37 



There are apparently two broods of this insect, eggs being laid 

 in early spring upon the young beets and the adult appearing in June 

 or July, when the second brood eggs are laid. The larvse of the second 

 brood develop and become full grown in the fall, and probably most 

 of the adults emerge at this time, although two of the larva? taken last 

 October are still (April 1 ) in that stage in our breeding cages. It may 

 be that in southern California the adult emerges in the fall and lays 

 eggs on some native food plant. Adults were quite common in that 

 region in late September, especially in the early evening before dark. 

 They would fly quickly when disturbed, but only for short distances, 

 and usually alighted on the under side of beet leaves or on the ground, 

 the color of which they closely resemble. Some minute Avhite eggs 

 were found at the bases of leaves of beets, which may belong to this 

 species or to the tortricid mentioned below. 



This moth has a wide distribution, having been taken in many 

 parts of the United 

 States. Specimens in the 

 National Museum bear 

 labels from the follow- 

 ing localities: Maine 

 (Packard) ; Massachu- 

 setts; New York (Bur- 

 nett) ; Angiesa, N. J., 

 June 23 (Kearfoot) ; 

 Hastings, Fla., April 

 (Kearfoot) ; Wisconsin; 

 Stockton, Utah, numer- 

 ous specimens, dates, 

 June 24, 29, August 4, 6, 

 7, 8, 11, 23, and Septem- 

 ber 1, 8, 11 (Tom Spald- 

 ing) ; Denver, Colo., May 

 1, 15, and September 15; 

 Pueblo, Colo., July 

 (Kearfoot) ; Pullman, 

 Wash. (Piper); Kaslo, British Columbia (Dyar & Caudell) ; San 

 Francisco, Santa Clara, and Alameda, Cal. (Koebele) ; Williams, 

 Ariz., July 7, 10, 23 (Schwarz & Barber) ; Flagstafi', Ariz., July 8, 

 24 (Barber); Sapello Canyon, N. Mex. (Oslar). The species was 

 described by Clemens^ under the genus Nephopteryx in 1860 from 

 specimens " From Dr. Charles Girard, Washington, D. C, Pennsjd- 

 vania, Canada, and Massachusetts." 



The statement that the insect was reared from elm, which has 



ftg. n. 



-Upper portiou of beet injured by Hulstea 

 undtdatella (original). 



o 1860 : Clemens, Proc. Acad. Nat. Sc. Phila., p. 205. 



