Original incorrect spelling, see Ischnocampa. From Pitkin & Jenkins, 2020: Felder, 1874, in his script legends to his plates, did not distinguish between the capital letters I and J; the spelling Ischnocampa has been adopted by authors.
Pitkin, B.; Jenkins, P. Butterflies and moths of the world. Generic names and their type-species. Natural History Museum, London (2020 version). available online athttp://www.nhm.ac.uk/our-science/data/butmoth/