118 Eighteenth Report State Entomologist of Minnesota — 1920 



Pronotum: length 1.28 mm., width at base 2.05 mm., anterior angles .83 

 mm., collar .68 mm. ; black, opaque ; disk punctate, more deeply and coarsely 

 behind the calli and laterally, longly pale pilose, more heavily at the sides, lat- 

 eral margins distinct, nearly straight, distinctly narrowed at anterior angles, 

 little wider than the collar; calli slightly convex, confluent, disk of each beset 

 with four or five pilose hairs, a pair of large deep punctures just behind, one 

 set each side of the median line ; black, shining, basal margin narrowly pale ; 

 propleura black, coarsely punctate, pale bordering the coxal cavity, opaque each 

 side of the coxal cleft ; xyphus nearly flat, lateral margins much produced or 

 carinate bordering the coxal cavity, black, opaque, pale in front on collar. 

 Scutellum black, convex, apex sharply depressed and white ; rather indistinctly 

 rugose-punctate (badly injured by the pin, which prevents accurate judgment 

 of the punctate character). Sternum and pleura black, granulate and somewhat 

 wrinkled ; ostiolar peritreme white. 



Hemelytra: width 2.51 mm.; elongate, black, somewhat translucent, rather 

 coarsely punctate ; palely pilose, more thickly on embolium and base of corium. 

 Cuneus black, pubescent, punctures distinct, pale spot at outer basal angle. 

 Membrane infuscated, the brachium and within the areoles slightly darker, a 

 clear spot bordering tip of cuneus. 



Legs: black, tips of coxae and bases of trochanters pale; femora rather slen- 

 der, tibiae biannulate with pale, devoid of spines except at apices but beset 

 with several prominent hairs ; tarsi black, slightly paler on the two basal 



segments which are practically sub- 

 equal in length ; claws slender, trans- 

 lucent, not toothed at base, arolia sim- 

 /^ \^^ W^ ulating fine bristles, pale translucent, 

 inclined forward away from tarsus, 

 U/ VC n I nearly parallel but converging at tips. 



Fig. 6. Deraeocoris diveni, male genital Venter: black, shining, rather 

 claspers. a, left clasper, lateral aspect ; b, 



internal arm of left clasper ; c, right clasper, sparsely pale pubescent ; genital clasp- 

 lateral aspect. / c' /'\ ^■ ^- ,■ r.i 



ers (hg. 6) distmctive of the species. 



Holotype: $ August 26, 1915, Canon Camp (alt. 7,700 ft.), 

 Yellowstone Park, Wyoming (E. L. Diven) ; author's collection. 



This species is named in honor of the young and enthusiastic col- 

 lector, Mr. Emerson L. Diven who lost his life August 7, 1919. in 

 an airplane accident while scouting in the interest of the pink boll- 

 worm control in Texas. 



Only the single specimen has been seen by the writer but it is very 

 likely that more material can be obtained by beating conifers at the 

 type locality or at similar altitudes in that general region. 



KEY TO THE SPECIES OF GROUP III 



1. Tibiae banded witli fuscous or pale ....... 2 



Tibiae uniformly pale or yellowish ....... 9 



2. Membrane with a distinctly rounded fuscous spot on the apical half, 



frequently connected at base by a fuscous streak extending down from 



