Coleoptera: Elmidae and Protelmidae

Two new species of the genus Dryopomorphus Hinton, 1936 from China (Coleoptera, Elmidae)

“…In the catalogue of Elmidae (Jäch et al 2016), there is no record of this genus from China, so this is the first time that the genus Dryopomorphus is reported from China formally. In this article, two new species of this genus, collected during the China Water Beetle Survey, are described.…”

“…Fourteen species of this genus were described until now (Hinton 1971, Spangler 1985, Kodada 1993, Yoshitomi and Satô 2005, Čiampor and Kodada 2006, Čiampor et al 2012, Yoshitomi and Jeng 2013, Jäch et al 2016). Yoshitomi and Satô (2005) reviewed the four species of Japan.…”

A key to Grouvellinus Champion, 1923 from mainland China with descriptions of two new species (Coleoptera, Elmidae)

“…Subsequently, Jeng and Yang (1998) made a revision of Grouvellinus occurring in Taiwan and Japan, and three new species were reported from Taiwan. A total of 36 species of Grouvellinus are known so far (Brown 1981, Jäch et al 2016, Jung et al 2014). …”

“…According to Jäch et al (2016), six species were known from mainland, China, and four species were reported from Taiwan. Jeng and Yang (1998) had already provided a key to Grouvellinus from Taiwan and Japan.…”

Discovery of swimming larvae in Elmidae (Coleoptera: Byrrhoidea)

“…In particular, riffle beetles (Coleoptera: Elmidae), with more than 1,500 species worldwide (Jäch et al . ), are well‐adapted to aquatic life, and the adults and larvae usually live in running water. However, elmid adults and larvae are not known to swim.…”