From the point of view of the degree of metamorphosis, insects can be divided ...
classis
Insecta 
= Hexapoda 
(:26)
subclassis Synaptera (:27)
subclassis Pterygota Gegenbaur 1877
(:27)
I. Heterometabola (:597)
1. Manometabola 
[Gr. manos – scanty] (:597)
ordo Orthoptera
ordo Dermaptera
ordo Platyptera
ordo Thysanoptera
ordo Hemiptera
(Coccidae excepted)
2. Heremetabola
[Gr.: hrema – quiet] (:597)
... Cicada
3. Hemimetabola Brauer
ordo Perlaria
Perla = Plecoptera
ordo Odonata
ordo Plectoptera
= Ephemeridae Ephemera
II. Holometabola
(:598) = Metabola
(:597)
ordo Neuroptera
ordo Coleoptera
ordo Mecoptera
ordo Trichoptera
ordo Lepidoptera
ordo Siphonaptera
ordo Diptera
ordo Hymenoptera