Redescription of Kalligramma haeckeli Walther, 1904 (Neuroptera: Kalligrammatidae), a Jurassic paleontological icon, allows the redefinition of Kalligrammatinae

Kalligramma haeckeli Walther, 1904, the type species of the genus, is re-described based on the holotype. We find that its hind wing CuP is deeply forked. Based on this and other shared character states, Kalligrammula Handlirsch, 1919, syn. nov., and Limnogramma Ren, 2003, syn. nov., are considered subjective synonyms of Kalligramma Walther, 1904, and Oregrammatinae a synonym of Kalligrammatinae, syn. nov. The Kalligrammatinae now include Kalligramma, Sinokalligramma Zhang, 2003, Oregramma Ren, 2003, sit. nov., Abrigramma Yang et al., 2014b, sit. nov., and probably Makarkinia Martins-Neto, 1992. Only four subfamilies are well defined and valid in Kalligrammatidae, i.e., Kalligrammatinae, Liassopsychopinae, Sophogrammatinae, and Kallihemerobiinae. The kalligrammatid affiliation of Cretanallachiinae and the validity of Meioneurinae are questionable.