A new stonefly species (Plecoptera: Perlodidae) from Eocene Baltic amber and questions on the wing venation potential for species diagnostic of fossil Plecoptera

Jouault, Corentin; Legendre, Frédéric; Condamine, Fabien L.; Nel, André

doi:10.11646/palaeoentomology.4.3.12

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…Also, the phylogenetic placement of many fossil species at the family level needs to be revised; a task made even more complicated because of the high plasticity of the wing veins of stoneflies. This situation is often ignored, most fossil plecopteran species being described from a single-sometimes partial-specimen (Jouault et al 2021a). Altogether, these features make any inference drawn from the fossil record sensitive to several paleontological biases, which need to be considered.…”

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confidence: 99%

Estimating the Drivers of Diversification of Stoneflies Through Time and the Limits of Their Fossil Record

Jouault

Nel

Legendre

et al. 2022

Insect Systematics and Diversity

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Deciphering the timing of lineage diversification and extinction has greatly benefited in the last decade from methodological developments in fossil-based analyses. If these advances are increasingly used to study the past dynamics of vertebrates, other taxa such as insects remain relatively neglected. Our understanding of how insect clades waxed and waned or of the impact of major paleoenvironmental changes during their periods of diversification and extinction (mass extinction) are rarely investigated. Here, we compile and analyze the fossil record of Plecoptera (1,742 vetted occurrences) to investigate their genus-level diversification and diversity dynamics using a Bayesian process-based model that incorporates temporal preservation biases. We found that the Permian-Triassic mass extinction has drastically impacted Plecoptera, while the Cretaceous Terrestrial Revolution corresponds with a turnover of plecopteran fauna. We also unveiled three major gaps in the plecopteran fossil record: the Carboniferous-Permian transition, the late Early Cretaceous, and the late Cenomanian to Bartonian, which will need to be further investigated. Based on the life history of extant Plecoptera, we investigate the correlations between their past dynamic and a series of biotic (Red Queen hypothesis) and abiotic (Court Jester hypothesis) factors. These analyses highlight the major role of continental fragmentation in the evolutionary history of stoneflies, which is in line with phylogeny-based biogeographic analyses showing how vicariance drove their diversification. Our study advocates analyzing the fossil record with caution, while attempting to unveil the diversification and extinction periods plus the likely triggers of these past dynamics of diversification.

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confidence: 99%

Estimating the Drivers of Diversification of Stoneflies Through Time and the Limits of Their Fossil Record

Jouault

Nel

Legendre

et al. 2022

Insect Systematics and Diversity

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“…They are used to infer paleobiogeographic scenarios, dynamics of lineages, and interactions with their environment (e.g., Garrouste et al 2016;Jouault et al 2022a;Aria et al 2023). However, many polyneopteran lineages are poorly defined in the Paleozoic because of the variability of their wing venation and of the limited number of available specimens (Béthoux 2005;Jouault et al 2021).…”

Section: Systematic Considerations On the Family Phyloblattidaementioning

confidence: 99%

New insects (Paoliida, Dictyoptera) from the Carboniferous outcrop of Tante Victoire in Var, France

Nel,

Garrouste,

Jouault

2023

Alcheringa: An Australasian Journal of Palaeontology

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We introduce a novel paoliid, Carbonidelia gallica gen. et sp. nov., which may share close affinities with the 'ideliid ' genus Sojanidelia Storozhenko, 1992. This new taxon is described from Gzhelian strata exposed at Tante Victoire (Var, France). Additionally, we present a remarkably well-preserved forewing from the same outcrop belonging to the phyloblattid genus and species Anthracoblattina ensifer cf. 'variety desguini'. This species was previously known from the Gzhelian of Commentry (Allier, France). Therefore, this finding strengthens the Gzhelian age derived from the study of the palaeoflora at this outcrop.In this study, we also briefly delve into the inter-and intraspecific variability in the forewing venation of the 'Anthracoblattina gigantea-ensifera group'. Furthermore, we challenge the classification of two Mesozoic roachoids, Sobytie tungusicum Vršanský, 2010 and Pozabudnutie antiquorum Hinkelman and Vršanský, 2022, which, in our view, do not belong to the Phyloblattidae family. Instead, they should be regarded as Dictyoptera of uncertain family affinities. A comprehensive revision of these species will be necessary to establish their precise taxonomic positions.

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A fossil aphidlion preserved together with its prey in 40 million-year-old Baltic amber

Haug

Kiesmüller

Haug

et al. 2022

Palaeobio Palaeoenv

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Lacewings (Neuroptera) have predatory larvae with highly specialised mouthparts. Larvae of many groups within Neuroptera are well represented as fossils preserved in ambers; however, larvae of some groups are less often reported in the literature. Here we report such a rare case, a larva of the group Hemerobiidae, an aphidlion, preserved in a piece of Eocene Baltic amber (about 40 million years old). It is preserved together with three possible prey items, wingless aphids, most likely representatives of Germaraphis (or at least closely related to this group). The aphidlion can be identified based on the morphology of the antennae, simple curved and toothless stylets, well developed labial palps, and the absence of other mouth-part structures such as a protruding labrum or maxillary palps. A long, club-shaped distal element of the labial palps identifies the specimen as a larva of Hemerobiidae. The aphids can be identified based on their very long, beak-like mouth parts. This find is, to our knowledge, the first example of a lacewing larva preserved together with its potential prey. We briefly discuss other cases in which fossils preserved in amber allow us to reconstruct aspects of behaviour and interactions of fossil lacewing larvae.

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A new stonefly species (Plecoptera: Perlodidae) from Eocene Baltic amber and questions on the wing venation potential for species diagnostic of fossil Plecoptera

Cited by 4 publications

References 30 publications

Estimating the Drivers of Diversification of Stoneflies Through Time and the Limits of Their Fossil Record

Estimating the Drivers of Diversification of Stoneflies Through Time and the Limits of Their Fossil Record

New insects (Paoliida, Dictyoptera) from the Carboniferous outcrop of Tante Victoire in Var, France

A fossil aphidlion preserved together with its prey in 40 million-year-old Baltic amber

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