between small tubercles; cardiac region with an oblique row of coarse tubercles; gastric region with two rows of coarse tubercles parallel to intercalated plate. DISCUSSION This species was originally assigned to Enoploclytia M’Coy, 1849 by Van Straelen (1936). Later, Förster (1966) placed it in Eryma this act was followed by all successive authors until the work by Schweitzer et al. (2010) who re-established Van Straelen’s opinion. The re-examination of the holotype leads us to concur with Förster’s proposition. Indeed, the carapace groove pattern (postcervical and branchiocardiac grooves joined medially) is diagnostic of Eryma . We note that Förster (1966: pl. 17, fig. 3) figured a specimen which is clearly not Eryma glaessneri , because it exhibits carapace groove pattern (branchiocardiac groove interrupted in carapace mid-height; sinuous postcervical groove) typical of Enoploclytia . : Published as part of Devillez, Julien, Charbonnier, Sylvain, Hyžný, Matúš & Leroy, Lucien, 2016, Review of the Early Cretaceous erymid lobsters (Crustacea: Decapoda) from the Western Tethys, pp. 515-541 in Geodiversitas 38 (4) on page 521, DOI: 10.5252/g2016n4a4, http://zenodo.org/record/5208463 : {"references": ["VAN STRAELEN V. 1936. - Crustaces decapodes nouveaux ou peu connus de l'epoque cretacique. Bulletin du Musee royal d'Histoire naturelle de Belgique 12 (45): 1 - 50.", "SECRETAN S. 1964. - Les Crustaces decapodes du Jurassique superieur et du Cretace de Madagascar. Memoires du Museum national d'Histoire naturelle, Nouvelle serie, Serie C, Sciences de la Terre 14: 1 - 226.", "SCHWEITZER C. E., FELDMANN R. M., GARASSINO A., KARASAWA H. & SCHWEIGERT G. 2010. - Systematic list of fossil decapod crustacean species. Crustaceana Monographs 10: 1 - 222. https: // doi. org / 10.1163 / ej. 9789004178915. i- 222", "FORSTER R. 1966. - Uber die Erymiden, eine alte konservative Familie der mesozoischen Dekapoden. Palaeontographica A 125 (4 - 6): 61 - 175.", "FELDMANN R. M. & TITUS A. L. 2006. - Eryma jungostrix n. sp. (Decapoda; Erymidae) from the Redwater Shale of the Stump Formation (Jurassic; Oxfordian) of Utah. Journal of Crustacean Biology 26 (1): 63 - 68.", "KARASAWA H., OHARA M. & KATO H. 2008. - New records for Crustacea from the Arida Formation (Lower Cretaceous, Barremian) of Japan. Boletin de la Sociedad Geologica Mexicana 60 (1): 101 - 110.", "TAYLOR B. J. 1979. - Macrurous Decapoda from the Lower Cretaceous of South-Eastern Alexander Island. British Antarctic Survey Scientific Reports 81: 1 - 39.", "M'COY F. 1849. - On the classification of some British Fossil Crustacea, with Notices of new Forms in the University Collection at Cambridge. Annals and Magazine of Natural History, including Zoology, Botany, and Geology 4 (2): 330 - 335. https: // doi. org / 10.1080 / 03745486009494810"]}