@article {187, title = {Description of larvae of Japanese Macronychini (Coleoptera: Elmidae: Elminae)}, journal = {Zootaxa}, volume = {4859}, year = {2020}, pages = {195{\textendash}227}, abstract = {

Larvae of 15 species of Macronychini, subfamily Elminae, belonging to the genera Sinonychus J\äch \& Boukal, Paramacronychus Nomura, Zaitzeviaria Nomura, Zaitzevia Champion, and Urumaelmis Sat\ô 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 \& Sat\ô, Zaitzevia elongata Nomura, Zaitzevia aritai Sat\ô, Zaitzevia yaeyamana Sat\ô, Zaitzevia awana (Kôno), Zaitzevia nitida Nomura, Zaitzevia tsushimana Nomura, and U. uenoi (Nomura) are described for the first time.

}, keywords = {aquatic beetle, Byrrhoidea, Dryopoidea, immature stage, Oriental Region, Palaearctic Region, riffle beetle}, author = {M. Hayashi and Y. Kamite} } @article {166, title = {Two new species of the genus Zaitzevia Champion, 1923 from China (Coleoptera: Elmidae: Macronychini)}, journal = {Zootaxa}, volume = {4852}, year = {2020}, pages = {231{\textendash}238}, abstract = {

Two new riffle beetles of the genus Zaitzevia Champion, 1923: Z. chenzhitengi sp. nov. from Sichuan Province and Z. xiongzichuni sp. nov. from Yunnan Province are described from China. Habitus and other diagnostic features of the new species are described and illustrated. Habitat information and collection data of the new species are also provided.

}, keywords = {China, Elmidae, Macronychini, new species, Sichuan Province}, doi = {https://doi.org/10.11646/zootaxa.4852.2.8}, author = {R.-X. Jiang and S. Wang} } @article {165, title = {Hexacylloepus Hinton, 1940 rises again; 18 new species of a neglected genus (Coleoptera: Byrrhoidea: Elmidae)}, journal = {Zootaxa}, volume = {4819}, year = {2020}, pages = {006{\textendash}048}, abstract = {

The genus Hexacylloepus extends from the Neotropical region to the southwestern United States of America. At present, 25 species are known from 20 countries, with no new species proposed since 1972. In this paper, we describe and illustrate 18 new species (H. barrae; H. calori; H. casariae; H. froehlichi; H. geiseri; H. grandis; H. iassu; H. keitai; H. maierae; H. manauara; H. metapa; H. phalluspilosus; H. shorti; H. taylorae; H. thoracica; H. tibialis; H. ubirajarai; H. zaninii), from eight countries and give the first records of the genus from Suriname and Guyana.

}, keywords = {aquatic beetles, morphology, Neotropical, riffle beetles, taxonomy}, doi = {https://doi.org/10.11646/zootaxa.4819.1.2}, author = {T.T.S. Polizei and M.V.L. Barclay and P.d.C. Bispo} } @article {164, title = {The Neotropical genus Portelmis Sanderson, 1953 (Coleoptera: Elmidae): three new species, new records and updated key}, journal = {Zootaxa}, volume = {4810}, year = {2020}, pages = {452{\textendash}467}, abstract = {

Elmidae is one of the most diverse families of aquatic beetles, with more than 1500 species in 151 genera. The Neotropical genus Portelmis formerly comprised five species known from Central and northern South America, divided into two species groups. Three new Brazilian species from the nevermanni group are described and illustrated here: Portelmis vanini sp. nov., Portelmis krolowi sp. nov. and Portelmis fusariae sp. nov. New species records for the North, Central-West and Southeast of Brazil are presented.We also provide first SEM images and an updated key for Portelmis species.

}, keywords = {aquatic insects, riffle beetles, South America, taxonomy}, doi = {https://doi.org/10.11646/zootaxa.4810.3.3}, author = {T.T.S. Polizei and A.S. Fernandes} } @article {159, title = {A new species of the genus Graphelmis DEL{\`E}VE, 1968 from China (Coleoptera: Elmidae)}, journal = {Zootaxa}, volume = {4728}, year = {2020}, pages = {483{\textendash}488}, abstract = {

Graphelmis dulongensis sp. nov. is described from Yunnan, China. Photos of habitus and male genitalia are given.

}, keywords = {China, new species, riffle beetles, taxonomy, Yunnan}, doi = {https://doi.org/10.11646/zootaxa.4728.4.7}, author = {X. Dong and D. Bian} } @article {158, title = {A new species of Macrelmis Motschulsky, 1859 (Coleoptera: Elmidae) and new records of Elmidae from Roraima State, northern Brazil}, journal = {Zootaxa}, volume = {4718}, year = {2020}, pages = {277{\textendash}284}, abstract = {

A new species of Macrelmis Motschulsky, 1859 (Macrelmis rodrigoi sp. nov.) is described and illustrated based on specimens found in mountainous areas of the northern Roraima State, Brazil. Pagelmis amazonica Spangler, 1981, Potamophilops bostrychophallus Maier, 2013 and Stegoelmis geayi Spangler, 1990 are recorded in Brazil for the first time and new records for Gyrelmis obesa Hinton, 1940, Macrelmis thorpei Hinton, 1945 and Neolimnius palpalis Hinton, 1939 are presented.

}, keywords = {aquatic insects, entomology, rifle beetles, South America, taxonomy}, doi = {https://doi.org/10.11646/zootaxa.4718.2.9}, author = {M.d.L.S.d. Almeida and A.S. Fernandes and R. Boldrini} }