New Species ofRheotanytarsusThienemann and Bause (Diptera: Chironomidae: Tanytarsini) from Darjeeling–Sikkim, Himalaya, India, with Revised Keys to the Adult Males and Pupae of the Species of the Oriental Region

Abstract

Three new species ofRheotanytarsusThienemann and Bause are described and illustrated from India.R. nudicornusn. sp. belonging to theaquilusspecies group is described as adult male and pupa,R. spinicornusn. sp. in themuscicolagroup is described as adult male, pupa, and larva, andR. caputimberusin thetrivittatusgroup is described as adult male with damaged pupa. A possible placement and inclusion of these three new species from India and other seven species recorded from the Oriental China in the key to males of genusRheotanytarsusof Kyerematen et al. are proposed. A probable placement and inclusion of the 2 new species from India in the key to pupae ofRheotanytarsusof Kyerematen et al. are also stated. Diagnoses of themuscicolagroup andtrivittatusgroup are emended.

DNA barcodes and morphology reveal new species within the Rheotanytarsus guineensis species group from China (Diptera: Chironomidae)

“…Containing more than 100 described species, the worldwide Rheotanytarsus Thienemann & Bause, 1913 (Diptera: Chironomidae), is one of the most species-rich genera of the tribe Tanytarsini in the subfamily Chironominae (Hazra et al, 2016;Kyerematen & Andersen, 2002;Kyerematen et al, 2000;Liu et al, 2022).…”

“…Containing more than 100 described species, the worldwide Rheotanytarsus Thienemann & Bause, 1913 (Diptera: Chironomidae), is one of the most species‐rich genera of the tribe Tanytarsini in the subfamily Chironominae (Hazra et al, 2016; Kyerematen & Andersen, 2002; Kyerematen et al, 2000; Liu et al, 2022). Larvae of Rheotanytarsus are rheobiontic and usually found in large rivers, streams, and brooks, but also in the littoral of lakes (Epler et al, 2013).…”

“…The species of the genus Rheotanytarsus are plentiful in tropical rainforests (Sæther & Kyerematen, 2001; Wang et al, 2022; Yao et al, 2022). Rheotanytarsus has been revised and divided into 15 species groups and followed by a number of researchers over the last few decades (e.g., Hazra et al, 2016; Liu et al, 2022; Moubayed‐Breil et al, 2012; Qi et al, 2022). The Rheotanytarsus guineensis group was reviewed after a reasonable cladistic analysis based on morphological data (Sæther & Kyerematen, 2001).…”