255 



the unhatched eggs will be in their most sensitive state and will also 

 be destroyed. Preparations should be made for treatment if any 

 eggs are seen, even though weather or natural enemies may prove 

 sufficient to check an outbreak. The destruction of returning migrants 

 and egg-laying individuals is considered impracticable owing to the 

 number of sprayings that would be necessary. Destruction of the 

 eggs in the dormant season cannot in the present state of knowledge 

 be relied upon, while treatment is difficult after the leaves have 

 unfolded owing to the shelter they afford to the Aphids. 



Weiss (H. B.). Some New Insect Enemies of Greenhouse and 

 Ornamental Plants in New Jersey. ^ — New Jersey Agric. Expt. Sta., 

 Neiv Brunswick, Circ. no. 100, 1st November 1918, 19 pp., 32 figs. 

 [Received 16th April 1919.] 



Neoborus amoenus, Reut. (ash leaf bug) has a wide distribution 

 in New Jersey, where it is found on white ash {Fraxinus americana), 

 green ash {F. lanceolata), red ash {F. pennsylvanica) and the English 

 ash {F. excelsior var. pendula). The eggs, laid on the underside of 

 young leaves, hatch in from 10 to 14 days and there are 5 nymphal 

 stages. Adults appear about mid- July and a second generation in the 

 latter part of August. Both adults and n}Tnphs feed on the underside 

 of the leaves, on which white spots appear, the foliage becoming 

 somewhat dry and curled. Apparently no attempts have been made 

 in New Jersey to control the species by insecticides. 



Leptohyrsa rJiododendri, Horv. {explanata, Heid.) (rhododendron lace 

 bug) occurs on Rhododendron n/mximum and mountain laurel {Kahnia 

 latifolia). There are probably two generations in New Jersey. Hiber- 

 nation occurs in the egg-stage, nymphs appearing in early May and 

 adults by mid- June. Eggs of the next generation are laid in June 

 and July, the second generation of adults appearing in August. 

 Mottling of the leaves is caused by the feeding of the nymphs and 

 adults. These may be controlled by a spray of 6 or 7 lb. whale-oil 

 soap to 50 U.S. gals, water, directed against the underside of the 

 leaves and applied as soon as the nymphs are noticed. 



A number of other recent nursery pests in New Jersey are also 

 mentioned [see this Review, Ser. A, v, pp. MO, 221, 238, etc.]. 



Headlee (T. J.). The Angoumois Grain Moth. — Neio Jersey Agric. 

 Expt. Sta., New Brunswick, Circ. no. 92, 20th October 1917, 3 pp., 

 1 fig. [Received 16th April 1919.] 



An account is given of the Angoumois grain moth [Sitotroga cerealella] 

 with its life-history, depredations, and the usual methods for its 

 destruction in stored grain, including fumigation, heat and removal of 

 moisture. 



Headlee (T. J.). The Bean Weevils. — New Jersey Agric. Expt. Sta., 

 New Brunswick, Circ. no. 91, 20th October 1917, 6 pp., 3 figs. 

 [Received 16th April 1919.] 



The bean Bruchids, Bruchus obtectus, Say, B. chinensis, L., B. quadri- 

 macidatus, F. and B. rufimanns, Boh., are briefly described and their 

 life-history is outlined. The usual remedial measures are advocated. 



