22 



IOWA STUDIES IN NATURAL HISTORY 



Genus PROTEIDES Hiibner 

 Proteides Hbn., Verz. bek. Schmett. 104, 1820. Type Papilio 



idas Cr. 

 Dicranaspes Mab., Ann. Soc. Ent. Belg. xxi, 24, 1878. Type 



Papilio idas Cramer. 

 Proteides is very close to Epargyreus, and I think that with a 

 large series of the tropical species the two genera will be found 

 to be scarcely worthy of separation. In our fauna, however, the 

 sharply constricted and reflexed apiculus and the narrow, apic- 

 ally produced primaries of Proteides are very distinctive. The 

 male has no costal fold. Fig. 5. 



1. PROTEIDES IDAS 



Papilio idas Cramer, Pap. Exot. in, 118, p. cclix, A, B, 1779-80. 

 Papilio mercurius Fab., Mant. Ins. n, 86, 1787. 

 Biol. Cent. -Am., Ehop. II, 301, pi. 77, f. 5, gen., 1893. 

 Skinner, Trans. Am. Ent. Soc. xxxvn, 194, 1911. 



Occurs in Texas, New Mexico and Arizona. I have no further data. 



Genus EPARGYREUS Hiibner 

 Epargyreus Hiibner, Verz. bek. Schmett. 105, 1820. Type Pa- 

 pilio tityrus Fab. 

 Second joint of palpi closely appressed, densely clothed with 

 scales in which the small third joint is almost concealed. An- 

 tennae about one-half as long as the 

 primaries, club more or less sharply 

 curved at the middle. Head not quite 

 as wide as thorax. Primaries elong- 

 ate, rather narrow ; outer and inner 

 margins about equal in length, outer 

 slightly more oblique but otherwise 

 similar to Goniurus. Costal fold pres- 

 ent. Cell three-quarters as long as 

 wing ; vein 5 slightly nearer to 4 than 

 to 6. Recurrent vein nearer to vein 

 3. Vein 1 strongly sinuate. Secon- 

 daries rounded, lobed at anal angle. 

 Fig. 5. 



The primaries are longer and nar- 

 rower in exadeus than in zestos and tityrus, and the apiculus of 



Fig. 5. a. Club of antenna of E. 



zestos Greyer, b. Club of antenna 



of P. idas Cramer, c. Neuration 



of E. tityrus Fab. 



