NOMEN: Meganeuroptera Crampton 1916: 297 [G.C. Crampton. The lines of descent of the lower pterygotan insects, with notes on the relationships of the other forms. – Entomological News, 1916, 27 (7): 297-307]
ORIGINAL LISTED
MEMBERSHIP (Crampton 1916):
Sialis + Corydalus + Chauliodes, etc. 
SENIOR CIRCUMSCRIPTIONAL SYNONYM:
= Semblides Latreille 1825 (non Semblis/fg)
JUNIOR
CIRCUMSCRIPTIONAL
SYNONYM:
= Eumegalopterida Krausse & Wolff 1919
= Megalopterida Pearce 1936
NON-MONOSEMANTIC CIRCUMSCRIPTIONAL SYNONYM (distinctly without †Parasialis):
= Neomegaloptera Engel
2004
TYPIFIED NAME IN BASIC FORMAT: Corydalus/f=Chauliodes/g (incl.
Sialis)
TYPIFIED
NAMES IN USE: Corydalides, Corydalida
MODERN
STATUS: 
the valid, the oldest name of a generally accepted taxon.
Systematic position and classification of Meganeuroptera:
| Neuropteroidea Birostrata Rhaphidioptera Meganeuroptera Eumegaloptera Nothomegaloptera |
COMMENTS. Some authors wrongly use for Meganeuroptera junior typified name(s) Sialis/fg [f: Sialida Leach 1815; g: Sialis Latreille 1802, typus Hemerobius lutarius Linnaeus 1758]: Sialidae, Sialina, Sialidiformes, Sialidae, Sialides, Sialoidea, Sialida.
Kluge
2010 BioNomina
Dual-Nom
:
Currently the taxon consisting of Eumegaloptera and Nothomegaloptera is usually called “Megaloptera”, the name also used sometimes to refer to the taxon Eumegaloptera + Nothomegaloptera + Rhaphidioptera (Tillyard 1918, Hennig 1953, Mickoleit 1969, Hinton 1981). Originally the name Megaloptera Latreille 1802 was proposed for a family consisting of the genera Chauliodes, Corydalus, Sialis, and Raphidia, and fitting Emmenognatha Börner 1904 in circumscription. Later on, Latreille (1807, 1810, 1825) called “Megaloptera” a smaller taxon consisting of Chauliodes, Corydalus, and Sialis only, i.e. what was later named Meganeuroptera Crampton 1916. As the name Megaloptera is currently used both ways of which only the first is circumscriptionally correct, its extensive alternative use is misleading. Burmeister (1839) used the name “Megaloptera” for Birostrata.
The oldest circumscriptional name whose original circumscription fits the taxon that includes Eumegaloptera and Nothomegaloptera but excludes Rhaphidioptera is Meganeuroptera Crampton 1916. It is derived from ‘mega’ + ‘Neuroptera’ and should be not confused with its junior homonym Meganeuroptera Tillyard 1918 (derived from ‘Meganeura’ + ‘ptera’) (see below).
REFERENCES:
Burmeister H. 1832–1855. Handbuch der Entomologie. Berlin (G. Reimer), Bd. 1–5. Bd. 1, Allgemeine Entomologie (1832). Bd. 2, Besondere Entomologie: Abt. 1 (1835); Abt. 2.: Hf. 1 (1838); Hf. 2 (1839). Bd. 3 (1842). Bd. 4: Abt. 1 (1844); Abt. 2 (1855). Bd. 5 (1847).
Crampton G. C. 1916. The lines of descent of the lower pterygotan insects, with notes on the relationships of the other forms. Entomological News, 27 (6): 244–258; (7): 297–307.
Hennig W. 1953. Kritische Bemerkungen zum phylogenetischen System der Insecten. // Beiträge zur Entomologie, 3: 1–85.
Hinton H.E. 1981. Biology of insect eggs. Pergamon Press. Vol. 1: 1–473; vol. 2: 475–778; vol. 3: 779–1125.
Latreille P.A. 1802–1805. Histoire naturelle, générale et particulière des Crustacés et des Insectes. Tomes 1–14. Paris.
Latreille P.A. 1806–1809. Genera Crustaceorum et Insectorum secundum ordinem naturalem in familias disposita, iconibus exemplisque plurimis explicata. Paris & Argentorati (Amand Koenig). Tomus 1 (1806): 1–302, pl. 1–16; Tomus 2 (1807): 1–280; Tomus 3 (1807): 1–258; Tomus 4 (1809): 1–399.
Latreille P.A. 1810. Considérations générales sur l’ordre naturel des animaux composant les classes des Crustacés, des Arachnides, et des Insectes. Avec un tableau méthodique de leurs genres, disposés en familles. Paris (F. Schoell): 1–444.
Latreille P.A. 1825. Familles naturelles du règne animal, exposées succinctement et dans un ordre analytique, avec l’indication de leurs genres. Paris (Baillière): 1–570.
Mickoleit G. 1969. Vergleichend-anatomische Untersuchungen an der pterotorakalen Pleurotergalmuskulatur der Neuropteria und Mecopteria (Insecta, Holometabola). // Zeitschrift für Morphologie der Tiere, 64 (2): 151–178.
Tillyard R.J. (1918–1919) The panorpoid complex. Proceedings of the Linnean Society of New South Wales: Part 1, 1918, 43 (170): 265–319; Part 2, 1918, 43 (171): 626–657; Part 3, 1919, 44 (175): 533–718.