The True Bugs 



8 Beak long and slender Saldidce 



Beak short and stout. 



Head globulous behind the eyes Henicocephalidce 



Head not so formed Reduviidce 



9 Ocelli present. Fore-thighs greatly widened Phymatidce 



Ocelli absent. Fore-thighs not greatly widened. 



Hemelytra shorter than abdomen Aradidce 



Hemelytra longer than abdomen Tingitidce 



10 Hemelytra without cuneus. Membrane with longitudinal 



veins which are sometimes indistinct 1 1 



Hemelytra with cuneus. Membrane with one or two cells 

 at base, but otherwise veinless Capsidce 



1 1 Membrane either with four or five simple longitudinal veins, 

 in which case ocelli are usually present, or with about 



eight forked veins, in which case ocelli are absent 12 



Membrane with many, usually forked, longitudinal veins 

 which are sometimes difficult to see Coreidce 



12 Membrane with four or five simple longitudinal veins 13 



Membrane with about eight forked longitudinal veins. Ocelli 

 lacking Tyrrhocoridce 



13 Head with transverse incision in front of ocelli which are 



always present Beryttdce 



Head without transverse incision. Ocelli usually present, 

 rarely lacking Lygceidce 



14 Five-jointed antennae with hidden bases. Scutellum 

 more than half the length of the abdomen, sometimes 

 flat, sometimes very convex and covering nearly the 

 whole abdomen Pentatomidce 



