Article
Genetics & Heredity
Ran Li, Zhenxing Ma, Changfa Zhou
Summary: The study determined the complete mitogenomes of two species of the family Neoephemeridae, revealing the phylogenetic relationships and evolution of this group. The results supported the monophyly of seven studied families and provided insights into the importance of genes like COI and ND2 in the evolutionary history of mayflies. The analysis of selection pressures and reconstruction of phylogenetic trees helped determine the relationships between families within the group.
Article
Zoology
Kai-chen Wang, Qing-yi Yang, Chang-fa Zhou
Summary: This article reports a new species of mayfly, Neoleptophlebia uncinata Zhou sp. nov., discovered in Nanjing municipality, eastern China. Diagnostically, the imago of this species has larger lateral penial appendages than its congeners, and its nymph has subequal broadened segments II and III of maxillary and labial palpi. Biogeographically, this species bridges two northern and southern groups of the genus.
Article
Multidisciplinary Sciences
Arianny P. Storari, Arnold H. Staniczek, Roman J. Godunko
Summary: This study reviews the adult holotype of the fossil mayfly Astraeoptera cretacica and assigns it to a new family, Astraeopteridae fam. nov. Additionally, new representatives of Astraeopteridae fam. nov., namely Astraeoptera vitrea sp. nov. and Astraeoptera oligovenata sp. nov., as well as a new genus and species, Eosophobia acuta gen. et sp. nov., are described based on alate specimens. Analysis of the new material suggests systematic affinities between Astraeopteridae fam. nov. and extant families of Siphlonuroidea in the Southern Hemisphere. These newly described fossil mayflies from the Cretaceous of Brazil contribute to the understanding of mayfly biogeography and systematics.
SCIENTIFIC REPORTS
(2023)
Article
Genetics & Heredity
Wei Zhang, Ran Li, Changfa Zhou
Summary: Current research on Ephemeroptera focuses on morphology due to limited mitogenome data. This study sequenced and compared the mitogenomes of Epeorus carinatus and E. dayongensis, finding an extra tRNA(Met) gene that may be a molecular synapomorphy for part of Heptageniidae. Phylogenetic analyses suggest E. carinatus and E. dayongensis should be grouped into different subgenera within Heptageniidae.
Article
Geology
Zhi-Teng Chen, Xuhongyi Zheng
Summary: A new genus and species of mayfly, Kachinophlebia zhouchangfai gen. et sp. nov. (Ephemeroptera: Leptophlebiidae), is described and illustrated based on a larva found in mid-Cretaceous amber from Kachin, northern Myanmar. The new taxonomic units are primarily established based on the morphological characteristics of the mouthparts, legs, abdominal gills, and caudal filaments. This new amber mayfly is the first report of Leptophlebiidae from mid-Cretaceous Kachin amber.
CRETACEOUS RESEARCH
(2022)
Article
Entomology
Zhiming Lei, Dewen Gong, Wei Zhang, Changfa Zhou
Summary: The study reveals a unique mayfly species with reduced crossveins on its wings and other extraordinary characteristics in both nymphs and adults. A new genus is established to highlight the uniqueness of this species in the Heptageniidae family.
Article
Entomology
Manqing Ding, Luke M. Jacobus, Changfa Zhou
Summary: The present study provides a comprehensive and detailed investigation on the diversity of the genus Serratella in China. This research offers valuable information and character candidates for the identification of the genus and contributes to understanding its phylogenetic position within the family.
Article
Genetics & Heredity
Jia-Yin Guan, Zi-Yi Zhang, Yu-Rou Cao, Xiao-Dong Xu, Kenneth B. Storey, Dan-Na Yu, Jia-Yong Zhang
Summary: This study shows that imidacloprid has a significant negative impact on the survival rate of Choroterpes (Euthralus) yixingensis nymphs, with the degree of impact positively correlated with exposure time and concentration. Additionally, the research on mitochondrial protein-coding genes of mayflies suggests they could serve as biomarkers for water ecotoxicity monitoring in the future.
Article
Zoology
Chanaporn Suttinun, Thomas Kaltenbach, Jean-Luc Gattolliat, Boonsatien Boonsoong
Summary: The genus Procerobaetis Kaltenbach & Gattolliat, 2020 was reported for the first time in Thailand, with the description of a new species Procerobaetis totuspinosus sp. nov. based on larvae, distinguished by triangular spines on tergites VI-IX. COI sequences were obtained for all known species, showing genetic distances of 20%-23% between the new species and others. Morphological characters of the new species and its related species are discussed, along with a larval key for all species in the genus Procerobaetis.
Article
Entomology
Zhenxing Ma, Changfa Zhou
Summary: The phylogenetically problematic Neoephemeridae is a small family of the order Ephemeroptera. The discovery of the new genus Pulchephemera suggests that the species in this family have a more primitive position than previously thought.
Article
Zoology
Wen-Juan Li, Peng-Xu Mu, Chang-Fa Zhou
Summary: This study redescribes the enigmatic mayfly Potamanthodes nanchangi based on fresh specimens from China. It also designates a neotype for this species. By analyzing morphological characteristics, it confirms the taxonomic position of P. nanchangi in the genus Potamanthodes.
Article
Microbiology
Francesca Petriglieri, Caitlin M. Singleton, Zivile Kondrotaite, Morten K. D. Dueholm, Elizabeth A. McDaniel, Katherine D. McMahon, Per H. Nielsen
Summary: Candidatus Accumulibacter is an important polyphosphate-accumulating organism (PAO) in wastewater phosphorus removal. However, its taxonomic classification at the species level is complicated. This study provides a comprehensive reassessment of the phylogeny using genome, ppk1, and 16S rRNA gene-based approaches, resulting in the identification of novel species and clarification of the taxonomy. Additionally, the metabolic capabilities of Candidatus Accumulibacter species were explored using genome mining and in situ validation, providing insights into their niche differentiation and contribution to nutrient removal.
Article
Biodiversity Conservation
Boudjema Samraoui, Laurent Vuataz, Michel Sartori, Jean-Luc Gattolliat, Fahad A. Al-Misned, Hamed A. El-Serehy, Farrah Samraoui
Summary: A Rhithrogena population has been discovered in relict mountain streams of El Kala, Algeria, with morphological and molecular analyses identifying the species as Rhithrogena sartorii, an endemic species previously only known from neighboring Tunisia. This species' distribution, status, and life cycle are reported, with discussions on its potential role as a bioindicator in environmental monitoring.
Article
Zoology
Qing-Yi Yang, Jing Li, Chang-Fa Zhou
Summary: Two intersex individuals of Choroterpes facialis were reported in southeastern China, showing similar external morphologies but with one primarily male and the other primarily female. This is the first report of a feminized male individual. The phenomenon implies that intersexuality in mayflies may be caused by similar factors such as temperature or parasitism.
Article
Multidisciplinary Sciences
Roman J. Godunko, Javier Alba-Tercedor, Michal Grabowski, Tomasz Rewicz, Arnold H. Staniczek
Summary: Mayflies, particularly the Leptophlebiidae group, are ancient insects that have been widely studied. However, little is known about their fossil taxa. This study confirms the first finding of the genus Calliarcys in Eocene Baltic amber and provides molecular data and analysis for extant species. Amber inclusions are a valuable source of information for understanding the evolution and diversity of mayflies in the past.
SCIENTIFIC REPORTS
(2022)