Male adult of Chaetocladius montlibanus sp. n. is described based on material collected in glacial karstic springs at the upper basin of the River Beirut (central-Lebanon, Mount Sannine, alt. 1700-1500 m). In the absence of morphological resemblance with any of the known Chaetocladius species, C. montlibanus sp. n. appears to key in a separate mono-specific group: the montlibanus-group. Nevertheless, the new species is separated from the other congeners by a combination of the following distinctive characters: clypeus trapezoidal, bearing 55 setae in 7 rows; palpomere 3 with one pointed sensilla coeloconica; anal point triangular, hyaline, bare, ending with a rounded apex; virga small, bell-like shaped; inferior volsella bilobed to large lobe-like shaped, apex rounded; gonostylus linearly elongate, posterior part rounded; crista dorsalis well developed, bearing distinct striations; megaseta typically truncate. Remarks and some associated species are highlighted.
Ephemera 27 : 182-188 (7 pages)
Chaetocladius montlibanus sp. n., a glacial relict species occurring in karstic springs at the Sannine Mount in Lebanon (Diptera, Chironomidae, Orthocladiinae)
-
Reçu le 21 juillet 2026 -
Accepté le 27 octobre 2026 -
Publié le 12 novembre 2026
taxonomy
new species
conservation
Espèces décrites :
-
Chaetocladius montlibanus
Moubayed, 2026
LSID894334AF-5347-4191-9DD6-4CCBC7745C85
French translation
Chaetocladius montlibanus sp. n., une espèce relique glaciaire de sources karstiques du Mont Sannine au Liban (Diptera, Chironomidae, Orthocladiinae)
taxonomie
nouvelle espèce
conservation
Télécharger le PDF (438 Ko)