Key to the families of Phasmida
    
1. Middle and hind tibiae with ventro-apical sunken areola. (suborder Areolatae). . . . . . . . . . . . . . . . 
3
- Middle and hind tibiae without ventro-apical sunken areola. (suborder Anareolatae). . . . . . . . .
2
2.
 
 

 

Antennae filiform and indistinctly segmented, especially beyond middle, longer than fore femora and often longer than body length; if shorter than fore femora and distinctly joined, then ventral surface of all femora smooth; ventral carinae of middle and hind femora not evenly serrated, usually only with few distal teeth or unarmed. . . . 
 
 

Heteronemiidae

-
 

 

Antennae powerfnul and distinctly segmented, usually shorter than fore femora, and then femora of females are distinctly serrated dorsobasally, or longer than fore femora, but never as long as body, and then ventral carinae of middle and hind femora distinctly and evenly serrated. . . . . . . . . . 
 

Phasmatidae

3. Median segment as long as or longer than metanotum and fused with it. . . . . . . . . . . . . . . . . 4
- Median segment shorter than metanotum and not fused with it; apterous. . . . . . . . . . . . . . . . . . . . .  Bacillidae
4 Antennae long in both sexes; metanotum longer than wide, not leaf-like; margins of abdomen without lateral outgrowths. . . . . . . . . . . . . . . . . .
Pseudophasmatidae (Presbistus)
-
 
 

 

Antennae of females barely as long as head, those of males longer and bristly; metanotum not longer than wide; leaf-like; margins of abdomen strongly foliaceously dilated; leaf-like dilations also on femora and sometimes tibiae; elytra of females often covering almost entire abdomen, those of males scarcely longer than thorax. . . . . . . . . . . . .
 
 

Phylliidae


 
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