Two Complete Mitochondrial Genomes of Potamanthidae (Ephemeroptera): Genome Features and Phylogenetic Implications

Diversity, Год журнала: 2025, Номер 17(3), С. 164 - 164

Опубликована: Фев. 26, 2025

The family Potamanthidae is widely distributed across the Holarctic and Oriental regions, with nymphs often utilized as bioindicators for water pollution human-induced environmental disturbances. However, limited mitochondrial genomes (mitogenomes) have been reported this family. This study presents first complete genome sequences of two species, Potamanthus longitibius Rhoenanthus youi. mitogenome sizes were 15,430 bp 15,232 bp, A + T contents 68.79% 66.75%, respectively. most abundant amino acids phenylalanine (Phe), isoleucine (Ile), glycine (Gly), alanine (Ala), leucine (Leu2) showing highest relative synonymous codon usage (RSCU) value. analysis tRNA secondary structures revealed high conservation among tRNAs encoded on H-strand. Phylogenetic reconstruction, incorporating 40 species from 13 families Ephemeroptera, confirmed monophyly all supported a sister group relationship between Ephemeridae. Additionally, sequence previously identified sp. JZ-2021 was reassigned to genus Potamanthus. provides valuable insights into evolutionary relationships within lays foundation future phylogenetic taxonomic research.

Язык: Английский

A new species of Choroterpes Eaton, 1881 (Ephemeroptera: Leptophlebiidae) from the River Cauvery, Karnataka, India

Zootaxa, Год журнала: 2025, Номер 5609(2), С. 151 - 173

Опубликована: Март 19, 2025

Choroterpes (Euthraulus) kanagae sp. nov. is described based on larvae and male imago, collected from the River Cauvery, Karnataka, India. The new species differentiated other known of subgenus Euthraulus Barnard, 1932 by following combination characters: posterior margin abdominal terga I-VII with a dark brown band; tergalius I absent; dorsal lamella VII two terminal processes; costal projection hind wing acute; segment gonostylus slender without inner-apical angle; penis slender, elongated, little longer than ½ length. Comparison imaginal characters Indian are provided. Mitochondrial cytochrome oxidase subunit (COI) gene was amplified larva adult, compared published sequences related species.

Язык: Английский

Morpho-Molecular Discordance and Cryptic Diversity in Jumping Bristletails: A Mitogenomic Analysis of Pedetontus silvestrii (Insecta: Archaeognatha: Machilidae)

Insects, Год журнала: 2025, Номер 16(5), С. 452 - 452

Опубликована: Апрель 25, 2025

Archaeognatha (bristletails) represent an evolutionarily significant but understudied insect group. Notably, the morphological identification method proposed by Mendes for has certain limitations, which may lead to underestimation or misidentification of some cryptic species. To address this issue, we employed integrated strategy that combines and molecular methods. Therefore, study aimed (1) identify diversity within Pedetontus silvestrii using mitogenomic data; (2) clarify phylogenetic relationships among lineages; (3) estimate divergence times key taxonomic splits. We analyzed mitochondrial genomes from six P. populations (Liaoning, Jilin, Hebei Provinces) alongside 14 published genomes. Key findings include following: Integrative analyses genetic distances, reconstruction, bPTP-based species delimitation, time estimation collectively revealed four distinct lineages silvestrii. Machilidae Machilinae were non-monophyletic, whereas Petrobiellinae showed close affinity Meinertellidae. originated ~301.19 Mya (Late Carboniferous); Machilinae–Petrobiinae split occurred approximately 153.99 (Jurassic). This underscores critical importance analysis in elucidating biodiversity, while emphasizing necessity integrating with characterization comprehensive delineation future investigations.

Язык: Английский