Concise hierarchy

(Kingdom) Animalia - (Phylum) Arthropoda - (Class) Insecta

Phylogeny

Questionably Paraphyletic/Ancestral (para)

Ref: D. Grimaldi & M.S. Engel, 2005: 261.

Current position

Psocodea (Superorder) Hennig, 1966

Ref: D. Grimaldi & M.S. Engel, 2005: table 4.1.

Alternative positions

Hemimetabola (Division)	Ref: T.I. Storer et al., 1979: 591.
Hemipterodea (Superorder)	Ref: R.C. Brusca & G.J. Brusca, 1990
Insecta (Class) Linnaeus, 1758	Ref: Z.-Q. Zhang, 2013: 21.
Neoptera (Subclass) Martynov, 1923	Ref: R.S. Boardman et al., 1987
Paraneoptera (Subdivision)	Ref: R.W. Poole et al., 1997: 16. [implicit]
Pareneoptera (Subdivision) nom. null.	Ref: R.W. Poole et al., 1997: 16.

Historical positions

Insecta (Class) Linnaeus, 1758	Ref: Z.-Q. Zhang, 2013: 21.
Insecta (Class) Linnaeus, 1758	Ref: Z.-Q. Zhang, 2011: 101.
Psocodea (Superorder) Hennig, 1966	Ref: D. Grimaldi & M.S. Engel, 2005: table 4.1.
Exopterygota (Division) Sharp, 1899	Ref: M. Chinery, 1997
Pareneoptera (Subdivision) nom. null.	Ref: R.W. Poole et al., 1997: 16.
Hemipterodea (Superorder)	Ref: R.C. Brusca & G.J. Brusca, 1990
Neoptera (Subclass) Martynov, 1923	Ref: R.S. Boardman et al., 1987
Hemipterodea (Superorder)	Ref: C.N. Smithers, 1982: 394-395.
Hemimetabola (Division)	Ref: T.I. Storer et al., 1979: 591.
Psocia (Superorder)	Ref: B. Grzimek, 1973-1975

Number of Subtaxa

2024	Available in Systema Naturae 2000	38f;139g;129s;2ss; †1g
1989-present	Systema Naturae 2000	[3so];37f;224g;2580s
2013	Z.-Q. Zhang: 21	5,732*[5,611]s; †121s
2011	Z.-Q. Zhang: 101	5,720s
1990	R.C. Brusca & G.J. Brusca	~2,600s
1982	W.L. Brown Jr.: 395	[3so];37f;224g;2580s
1982	C.N. Smithers	[3so]37f224g2580s
1979	T.I. Storer et al.	13f;1100s
1972	C.N. Smithers	[24f]