ORDERS OF INSECTS. 
25 
A A. 
TABLE OF THE ORDERS OF INSECTS. 
Section 1st. Mnndibulata, or Gnawing Insects . — Mouth composed of 
jaws and mandibles. 
A. Upper wings of a horny or leathery consistency; under wings 
membraneous. 
H. Upper wings horny, and usually indexible ; under wings folded 
both lengthwise and crosswise ; inactive in the pupa state : 
COLEOPTKRA. 
B B, Upper wings coriaceous, or like parchment; under wings 
folded lengthwise only; active in all their stages : 
Orthoptera. 
All four wings membraneous and transparent. 
U. Wings with many branching veins, and usually many cross- 
veins; abdomen without an ovipositor. .. .Neuroptera. - 
U C. Wings with comparatively few veins; abdomen of the fe- 
males terminating in an ovipositor or a sting: 
ilYMENOPTERA* 
Section 2d. Haustellata , or Suolcing Insects.— The mouth consolidated 
into a proboscis or sucker. 
A. Wings four. 
H. Wings covered with bran-like scales Lepidoptera. 
B B. Wings naked. 
C. Upper wings of the same texture throughout, not lapping- 
over each other, dedexed or roof-shaped when at rest : 
. Homoptera. 
(j 0. Upper wings coriaceous at base, membraneous at tip, lap- 
ping one over the other at the tip, and lying flat upon 
the abdomen when at rest IIetkroptera. 
A a. Wings two, membraneous Diptera! 
r) 
