174 ECONOMIC ENTOMOLOGY 



CC. Frenulum absent. 



D. Cubitus of both wings apparently 4-branched. 



Hind wings with humeral veins. — LasiocampidcB (Tent- 

 caterpillar Moths), p. 203. 

 DD. Cubitus of both wings apparently 3-b ranched; tongue 

 absent; tibia without spurs. — Saturniina (Silkworm Moths), 

 p. 179. 

 BB. Hind wings with usually three complete anal veins. (2 to 4 anal veins 

 in hind wings of ^geriidae). 

 C. Wings transparent; free from scales; fore wings narrow. — 

 MgeriidcB (Clear-winged Moths), p. 216. 

 CC. Small moths; wings covered with scales. — (Microlepidoptera). 

 D. Subcosta and radius of hind wings fused or approximate. 

 — Pyraliditia (Pyralids), p. 207. 

 DD. Subcosta and radius of hind wings far apart. 



E. Second anal vein of hind wings forked at base. — ■ 

 Tortricina (Tortricids), p. 218. 

 EE. Second anal vein of hind wings not forked at base. — 

 Tineina (Tineids), p. 236. 

 CCC. Large or medium-sized moths; wings usually covered with 

 scales. — {Macrolepidoptera in part). 

 D. Anal veins of fore wings partially fused; hind wings some- 

 times with two anal veins. — Psychida (Bag-worms), p. 207. 

 DD. Anal veins of fore wings not fused. — Cossida (Carpenter 

 Moths), p. 237. 



Note. — -The Geometrina includes the following families: Ennomidse, Geometridse, 

 Hydriomenidae, Sterrhidae and Monocteniidse. 



The Pyralidina includes the Pyraustidae, Pyralididae, Galeriidae, Crambidae, 

 Phycitidae, Pterophoridae and Orneodidse. 



The Tortricina includes the Eucosmidas, Conchylidas and Tortricidae. 



The Tineina includes Tineidae, Yponomentidae, Plutellidae, Gelechiidae, Hap- 

 loptiliidae, Lyonetiidae, Nepticulidae, Tischeriidae, Gracilariidae. (Consult Com- 

 stock's Manual and Barnes and McDunnough's Checklist of Lepidoptera.) 



PAPILIONID^ 



These butterflies are called "Swallow'- tails" and are readily recog- 

 nized. The more common forms are the Tiger Swallow-tail (Fapilio 

 turnus, two forms), the Zebra Swallow-tail {Papilio ajax, three forms), 

 the Green-clouded Swallow-tail {Fapilio troilus) and the Black Swallow- 

 tail {Papilio polyxenes) which feeds on celery and other members of the 

 carrot family. 



Black Swallow-tail {Papilio polyxenes Fab.). 



Adult. — Wings black with two transverse rows of yellow spots on the 

 hind wings; between the rows of yellow spots are several flashes of blue. 

 Two broods, May and July. Wing expanse 3-4 inches. 



