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Doncricotopus bicaudatus n.gen., n.sp. (Diptera: Chironomidae, Orthocladiinae) from the Northwest Territories, Canada

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A new genus and species of Orthocladiinae, Doncricotopus bicaudatus, is described in all stages. The imago has hairy eyes and well developed pulvilli. It can be separated from Nanocladius Kieff. by means of nonprotruding eyes and by having more than two acrostichals, from Rheocricotopus Thien. & Harn. by the bare anal point proper and by having the acrostichals in the centre of scutum only. The pupa has thoracic horn and anal macrosetae as in Rheocricotopus, but other details as in Nanocladius. The larvae has a cardinal beard as in Rheocricotopus and simple S I as in Nanocladius. The similarities between Rheocricotopus and Doncricotopus are shown to be based on symplesiomorphies, those between Nanocladius and Doncricotopus on synapomorphies, with Nanocladius forming the sister genus of Doncricotopus.

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/content/journals/10.1163/187631281794709845
1981-06-01
2016-12-02

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