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From what I can deduce Conioscinella brachyptera 'does not exist'. The name has been used for a species of Conioscinella and it was acredited to Zetterstedt, [1848]. Later examination of material showed that in fact it was a species of Aphanotrigonum and the Conioscinella species was given the name zetterstedti by Andersson.
Whether the species mentioned by Von Tschirnhaus it the one species or the other, you should ask him.