No. 34-] HEMIPTERA OF CONNECTICUT: MIRIDAE. 427 



Arolia absent, or present but bristle-like in form (fig. 49: 25-32), 

 sometimes difficult to distinguish from hairs on tarsus ; pseud- 

 arolia absent, or present but small in size (fig. 49: 1-12) 2 



2. Prothorax simple, destitute of an apical stricture, sometimes with 



a flattened apical area suggesting a collar but not separated off 

 by a distinct incised line ; male genitalia distinctive, the tip of the 

 penis twisting to the left, lying closely within the bend of left 



clasper, extending downward and beyond it to the left side 



Phylinae, p. 428 

 Prothorax provided with an apical stricture, sometimes fine and 

 shallow, when apparent only at the sides an impressed line extends 

 back to rear of calli ; male genitalia not as the above 3 



3. Claws thick, either sharply bent (fig. 49: 21), or broadly curved 



(fig. 49: 27), or more sharply curved and cleft near base (fig. 



49: 28-32) 4 



Claws simple and slender, rarely widely spread (fig. 49: 25-26) ; 

 tibiae weakly spinose, long and tapering apically or else greatly 

 shortened ; in the latter case segment i of the tarsi is unusually 



long, the head transverse and eyes strongly protruding 



Cylapinae, p. 479 



4. Pronotum with annulif orm apical stricture 5 



Pronotum with an apical gibbosely convex area ; stricture apparent 



only at the sides from which an impressed line extends to rear 



of the calli Clivineminae, p. 480 



5. Hemelytra hyaline, glassy, ovate, with a sharply defined inverted 



Y-shaped red or fuscous mark (Hyaliodcs) 



DicYPHiNAE (pars) p. 476 

 Hemelytra not hyaline or glassy; claws usually cleft near base, 

 arolia bristle-like but pseudarolia absent Deraeocorinae, p. 481 



6. (i) Pseudarolia very prominent, obscure bristle-like arolia also 



present between claws at base (fig. 49 : 13-20, 22-24) 7 



decolor Fallen. (14) Macrotylus sexguttattis Frovancher. Phylinae, tribe 

 Hallodapini, Nos. 15-17. (15) Teleorhinus davisi Knight. (16) Orecto- 

 deriis obliquus Uhler. (17) Coquillettia mimetica Osborn. Dicyphinae, 

 Nos. 18-21. (18) Macrolophus separatus Uhler. (19) Dicyphus agilis 

 Uhler. (20) Dicyphus discrepans Knight. (20a) Dicyphus famelicus 

 Uhler. (21) Hyaliodes vitripennis Say. Bryocorinae, Nos. 22-24. ^^^) 

 Monalocoris filicis Linnaeus. (23) Pycnoderes dilatatiis Reuter. (24) 

 Sixeonotus insignis Reuter. Cylapinae, Nos. 25-26. (25) Cylapus tenui- 

 cornis Say. (26) Fulvius brunneus Provancher. Clivineminae, No. 27. 

 (27) Largidea davisi Knight, — claws and hind tarsus. Deraeocorinae, 

 Nos. 28-32. (28) Deraeocoris pinicola Knight. (29) Deraeocoris nebulosus 

 Uhler. (30) Deraeocoris ruber Linnaeus. (31) Eurychilopterella luridula 

 Reuter. (32) Eustictus venatorius Van Duzee. Orthotylinae, Nos. 33-54- 

 (33) Labops hirtus Knight. (34) Semium hirtuvi Reuter. (35) Partheni- 

 cus vaccini Van Duzee. (36) Halticus citri Ashmead. (37) Halticus 

 intermedins Uhler. (38) Strongylocoris stygicus Say. (39) Orthocephalus 

 mutabilis Fallen. (40) Sericophanes heidemanni Poppius. (41) Alepidia 

 gracilis Vhltr. (42) Pilophorus amoenus Uhler. (43) Pseudoxenetus scutel- 

 latus Uhler. (44) Ceratocapsus modestus Uhler. (45) Lopidea robiniae 

 Uhler, (46) Hadronemaniilitaris Uhler. (47) I Inacoramalina Uhler. (48) 

 Orthotylus flavosparsus Sahlberg. (49) Orthotylus catulus Van Duzee. 

 (50) Orthotylus dorsalis Provancher. (51) Heterocordyliis malinus Reuter. 

 (52) Mecomma gilvipes Stal. (53) Reuteria irrorata Say. (54) Diaph- 

 nidia pellucida Uhler. Mirinae, Nos. 55-56. (55) Pithanus maerkeli 

 Herrich-Schaeffer. (56) Stenodema trispinosum Reuter. Capsinae, Nos. 

 57-60. (57) Barberiella apicalis Knight. (58) Platytylellus insitivus Say. 

 (59) Phytocoris lasiomerus Reuter. (60) Lygus vanduzeei Knight. 

 Drawing by Dr. H. H. Knight. 



