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Volume 9 Numéro 14 Avril 2021 Revue De Faunistique

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Volume 9 Numéro 14 Avril 2021 Revue De Faunistique Faunitaxys Revue de Faunistique, Taxonomie et Systématique morphologique et moléculaire Volume 9 ISSN : 2269 - 6016 Avril 2021 Numéro 14 Dépôt légal : Avril 2021 Faunitaxys Revue de Faunistique, Taxonomie et Systématique morphologique et moléculaire ZooBank : http://zoobank.org/79A36B2E-F645-4F9A-AE2B-ED32CE6771CC Directeur de la publication, rédacteur, conception graphique et PAO : Lionel Delaunay Cette revue ne peut pas être vendue Elle est distribuée par échange aux institutions (version papier) et sur simple demande aux particuliers (format PDF) à l’adresse suivante : AFCFF 28, rue Voltaire, F- 42100 Saint Etienne E-mail : [email protected] Elle est disponible librement au téléchargement à partir du site : http ://faunitaxys.fr/ La parution de Faunitaxys est apériodique Imprimée sur les presses de SPEED COPIE 6, rue Tréfilerie, F- 42100 Saint-Etienne Imprimé le 15 avril 2021 Faunitaxys, 9(14), 2021 : 1 – 5. 1 One more new genus and species of scorpion from Early Cretaceous Burmese amber (Scorpiones: Protoischnuridae) WILSON R. LOURENÇO (1) & JÜRGEN VELTEN (2) (1) Muséum national d’Histoire naturelle, Sorbonne Universités, Institut de Systématique, Evolution, Biodiversité (ISYEB), UMR7205-CNRS, MNHN, UPMC, EPHE, CP 53, 57 rue Cuvier, 75005 Paris, France. - [email protected] - ZooBank : http://zoobank.org/58448BD6-79D7-46CE-AFDD-91EFF2B7D4EF (2) Uhlandstr. 9 a, 67292 Kirchheimbolanden, Germany. - ZooBank : http://zoobank.org/F7A6D8F4-5139-4A78-BC39-AB21BA60FE1C Keywords : Abstract. – Scorpions can still be considered rare among the arthropods found trapped in amber; however, in the last twenty years the number of new described taxa knew a remarkable increase. Early Cretaceous Burmese amber, also known as Burmite, brought the major Scorpiones; smeelei; contribution to the knowledge of these amber fossils. In the present contribution one new Protoischnuridae; Cretaceous; genera and species are described bringing further confirmation to the validity of the family fossil; Burmese amber; Protoischnuridae Carvalho & Lourenço, 2001. The discovery of this new scorpion group in new genus; Myanmar. Burmite attests to the considerable degree of diversity in these amber-producing forests. new species; Lourenço W. R. & Velten J., 2021. – One more new genus and species of scorpion from Early Cretaceousopisthacanthus; Cretaceous Burmese amber (Scorpiones: Protoischnuridae). Faunitaxys, 9(14): 1 – 5. ZooBank: http://zoobank.org/BCDC4212-B213-4FC3-BD0E-ED8E815D082C Introduction sedimentary fossil described from Santana Formation in the Crato Area, Lower Cretaceous of Brazil (Carvalho & Lourenço, 2001). It As already outlined in several previous papers (Lourenço, is important to recall that this Cretaceous family was arbitrarily 2016a,b, 2018a,b,c; Lourenço & Velten, 2019, 2020), scorpions placed in the synonymy of the extant family Hemiscorpiidae included in amber can in general be considered as rare. Pocock, 1893 (now Hormuridae Laurie, 1896) by Menon (2007), Nevertheless, during the last 25 years an increasing number of and that the discovery and description of the genus amber pieces containing scorpions have become available for Cretaceoushormiops Lourenço, 2018 authorised its revalidation. For study. Synopsis of these scorpion taxa recently described from precise details on these taxonomic changes refer to Lourenço amber were provided by Lourenço (2009, 2016a). (2018a). The most conspicuous improvement in the number of new taxa The study of one new Burmese amber piece containing one concerned the specimens found in Early Cretaceous Burmese amber remarkable scorpion, leads to the description of one new genus mainly due to the increasing commercial availability of this amber and species. More significantly, however, are the taxonomic during the last 20 years. The majority of the new genera and species elements furnished by this specimen allowing a further described belong to two families Palaeoburmesebuthidae Lourenço, confirmation of the validity of family Protoischnuridae. The 2015 and Chaerilobuthidae Lourenço & Beigel, 2011. Most of these description of this new Burmite element further attests to the described taxa were associated with buthoids, such as the genera considerable faunal diversity in the Burmese amber-producing Palaeoburmesebuthus Lourenço, 2002 Betaburmesebuthus forests. Lourenço, 2015 and Spinoburmesebuthus Lourenço, 2017 (family Palaeoburmesebuthidae) however, one genus, Archaeoananteroides Material and methods Lourenço 2016 was clearly accommodated in the family Buthidae C. L. Koch, 1837 (Lourenço & Velten, 2016). A number of non The specimen investigated is originally preserved in a rather clear buthoid elements have