14 



A MANUAL OF DANGEROUS INSECTS. 



■)f Hypera meles Fabrieiiis (Phytononuis). 



(Austrian Alfalfa Leaf Weevil. Curculioiiidtx?; Coleoptera). 



Fig. l.— Chrotogonus trachypterus. An Indian pest of alfalfa. 

 (Maxwell-Lefroy.) 



Ho s t a : A 1 f a 1 f a , G rami- 

 naceaj. 



Injury: Defoliates. 



Biology: The larvae feed on 

 the foliage and spin silken 

 cocoons. 



Distribution: Europe, and 

 has been recently collected 

 in the United States. 



B. OTHER IMPORTANT 

 .4I.FALFA PESTS. 



COLLEMBOLA. 



.Smj nthuricla'. 



Smynthurus sp., a springtail, is 

 \cry injurious to alfalfa in New 

 South Wales, when abundant 

 skeletonizing the fields in moist 

 seasons. 



(A. Molineux, Agric. Gaz. N. S. 

 Wales, Nov., 1896, pp. 807-809. ) 



ORTHOPTERA. 



/Vcridiida'. 



Fig. 2.—Brachytrypes achatinus. An Indian pest of alfalfa. Chrotogonus- trachypterus Blan- 



(Maxwell-Lefroy.) chard, a destructive grasshop- 



per of India. (See text fig. 1.) 

 GrylIidnE>. 



Brachytrypes achatinus Stoll., a brown cricket of India. (See text fig. 2.) 



LEPIDOPTERA. 

 Xoctiiidae. 



Prodcnia litura Fabricius, also known as the Egyptian cotton worm, attacks alfalfa in India. 

 Plusia nigrisigna Walker, attacks fruit in India. 

 H< Chloridea obsoleta Hiibner, the cotton bolhvorm; ^Agrotis ypsilon Rott., the greasy cutworm; and 

 ■Je- Laphygma exigua Hiibner, serious pests already in the United States, attack alfalfa in India. 



Tortrifidse. 



Tortrix divulsana Walker, the lucerne moih of New 

 South Wales; spins the heads together and feeds on 

 them. 



COLEOPTERA. 



Coerliiellidae. 



Subcoccinella 24-punctata Linnwus; Europe; larva^ and 

 adults injure the foliage. 



Gerambycida'. 



t-Clytus floral is Pall.; Russia, imported to United States 

 in roots; root borer. (See text fig. 3 ) 



Curculionidse. 



t. Hypera punctata Fabricius, the clover-leaf weevil of 

 Europe, now common in the United States; also at- 

 tacks alfalfa. 

 ■ Hypera postica Gyllenlial, the alfalfa weevil of Europe, 

 introduced into western United States, and very in- 

 jurious. (See text fig. 4, a-f.) 

 Apion meliloti Kirby, a tiny weevil; Europe; breeds in the pith of the stems. 

 Apion tenue Kirby, .t tiny weevil; Europe; l)rceds in stems. 



ViG.Z.— Clyius floraUs. A Russian alfalfa 

 root borer. (Original, Walton.) 



