@article{article_493928, title={Rheocricotopus (s. str.) costai sp. n. AND R. (s. str.) pyrenaeus sp. n., TWO RELICT SPECIES FROM GLACIAL RHEOCRENES AND STREAMS IN CORSICA AND THE EASTERN PYRENEES (DIPTERA: CHIRONOMIDAE, ORTHOCLADIINAE)}, journal={Trakya University Journal of Natural Sciences}, volume={20}, pages={35–46}, year={2019}, DOI={10.23902/trkjnat.493928}, author={Moubayed-breil, Joel and Ashe, Patrick}, keywords={Rheocricotopus (s. str.), new species, Diptera Chironomidae, glacial rheocrenes, Corsica, continental France, conservation, conservation}, abstract={<p class="MsoNormal" style="margin:0cm 0cm .0001pt;font-size:medium;font-family:’Times New Roman’;text-align:justify;"> <span lang="en-gb" style="font-size:9pt;line-height:115%;font-family:’Times New Roman’, serif;" xml:lang="en-gb">Two
new species of the genus </span> <i> <span lang="en-gb" style="font-size:9pt;line-height:115%;font-family:’Times New Roman’, serif;" xml:lang="en-gb">Rheocricotopus </span> </i> <span lang="en-gb" style="font-size:9pt;line-height:115%;font-family:’Times New Roman’, serif;" xml:lang="en-gb"> subgenus <i>Rheocricotopus </i>( <i>R. </i> <i>costai </i>sp. n. and <i>R. pyrenaeus </i> sp. n.) are diagnosed and
described, based on material collected in some glacial rheocrenes and streams
located in the high mountains of Corsica and the Eastern Pyrenees. <i>Rheocricotopus costai </i> sp. n. is
described as male and pupal exuviae, while <i>R. </i> <i>pyrenaeus </i> sp. n. is
described as male and female adults and pupal exuviae. <i>Rheocricotopus </i> <i>costai </i>sp.
n. is known from both western Corsica and the Eastern Pyrenees, while the
geographical distribution of <i>R. pyrenaeus </i>sp. n. is restricted to the protected area of the Mantet Nature Reserve
(Eastern Pyrenees). Larvae of both <i>R. </i> <i>costai </i>sp. n. and <i>R. pyrenaeus </i>sp. n. are exclusively
rheophilic being confined to lotic habitats located at high altitude (crenal
and rhithral). Apart from the presence of an additional median circular small
patch of spinules on tergite III of the exuviae, <i>R. </i> <i>costai </i>sp. n. directly
keys into the <i>effusus </i>-group on the
basis of several specific characters found in the male adult. Nevertheless, <i>R. pyrenaeus </i>sp. n. keys near both of <i>R. reduncus </i> Sæther & Schnell, 1988
(known from Finland, Norway and Russian Far East) and <i>R. tchernovskii </i> Makarchenko & Makarchenko, 2005 (known from
Russian Far East), based in particular, on the unusual shape of the superior
volsella which is inwardly markedly turned over distally. The genus <i>Rheocricotopus </i>is <i> </i>currently represented by 10 species in continental France and by 8
species in Corsica (Moubayed-Breil 2016). Consequently, the description of <i>R. </i> <i>costai </i>sp. n. and <i>R. pyrenaeus </i>sp. n.
increases the total number in the genus to 12 for continental France and to 9
for Corsica. Taxonomic remarks, discussion and comments on the ecology and
geographical distribution of the two new species are given. </span> <br /> </p> <p> </p>}, number={1}, publisher={Trakya University}