290 



Troop (J.). Report of the Entomological Department. — Tiventy-seventh 

 Ann. Rept. for the year ending 30th June 1914, Purdue Univ. 

 Agric. Expt. Sta., Lafayette, Ind., January 1915, pp. 48-49. 

 [Received 1st March 1915.] 



Studies of the life-history of Cydia pomoneUa are being continued 

 with a view to determining the most suitable number of spray applica- 

 tions. This insect appears to be changing its working habits. The 

 Hessian fly, Mayetiola destructor, has been very destructive, and in 

 some places the wheat crop was practically ruined by it. This is 

 usually due to lack of general knowledge concerning this pest, and 

 suitable bulletins were sent out. The army worm, Cirphis unipuncta, 

 did considerable damage to growing crops in various sections before 

 it could be checked. The chinch bug, Blissus leucopferus, was very 

 destructive in some of the counties. The damage done bv this species 

 is estimated at from $50,000,000 to $75,000,000 per annum in the 

 United States, while the figure of $100,000,000 may be reached in 

 years of great prevalence. The clover leaf-beetle did more damage 

 during 1914 than for many years, especially on young lucerne fields. 

 Several species of leaf-hoppers and many other insects have been 

 found on lucerne. By sweeping the young lucerne with a net, as many 

 as 25 different species were caught. 



Tragardh (Ivar). Bidrag till kannedomen on tallens och granens 

 fiemder bland smaf jarilarne. [Contributions towards the knowledge 

 of the injurious Microlepidoptera of the fir and spruce.] — Skogs- 

 vdrdsforeningens Tidskrift, Stockholm, 1915, 60 pp., 49 text figs. 



Dioryctria schutzeella, Fuchs., described from Saxony in 1899, was 

 found in the middle of June on spruce in the vicinity of Stockholm. 

 The moth appears in the middle of July. The larva is red-brown 

 with a black head, yellow prothoracic and anal shield and two 

 darker longitudinal streaks. It attacks the needles of the young shoots. 

 Tortrix {Pandemis) ribeana, Hb., is said to be a very polyphagous 

 species, but has previously been recorded only once from the spruce, 

 by Wachtl. The full-grown larvae were observed in the middle of 

 June on young spruces at the Experimental Station. They attack the 

 young shoots generally on one side and devour the needles and often 

 damage the bark also, so that the shoots become deformed. Generally, 

 the shoots on the side branches are attacked, but even terminal shoots. 

 are occasionally injured. The larva is green, with lighter coloured 

 ventral side and lighter hair spots. The head is yellow with darker 

 patches, and the prothoracic shield has also dark markings. 



Eucosma {Grajjholitha, Epiblema) tedella, CI. In 1867, Holmgren 

 considered this species to be one of the most dangerous micro- 

 lepidopterous pests of the spruce, but subsequent information has not 

 supported his view, injury caused by this moth having been recorded 

 only once, in 1891, at Badsbo. It is therefore suggested that this- 

 moth was held responsible for injuries caused by other unidentified 

 species. In the vicinity of Stockholm the moth appears at midsummer, 

 and in the middle of August single mined needles can be observed. 

 In 1914, they were noticed as late as November. The mined needles 



