Deraeocor-s ( Heteroptera, Miridae) 8') 



3. Hind tibiae without distinct spines, clothed only with prominent black 



hairs . . (Exotic group containing genotype oliraccus Fabr.) 



Hind tibiae with a row of distinct spines on the anterior face . . 4 



4. Pronotum distinctly margined ; eyes with hind margins practically in 



line with base of head, nearly in contact with collar; segment I of the 

 antennae surpassing tip of tylus by less than half its length 



Group I. (subgenus Camptobrochis Fieb.) p. 89 

 Pronotum innnarginate ; eyes sloping forward away from collar; seg- 

 ment I of antennae extending beyond tip of tylus by more than one- 

 half its length (jroup VH. p. 189 



5. Dorsum practically glabrous, at most only sparsely and finely pubescent 



(not rubbed specimens), rarely a few hairs at anterior angles of 

 pronotum; hind tibiae with a row of spines or heavily chitinized hairs 

 on the anterior face .......... g 



Dorsum heavily pubescent or hairy, at least with long hairs at anterior 

 angles of pronotum ; hind tibiae without distinct spiiles on the anterior 

 face, usually rather closely set with prominent long hairs 



Group VI. (subgenus Eiiannosiis Rent. p. 173 



6. Form elongate (width not equal to one-half the length) Group HI. p. 118 

 Form broad oval, strongly convex (width greater than or equal to at 



least one-half the length of the insect) . . Group IV. p. 145 



7. Scutellum punctate Group II. p. Ill 



Scutellum impunctate ...... Group V. i). 150 



In an effort to const rnct keys which do not refer to the genitalia, 

 and that may be nsed to determine both sexes, color characters have 

 necessarily been introduced. A series of specimens have been available 

 for study for most of the species which are likely to be confused and 

 thus it is hoped that the limits of variation have been correctlv esti- 

 mated. The keys will at least serve for a close approximation of the 

 species and for the person interested in accurate determinations th:' 

 genitalia may be referred to for hnal confirmation. In the kevs it 

 was not always found convenient to have the species work out in order 

 of their relationshij) but in the body of the text the species are arranged 

 according to their natural sequence, in so far as this was possible to 

 determine after, due consideration of all available characters. 



KEY TO THE SPECIES OE (iROUP I (subgenus Cani[^fobrochis) 



The .species of this group are all of small size, the dorsum is 

 glabrous and shining, scutellum punctate, collum broadly exposed, ver- 

 tex carinate, and several if not all the species pass the winter in hiber- 

 nation as adults. The form of the left genital clasper is rather dis- 

 tinctive in that the internal arm tapers gradually to a point, therefore 

 without a barlj or hook at tip such a? is found in all other groups of 



