01923nas a2200133 4500008004100000245014100041210006900182520143200251100001801683700001601701700001501717700001301732856004401745 2021 eng d00aMolecular phylogeny of Elmidae (Coleoptera: Byrrhoidea) with a focus on Japanese species: implications for intrafamilial classification0 aMolecular phylogeny of Elmidae Coleoptera Byrrhoidea with a focu3 a

Elmidae (Coleoptera: Byrrhoidea) comprises diverse groups of specialized aquatic beetles, but the phylogenetic positions of the intrafamilial taxonomic groups remain unclear. We performed phylogenetic analyses of 26 genera and 73 elmid species and subspecies representing four of the five currently recognized tribes from Holarctic region (Japan, Europe and North America) using sequence data from up to 585 ultraconserved elements (UCEs). The UCE-based phylogenetic trees inferred by both maximum-likelihood and Bayesian inference methods resolved most of the phylogenetic relationships with high support. Our results indicate that a revised classification for the intrafamilial taxonomic groups in Elmidae is necessary. We also examined the correspondence of the character states of ten adult and larval morphological traits to the phylogeny and identified several traits that are potentially useful for defining intrafamilial taxonomic groups in Elmidae. Based on the molecular phylogeny and morphology of adults and larvae, Gonielmis Sanderson syn. n. and Optioservus Sanderson syn. n. are synonymized with Heterlimnius Hinton. Nomuraelmis Satô syn. n. was also synonymized with Stenelmis Dufour. A revised checklist and an identification
key to the species groups are provided for Heterlimnius.

1 aKobayashi, T.1 aHayashi, M.1 aKamite, Y.1 aSota, T. uhttps://elmidae.myspecies.info/node/18901496nas a2200217 4500008004100000245008200041210006900123300001400192490000900206520085900215653001901074653001501093653001501108653001901123653002001142653002301162653001801185100001601203700001501219856004401234 2020 eng d00aDescription of larvae of Japanese Macronychini (Coleoptera: Elmidae: Elminae)0 aDescription of larvae of Japanese Macronychini Coleoptera Elmida a195–2270 v48593 a

Larvae of 15 species of Macronychini, subfamily Elminae, belonging to the genera Sinonychus Jäch & Boukal, Paramacronychus Nomura, Zaitzeviaria Nomura, Zaitzevia Champion, and Urumaelmis Satô were described based on scanning electron microscope (SEM) observation. Larvae of eleven of these species, S. tsujunensis Yoshitomi & Nakajima, Zaitzeviaria gotoi (Nomura), Zaitzeviaria brevis (Nomura), Zaitzeviaria kuriharai Kamite, Ogata & Satô, Zaitzevia elongata Nomura, Zaitzevia aritai Satô, Zaitzevia yaeyamana Satô, Zaitzevia awana (Kôno), Zaitzevia nitida Nomura, Zaitzevia tsushimana Nomura, and U. uenoi (Nomura) are described for the first time.

10aaquatic beetle10aByrrhoidea10aDryopoidea10aimmature stage10aOriental Region10aPalaearctic Region10ariffle beetle1 aHayashi, M.1 aKamite, Y. uhttps://elmidae.myspecies.info/node/187