No. 34-] HEMIPTERA OF CONNECTICUT: MIRIDAE. 43 1 



Plagiognathus Fieber. 

 Key to Species. 



1. Tibial spines dark and with black spot at base of each, sometimes 



obsolete apically 2 



Tibial spines pale, without black 'spots at base ; general color pale, 

 with two black lines on antennal segment i and a slender black 

 line on segment ii, also the dorsal and the ventral margins of 

 femora with a black line forming apically (p. 443) nigrolineatus n. sp. 



2. Antennal segment ii dark fuscous to black, sometimes slightly paler 



at middle but always more black than pale 3 



Antennal segment ii chiefly pale, blackish only at base 20 



3. Cuneus with blackish, entirely black or blackish only at apex, never 



chiefly brown 4 



Cuneus pale, or uniformly fulvous to dark brown, sometimes dusky 

 at apex but never distinctly black 15 



4. Cuneus more or- less pale at base 5 



Cuneus uniformly black like the cerium, rarely somewhat pale at 



the fracture 10 



5. Scutellum uniformly black 8 



Scutellum with pale, sometimes pale only on apex or along lateral 



margins 6 



6. Scutellum pale along median line, sometimes pale only at apex, or 



broadly pale and leaving only the basal angles blackish 7 



Scutellum black along median line, thus leaving lateral margins 

 more or less pale _ (p. 438) obscurus 



7. Femora pale to fulvous, hind pair with two rows of prominent 



black spots, sometimes becoming obscured with darker but never 

 distinctly blackish at base and with paler at middle; cuneus pale 



at base and along outer margin ; length 3.9-4.5 mm 



(p. 440) flavoscutellatus n. sp. 

 Femora pale to black, usually blackish at base and paler on middle, 

 in dark specimens the femora black with only apices pale ; cuneus 



pale at base but not along outer margin ; length 3.8-4 mm 



(p. 434) pclitus var. flaveolus n. var. 



8. (5) Pronotum and hemelytra black, a small pale lunule at base of 



cuneus 9 



Pronotum pale apically, corium chiefly pale testaceous or ivory- 

 white, but with a large, somewhat ovate, fuscous spot on apical 

 half; cuneus pale, with a small black spot at apex (p. 439) fratemus 



9. Femora black, pale on apices ; pubescence white ; length 3.5 mm. 



(p. 434) politus 

 Femora yellowish, with one or two rows of black spots on anterior 



face ; pubescence yellowish to golden ; length 4 mm 



(p. 442) annulatus var. cuneatus n. var. 



10. (4) Rostrum and legs black or obscured with blackish 12 



Rostrum and legs chiefly yellowish, femora spotted, or spotted and 



marked with black lines 11 



11. Smaller, length 3-3.2 mm. ; femora with a few small black spots 



visible but never forming black line above or below ; hemelytra 

 uniformly black, cuneus never pale at base . . (p. 453) repetitus n. sp. 

 Larger, length 3.8-4.5 mm. ; hind femora with four or five black 

 spots on apical half of anterior aspect, a black line forming above 

 and one on ventral margin of apical half (p. 442) annulatus 



12. Femora black except on extreme tips, tibiae pale but with prominent 



black spots 13 



Femora, tibiae, and antennae obscured with brownish black ; anten- 

 nal segment iii dusky to fuscous, scarcely paler than segment ii; 



