New Genus and Species of Limnichines from the Cretaceous Amber of Myanmar and Taxonomic Notes on the Family Limnichidae (Coleoptera, Polyphaga)

Kirejtshuk, Alexander G.; Прокин, А. А.

doi:10.3390/insects13100891

Cited by 2 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The transition of the preimaginal stages of these kateretids to development in a helophytic group of plants can be interpreted as a rather ancient feature of their lifestyle, very different from those of other kateretids with known biology. The larval development inside the parenchyma of vegetative plant organs (IVth stage of regular trophic changes in development of feeding on the higher plants according to Kirejtshuk, 1989 and Kirejtshuk & al., 2023) also supports an assumption on a significant age of association of the two considered kateretid genera and Acorus species. Besides, it should be noted that the genera Platamartus and Sibirhelus are rather different from each other (apparently not only in adults, but also in larvae: see above) and can be scarcely regarded as very closely related, and, therefore, the association of their members with Acorus seemed to appear independently.…”

Section: Discussionsupporting

confidence: 74%

Diploids and tetraploids of Acorus (Acoraceae) in temperate Asia are pseudocryptic species with clear differences in micromorphology, DNA sequences and distribution patterns, but shared pollination biology

Sokoloff,

Degtjareva,

Skaptsov

et al. 2024

TAXON

View full text Add to dashboard Cite

Commonly considered bispecific, Acorus is one of the most phylogenetically isolated angiosperm genera that forms the order Acorales sister to the rest of the monocots. The Acorus calamus group is widely distributed in the Holarctic regions of Eurasia and America and has strong medicinal and other practical uses since prehistoric times. Earlier studies interpreted native diploids and invasive triploids occurring in North America as two species that differed in morphology and distribution ranges. In contrast, diploids, triploids, and tetraploids occurring in Eurasia are commonly interpreted as one species because they reportedly cannot be distinguished in collections. We resolve the controversy over taxonomic concepts between Eurasia and America and provide the first detailed multidisciplinary account of Acorus in temperate Asia. We used plastid and nuclear markers, leaf anatomy, seed micromorphology, pollen stainability, flow cytometry, and direct chromosome counts. Diploids and tetraploids show stable molecular and micromorphological differences. Triploids are their sterile hybrids, with the plastid genome inherited from the diploid parent. Diploids of America and Asia tend to differ in leaf characters. Coadaptative coexistence with pollinating beetles Platamartus jakowlewi and Sibirhelus corpulentus (Kateretidae) is conserved between diploids and tetraploids and over a distance of 4700 km between Japan and Western Siberia. Diploids are self‐compatible and can set seeds in the absence of kateretid beetles. Tetraploids are self‐incompatible and/or cannot set seeds in the absence of Platamartus and Sibirhelus. Diploids (A. americanus) and tetraploids (A. verus) are two biological species; the former has two subspecies. Acorus calamus should be restricted to triploids; it apparently first evolved in temperate Asia. Diploids mostly occur in much cooler climates than triploids and tetraploids. Accessions of A. verus and A. calamus from tropical Asia are apparently derived from ancient introductions. Our data provide a new framework for the pharmacological use of Acorus.

show abstract

Section: Discussionsupporting

confidence: 74%

Diploids and tetraploids of Acorus (Acoraceae) in temperate Asia are pseudocryptic species with clear differences in micromorphology, DNA sequences and distribution patterns, but shared pollination biology

Sokoloff,

Degtjareva,

Skaptsov

et al. 2024

TAXON

View full text Add to dashboard Cite

show abstract

“…Cucujoidea are now well documented in the Cretaceous fossil record. A new species of the genus Phenolia Erichson of the Nitidulidae (Nitiduloidea) from burmite was described by Kirejtshuk et al (2023). However, the authors discuss the phylogeny and taxonomy of the ‘nitidulid’ group of families without phylogenetic analysis or a consistent phylogenetic evaluation of potential apomorphies.…”

Section: The Cretaceous (145–66 Ma)mentioning

confidence: 99%

The evolutionary history of Coleoptera (Insecta) in the late Palaeozoic and the Mesozoic

Beutel,

Xu,

Jarzembowski

et al. 2024

Systematic Entomology

View full text Add to dashboard Cite

Recent progress in beetle palaeontology has incited us to re‐address the evolutionary history of the group. The Permian †Tshekardocoleidae had elytra that covered the posterior body in a loose tent‐like manner. The formation of elytral epipleura and a tight fit of elytra and abdomen were important evolutionary transformations in the Middle Permian, resulting in a tightly enclosed subelytral space. Permian families were likely associated with dead wood of gymnospermous trees. The end‐Permian extinction event resulted in a turnover in the composition of beetle faunas, especially a decline of large‐bodied wood‐associated forms. Adephaga and Myxophaga underwent a first wave of diversification in the Triassic. Polyphaga are very rare in this period. The first wave of diversification of this suborder occurs in the Jurassic, with fossils of Elateriformia, Staphyliniformia and Cucujiformia. The Cretaceous fossil record has been tremendously enriched by the discovery of amber inclusions. Numerous fossils represent all major polyphagan lineages and also the remaining suborders. Improved analytical methods for documenting and placing extinct taxa are discussed. Different factors have played a role in the diversification of beetles. The enormous number of species associated with flowering plants, and timing and patterns of diversification in phytophagous lineages indicate that the angiosperm radiation played a major role in beetle macroevolution. Moreover, the evolution of intimate partnerships with symbionts and the acquisition of novel genes—obtained from fungi and bacteria via horizontal gene transfers—facilitated the use of plant material as a food source and were key innovations in the diversification of plant‐feeding beetles.

show abstract

New Genus and Species of Limnichines from the Cretaceous Amber of Myanmar and Taxonomic Notes on the Family Limnichidae (Coleoptera, Polyphaga)

Cited by 2 publications

References 28 publications

Diploids and tetraploids of Acorus (Acoraceae) in temperate Asia are pseudocryptic species with clear differences in micromorphology, DNA sequences and distribution patterns, but shared pollination biology

Diploids and tetraploids of Acorus (Acoraceae) in temperate Asia are pseudocryptic species with clear differences in micromorphology, DNA sequences and distribution patterns, but shared pollination biology

The evolutionary history of Coleoptera (Insecta) in the late Palaeozoic and the Mesozoic

Contact Info

Product

Resources

About