No. 34-] IIEMIPTERA OF CONNECTICUT: MIRTDAE. 429 



Tribe PHYLINI. 



Key to Genera. 



1. Pubescence normal, composed of a single type of fine, chiefly erect 



pubescent hairs, sometimes nearly glabrous 2 



Pubescence composed of closely appressed, tomentose or scale-like 

 deciduous hairs, and usually interspersed with more erect pubes- 

 cent hairs 7 



2. Head more or less produced, facial angle (when viewed from the 



side, the angle formed by the contour line of the tylus and lower 

 margin of the buccula) less than a right angle; length of antennal 



segment ii greater than width of head 4 



Head not or scarcely produced, facial angle forming a right angle 

 or practically so; length of antennal segment ii not or scarcely 

 exceeding width of head 3 ' 



3. Pseudarolia minute, not extending beyond middle of claw (fig. 



49 : 9) ; small, pale to yellowish species, the legs spotted 



(p. 430) Campylomma 

 Pseudarolia involving the claws to the apices or nearly so (fig. 

 49 : I ) ; small black species but with legs more or less pale . . 



(p. 430) Chlamydatus 



4. Vertex with an impression each side near margin of eye; hind 



tarsi with second and third tarsal segments subequal 



(p. 460) Microsynamma 

 Vertex without impression at each side; hind tarsi with third 

 segment slightly shorter than the second 5 



5. Tibiae pale, spines dark but without black spot at base 6 



Tibiae chiefly pale, spines with black spot at base, or if not, then 



the dorsum and tibial spines also pale. . . . . . (p. 431) Plagiognathus 



6. Antennal segment ii incrassated, at least equal in thickness to seg- 



ment i ; color chiefly reddish but hemelytra and venter darkened 



with fuscous (p. 459) Rhinocapsus 



Antennal segment ii more slender, never attaining the thickness of 



segment i ; body chiefly blackish but sometimes with pale 



(p. 454) Microphylellus 



7. (i) Antennal segment ii strongly incrassated, the female of 



Criocoris excepted, but in that case black in color and the head 



sharply produced beyond the eyes 8 



Antennal segment ii slender in both sexes, never exceeding thick- 

 ness of segment i 9 



8. Head sharply produced beyond the eyes ; segment ii strongly 



incrassated in the male, slender in the female .... (p. 460) Criocoris 

 Head not or scarcely produced, inclined or subvertical in position; 

 segment ii incrassated in both sexes (p. 461) Atractotomus 



9. Pseudarolia attached only at base of claw, tips free and extending 



to middle of claw (fig. 49: 2) ; greenish yellow species with 

 fuscous on hemelytra (p. 462) Reuteroscopus 



Pseudarolia minute, connate and not extending free for a space 



greater than the base of attachment 10 



10. Antennae short, length of segment ii not equal to width of head; 

 short ovate forms, clothed with closely appressed scale-like hairs 

 but interspersed with erect pubescent hairs ; tibiae black, strongly 

 spinose (p. 470) Lepidopsallus n. gen. 



Antennae longer, length of segment ii equal to or greater tlian 

 width of head; pubescence variable but always composed of two 

 types of hairs ; tibiae sometimes dark but more frequently pale 

 and spotted with darker (p. 462) Psallus 



