New species of <i>Myrmicium</i> Westwood (Psedosiricidae = Myrmiciidae: Hymenoptera, Insecta) from the Early Cretaceous (Aptian) of the Araripe Basin, Brazil

This paper records the first occurrence of the genus Myrmicium Westwood, 1854 in the Cretaceous of Gondwana and describes it as a new species Myrmicium araripterum sp. nov, based on the most complete specimen of this genus yet known, which represents the largest specimen of the grade “Symphyta” ever found in the Crato Formation.

Key words
New taxa; Myrmicium araripterum; Siricoidea; Siricomorpha

Authorship

LUÍS C.B. FREITAS

Serviço Geológico do Brasil, Residência de Fortaleza/REFO, Avenida Antônio Sales, 1418, Joaquim Távora, 60135-101 Fortaleza, CE, BrazilServiço Geológico do BrasilBrazilFortaleza, CE, BrazilServiço Geológico do Brasil, Residência de Fortaleza/REFO, Avenida Antônio Sales, 1418, Joaquim Távora, 60135-101 Fortaleza, CE, Brazil

https://orcid.org/0000-0002-1253-3619

ALEXANDR P. RASNITSYN

A.A. Borissiak Palaeontological Institute, Russian Academy of Sciences, 117647, Moscow, RussiaRussian Academy of SciencesRussiaMoscow, RussiaA.A. Borissiak Palaeontological Institute, Russian Academy of Sciences, 117647, Moscow, Russia

Department of Invertebrate Paleontology, Natural History Museum, Cromwell Road, SW7 5BD, London, United KingdomNatural History MuseumUnited KingdomLondon, United KingdomDepartment of Invertebrate Paleontology, Natural History Museum, Cromwell Road, SW7 5BD, London, United Kingdom

https://orcid.org/0000-0002-6350-0040

GERALDO J.B. MOURA

Universidade Federal Rural de Pernambuco/UFRPE, Departamento de Biologia, Laboratório de Estudos Herpetológicos e Paleoherpetológicos, Rua Don Manuel de Medeiros, s/n, Dois Irmãos, 52171-900 Recife, PE, BrazilUniversidade Federal Rural de Pernambuco/UFRPEBrazilRecife, PE, BrazilUniversidade Federal Rural de Pernambuco/UFRPE, Departamento de Biologia, Laboratório de Estudos Herpetológicos e Paleoherpetológicos, Rua Don Manuel de Medeiros, s/n, Dois Irmãos, 52171-900 Recife, PE, Brazil

https://orcid.org/0000-0001-6035-516X

MARCIO MENDES

Universidade Federal do Ceará/UFC, Departamento de Geologia, Laboratório de Paleontologia, Campus do PICI Bl 912, 60020-181 Fortaleza, CE, BrazilUniversidade Federal do Ceará/UFCBrazilFortaleza, CE, BrazilUniversidade Federal do Ceará/UFC, Departamento de Geologia, Laboratório de Paleontologia, Campus do PICI Bl 912, 60020-181 Fortaleza, CE, Brazil

https://orcid.org/0000-0003-3022-7161

Correspondence to: Luis Carlos Bastos Freitas E-mail: lcgeologia@hotmail.com

AUTHOR CONTRIBUTIONS

Freitas, LCB prepared the specimen, made the figures and conducted the writing of the manuscript. Rasnitzin, PA did the review, contributed to the diagnosis and made important contributions to the discussions of the manuscript. Moura, GJB and Mendes, M participated in the description of the specimen, mainly in the initial phase. All authors made critical reviews of the manuscript’s content from the first version to the final version submitted for publication.

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (4)

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Figure 1
Map of geographical area and lithologic distribution in the Araripe Basin, with details of the region of Nova Olinda and Santana do Cariri.

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Figure 2
Sedimentary facies of the Crato Formation, Santana Group, Lower Cretaceous of the Araripe Basin, specifying the stratigraphic location of the fossil find.

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Figure 3
Myrmicium araripterum, sp. nov. Venational symbols standard: Discrimen – midventral thoracic suture, a line of invagination of sternum; N1– pronotum, N2 – mesonotum, cx3 – hind coxa, f3 – hind femur, ti3 – hind tibia, tr3 – hind trochanter, st – fore (inner) margin of abdominal sterna, vr1 – first valvifer of ovipositor, vr2 – its second valvifer, v1+2 – ovipositor valves.

Thumbnail

Figure 4
Myrmicium araripterum, sp. nov.

Figure 1 Map of geographical area and lithologic distribution in the Araripe Basin, with details of the region of Nova Olinda and Santana do Cariri.

Figure 2 Sedimentary facies of the Crato Formation, Santana Group, Lower Cretaceous of the Araripe Basin, specifying the stratigraphic location of the fossil find.

Figure 3 Myrmicium araripterum, sp. nov. Venational symbols standard: Discrimen – midventral thoracic suture, a line of invagination of sternum; N1– pronotum, N2 – mesonotum, cx3 – hind coxa, f3 – hind femur, ti3 – hind tibia, tr3 – hind trochanter, st – fore (inner) margin of abdominal sterna, vr1 – first valvifer of ovipositor, vr2 – its second valvifer, v1+2 – ovipositor valves.

Figure 4 Myrmicium araripterum, sp. nov.

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New species of <i>Myrmicium</i> Westwood (Psedosiricidae = Myrmiciidae: Hymenoptera, Insecta) from the Early Cretaceous (Aptian) of the Araripe Basin, Brazil

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[1] Correspondence to: Luis Carlos Bastos Freitas E-mail: lcgeologia@hotmail.com