458 REPORT OF NEW JERSEY STATE MUSEUM. 



NEPHELODES Gn. 



N. minians Gn. Throughout the State VIII, IX, often on golden rod; the 

 larva is sometimes locally injurious as a cut-worm on corn and other 

 grasses. The variety "violans" Gn. is locally more common than the 

 type form. 



LEUCANIA Ochs. 



The larvae of all the species of this genus feed on grasses and a num- 

 ber of them are injurious. 



L. pseudargyria Gn. Throughout the State IV-IX; common but not in- 

 jurious. 



L. luteopallens Sm. (pallens L.) Ramsey IX, 21 (Sleight); Newark VII 

 (Wdt); Elizabeth VIII, 4 (Bz). 



L. albilinea Hbn. Common throughout the 

 State V-IX; the larva is known as the 

 "wheat-head" army worm; attacking 

 the grain just as it is ripening and 

 sometimes causing serious trouble in 

 the more northern parts of the State. 



L. diffusa Wlk. Paterson V, 20 (Gr) ; Eliz- 

 abeth VII, VIII (Bz); 5-mile beach VIII, 

 20 (Haim); has been confused with the Fig. 188. The "wheat-head" army 

 preceding and probably has much the worm, Leucania albilinea. 

 same distribution. 



L. ligata Grt. Manumuskin V, 5 (Dke). 



L. flabilis Grt. Newark at light, VII (Wdt); Elizabeth IX, 15 (Bz) ; 5- 

 mile beach VII, 25-VIII, 5 (Haim) ; always rare. 



L. insueta Gn. Hopatcong (Pm) ; Jersey City VI, common (Kr) ; prob- 

 ably occurs throughout the State. 



L. extincta Gn. Newark (Ang) ; Elizabeth V, VII (Bz) ; 5-mile beach 

 VIII, 12 (Haim). 



L. multilinea Walk. Newark meadows, at sugar (Sb); Elizabeth VI, 

 VIII (Bz); Staten Island VI-IX (Ds) ; 5-mile beach VIII, 27 (Haim). 



L. commoides Gn. New Brunswick (Coll); Anglesea VIII, IX (div). 

 L. phragmatidicola Gn. Throughout the State V, IX; usually common. 



L. unipuncta Haw. Throughout the State from May until frost. The 

 larva is the "army-worm," which is seasonally and locally destruc- 

 tive. Remedial measures consist of barriers and mechanical meth- 

 ods adapted in each instance to the case in hand. 



Fig. 189. Mamestra picta: a, the "zebra caterpillar;" b, moth. 



Fig. 190. "Wheat head" army worm: a, a, larvse at work on wheat head; b, egg mass; 

 c, d, egg from above and side, enlarged. 

 Fig. 191. Army worm at work. 

 Fig. 192. Army worm moth, Leucania unipuncta and details. 



Fig. 193. Heliothis armiger: a, b, egg enlarged, from side and above; c, larva; d, pupa 

 in underground cell; c, adult, wings spread; f, same, wings closed. 



