650 



THE PANORPOID COMPLEX, 111., 



Table III. 



Table of the Principal Venational Characters for the Families of the 



homoneura. 



o 



P3 



(1) 

 (2) 

 (3) 

 (4) 



Character. 



■•> ^ is* *> 



■2 Lo sa 



^ 



A. Present in both wings. 

 C. Absent in both wings. 



-A. Present in both wings. 

 C. Absent in both wings. 



B. Present in 



B. Present in 



Forking of Sc- 

 f ore wing only. 



Forking of Ri : 

 forewing only. 



Number of branches of Rs : — A. Four in both wings. B 

 Four in forewing, three in hind. C. Three in both wings 



Manner of branching of Es : — A. Dichotomic. B. Other 

 wise. 



(5) Closing of radial cell distally by ir : — A. Present. 

 B. Absent. 



A or 

 B. 



B or 

 C. 



A. 

 A. 

 A. 



(6) 

 (7) 



(8) 



(9) 

 (10) 



(11) 

 (12) 

 (13) 



(14) 



(15) 

 (16) 

 (17) 



(18) 



(19) 



(20) 



Positions of rf and mf : — A. Both normal. B. mf nor 

 mal, rf removed distad. C. Both removed distad. 



Number of branches of Mi— 4 : — A. Four; M 4 oblique and 

 fused distally with Cuia. B. Apparently only three, 

 M 4 being reduced to a short transverse vein. 



Cubito-median Y-vein :- 

 or absent. 



-A. Well developed. B. Reduced 



Closing of median cell distally by ini : — A. Present. 

 B. Absent. 



Number of branches of Cu: — A. Three, all complete. 

 B. Three, but Cu-2 reduced in one or both wings. 



Cubito-anal Y-vein in hindwing : — A. Complete. 



B. Absent. 



Anal veins: — A. All three present. B. 3A absent. 



C. Only one complete anal present. 



Anal Y-vein of forewing: — A. Double Y complete. 

 B. Single Y complete. C. Single Y reduced. 



Humeral veinlet hm : — A. Present in both wings. 

 B. Present in forewing only. C. Absent in both wings. 



Cross-vein sc-r : — A. Present in both wings. B. Present 

 in one wing only. C. Absent. 



Cross-vein r-m : — A. Present in both wings. 



Cross-vein cu-a in forewing : — A. Present. B. Absent. 



Cross-vein ia\ : — A. Present in both wings. B. Present 

 in hindwing only. C. Absent from both wings. 



Cross- veins sa in forewing and iaz in hindwing: — A. Both 

 present. B. Only ia% present. C. Both absent. 



Shape of wing: — A. Original elongate form, as in Bel- 

 mont ia or Rhyacophila. B. Symmetrical, sharply point 

 ed wing. C. "With narrow base and broad termen. 



Percentage of archetypic characters present*. 



Jugo-frenata 



£ ^ « 



< 



B. 



A. 

 B. 

 A. 

 A. 



A. 



A or 

 B 



B or 



C 



A or 

 B 



A 



A or 

 B 



A or 

 B. 



B. 

 B. 



5 2 



*l 



B or 

 C. 



A or 

 B. 



B or 

 C. 



B. 

 B. 



C. 



B. 



A. 

 B. 

 A. 

 A. 



A or 

 B 



A or 

 B. 



C. 



A. 



A. 



B. 



A or 

 B 



C. 



c. 



c. 



B. 

 B. 



C. 



B. 



B. 



R. 



Jugrata 





■^ 

 ^ 



B or 

 C. 



C. 

 A. 

 A. 

 B. 



A. 



A. 

 A. 





B. B. 



B. 



A or 

 B. 



C. 



C. 



B. 

 A. 

 A. 



C. 



C. 



B. 



72-5 62-5 17-5 60-0 37-5 



A. 



B. 



C. 



A. 



C. 



A. 



A. 



B or 

 C. 



C. 



c. 



*In calculating these percentages, an archaic character present in one wing only, 

 as (2), (3), B, etc., is aUowed for as one-half the complete archaic character. 



