Rheotanytarsus Thienemann et Bause (Diptera: Chironomidae) from Central America and Mexico

Abstract

Eleven new species of Rheotanytarsus Thienemann et Bause from Central America and Mexico are described: R. baculus sp. n., R. calacmulensis sp. n., R. foliatus sp. n., R. guanacastensis sp. n., R. hanseni sp. n., R. kusii sp. n., R. nuamae sp. n., R. scutulatus sp. n., R. subtilis sp. n., and R. thunesi sp. n. as males only and R. ramirezae sp. n. as male and pupae. Two species are redescribed: R. exiguus (Johannsen) as male, pupae and larvae; and R. meridionalis (Johannsen) as male only. Keys to males and known pupae of Central American and Mexican Rheotanytarsus are given.

A revised, annotated checklist of Mexican non-biting midges (Diptera, Chironomidae)

“…A genus with ~ 100 species distributed in all zoogeographic regions except Antarctica. The Central American and Mexican species were reviewed by Kyerematen and Andersen (2002) ; the Rheotanytarsus pellucidus group was revised by Kyerematen et al (2000) . Larvae are rheobiontic, occurring in streams, large rivers, and the littoral of lakes where wave action simulates the action of flowing water ( Epler et al 2013 ).…”

“… Rheotanytarsus foliatus Kyerematen & Andersen, 2002: 35 [Costa Rica]. Kyerematen and Andersen (2002 : 35) [Nuevo León State]. NT .…”

“…During the last two decades, several new species have been described based on material from Mexico ( Kyerematen et al 2000 ; Kyerematen and Andersen 2002 ; Wang et al 2006 ; Vinogradova 2008 ; Andersen et al 2010 , 2016 ; Wiedenbrug et al 2012 ; Pinho et al 2013 ; Acosta et al 2017 ; Pinho and Andersen 2021 ; Andersen 2023 ). Several species and genera have also been recorded for the first time from Mexico, especially in connection with surveys of particular habitats like the aquatic fauna in spring-fed tropical canyons in the southern Sonora desert ( Bogan et al 2014 ), or subfossil Chironomidae in surface sediments of the sinkholes of the Yucatan Peninsula ( Hamerlík et al 2018 ).…”

Towards the diversity of non-biting midges of the tribe Tanytarsini from Eocene Baltic amber (Diptera: Chironomidae)

“…hoffeinsorum combines some species-specific characters (the median vol-sella with bone-like stem bearing leaf-shaped separated lamellae) with those typical of extant species, and thus perceived as constant within the genus (the hypopygial anal tergite with the round field bearing median setae, the stout anal point with swollen apex, and the posteriorly directed superior volsella) ( Figure 3). Essential information on the systematics, zoogeography and phylogeny of the genus have been published based on extant representatives distributed worldwide Andersen and Kyerematen, 2001;Kyerematen and Andersen, 2001;Saether and Kyerematen, 2001).…”

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). 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).…”