also been recorded and described, namely: oval-shaped block of pale yellow amber. Details of the piece are Electrochaerilus buckleyi Santiago-Blay, Fet, Soleglad & Anderson, provided with the description. Many characters, and in particular 2004 (family Chaerilidae Pocock, 1893), several species of the trichobothria, are particularly well visible in the specimen, genus Chaerilobuthus Lourenço & Beigel, 2011 and Chaeriloiurus allowing detailed investigation. Nevertheless, some characters can brigittemuellerae Lourenço, 2020 (family Chaerilobuthidae), be more difficult to be interpreted because the specimen suffered a Palaeotrilineatus ellenbergeri Lourenço, 2012 (family certain degree of desiccation (mummification) process within the Palaeotrilineatidae Lourenço, 2012), Archaeoscorpiops cretacicus resin and besides it was probably dismembered previously to be Lourenço, 2015, Burmesescorpiops groehni Lourenço, 2016 and catch in the resin. A situation already observed with other Burmite Chaeriloscorpiops bautschi Lourenço, 2020 (subfamily specimens. The presence of quite many bubbles and inclusions Archaeoscorpiopinae Lourenço, 2015: family Palaeoeuscorpiidae such as vegetal remains or even detritus equally prevents a fully Lourenço, 2003), Sucinlourencous adrianae Rossi, 2015 (family observation of some characters. The schematic drawings provided Sucinlourencoidae Rossi, 2015). For a synthesis see Lourenço here are interpretations of what was observable. Illustrations and (2018a) and Lourenço & Velten (2020). Most remarkable was the measurements were produced with the aid of a Wild M5 description of Cretaceoushormiops knodeli Lourenço, 2018, new stereomicroscope equipped with a drawing tube and an ocular genus and species accommodated in the family Protoischnuridae micrometer. Measurements follow Stahnke (1970) and are given in Carvalho et Lourenço, 2001, family originally based on a 2 LOURENÇO & VELTEN. – New scorpion from Early Cretaceous Burmese amber mm, and morphological terminology mostly follows Hjelle (1990). Trichobothrial notations follow Vachon (1974). Trichobothria were Type locality and horizon. – Myanmar (Burma), Kachin; precise definitely recorded only when their bothria (areoles) could be locality unknown, as for most Burmite pieces. Lower Cretaceous. observed. Other trichobothria may be suggested by the presence of Etymology. – Name honours Doctor Ben P. J. Smeele, Amsterdam, transverse hairs. Nederland, who supported the study of the amber specimen. Systematic treatment Depository. – The type specimen is deposited in the Collection of Doctor Ben P. J. Smeele, Amsterdam, Nederland. Family Protoischnuridae Carvalho & Lourenço, 2001 Description Genus Cretaceousopisthacanthus Lourenço gen. n. Coloration. – The scorpion is reddish-brown to brownish; carapace and ZooBank: http://zoobank.org/1FC6ED3F-83D8-49B5-B7C3-308F2AB929C2 tergites reddish-brown, with carapace slightly darker; metasomal segments brownish; segment V and telson darker; pedipalps and legs reddish-brown. Diagnosis for the new genus. – Total length 22.97 mm. General The ventral aspect of the specimen is brownish. coloration reddish-brown to brownish. Carapace with a strongly Morphologie. – Carapace with few granulations, but not really smooth; marked median concavity; median ocular tubercle only slightly anterior margin with a strongly marked median concavity. Carinae weakly anterior to the centre of the carapace; three lateral eyes can be marked to absent; furrows moderate to strong. Median ocular tubercle slightly observed; a possible fourth pair of vestigial eyes may exist anterior to the centre of carapace; median eyes large in size and separated by (Fig. 1). Sternum destroyed therefore not observable. Pectines; less than one ocular diameter. Three pairs of lateral eyes, better observed in the only the left one is observable; moderate to large in size with 10 left side of the carapace; a possible fourth pair of vestigial eyes may exist. Sternum dommaged, therefore not observable. Mesosomal tergites with teeth; fulcra present and conspicuous (Fig. 2-15). Spiracles are moderate granulations and one median weak carina; VII with five weak oval to slit-like in shape (Fig. 2). Metasomal segment rounded carinae. Pectines; only the left one is observable; moderate to large in size with and weakly flattened dorsally with only dorsal and latero-dorsal 10 teeth; fulcra present and conspicuous. Sternites with minute granulations, carinae observable. Telson with a long globular vesicle not almost smooth; spiracles oval to slit-like in shape. Metasomal segment flattened laterally; no annular ring on the telson is observed rounded and weakly flattened dorsally with only dorsal and latero-dorsal (Fig. 3-14). The general morphology of the pedipalps is similar carinae observable; dorsal carinae of segments IV and V without
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