First Oriental Stempellinella species from China (Diptera: Chironomidae: Tanytarsini)

Abstract

The tanytarsine genus Stempellinella was erected by Brundin (1947), with Stempellinella saltuum (Goetghebuer, 1921) as type species. Until now, the genus has eight recorded species from the Holarctic region. Ashe & Cranston (1990) list five species in their Palaearctic catalogue. Among these, S. cuneipennis (Edwards, 1929) has only been recorded as female. Stempellinella tamaseptima from Japan was first described as Tanytarsus by Sasa (1980), and was later transferred to Stempellinella by Kobayashi (1990). Stempellinella reissi was described by Casas & Vilchez-Quero (1991) from Southern Spain, and S. leptocelloides from Ontario, Canada by Webb (1969). The latter species was originally placed in Stempellina but later examination of the type material confirms the placement in Stempellinella (T. Ekrem pers. comm.) In this paper, two new species from Southern China (Oriental Region) are described. M,    The morphological nomenclature follows Saether (1980) with the additions and corrections given by Saether (1990). The material examined was mounted on slides following the procedure outlined by Saether (1969). Measurements are given as ranges followed by a mean when there are two or more measurements, followed by the number measured (n) in parentheses. Type specimens are deposited in the Department of Biology, Nankai University, China ().

A taxonomic revision of the genusStempellinella(Diptera: Chironomidae)

“…Stempellinella brevilamellae has been recorded only from its type locality in China (Guo and Wang 2005). The immature stages and their habitat remain unknown, but the larvae probably construct small, straight transportable cases of sand and detritus like the morphologically similar species in South Africa and Japan.…”

“…Stempellinella minor (Edwards). Brundin (1947Brundin ( , 1948; Langton (1991); Langton and Visser (2003); Klink and Moller Pillot (2003); Guo and Wang (2005)…”

“…The genus was erected by Brundin (1947) based on species in Edwards' (1929) ''saltuum group'' of the genus Stempellina Thienemann and Bause in Bause (1913). Since then, new species have regularly been added to the genus, either directly as species in Stempellinella (Casas and Vilches-Quero 1991;Inoue et al 2004;Guo and Wang 2005) or as species erroneously placed in Stempellina or Tanytarsus (Freeman 1958;Webb 1969;Sasa 1980). Stempellinella cuneipennis (Edwards, 1929), originally described on an adult female, belongs to the genus Neozavrelia and was transferred to this genus by Ekrem (2006).…”