271 

 REVIEW OF ENTOMOLOGICAL LITERATURE. 



By Jacob Kotinsky. 



"The Sugar Cane Leaf-Roller (O mi odes accepta) with an Ac 

 count of Allied Species and Natural Enemies." By Otto H 

 Swezey. Bull. V, Division Entomology, H. S. P. A. Ex])erime:it 

 Station. 8°. 6t pp., VI pits., 3 text figs. 



To the habitual reader of entomological literature a paper 

 by Mr. Swezey is always a treat. It is always replete with use- 

 ful and interesting information, systematically arranged and read- 

 able alike to the veteran and novice. The present bulletin, be- 

 cause it treats of insects affecting sugar cane, was written pri- 

 marily for the growlers of that plant. But it contains also so 

 much information on insects affecting other plants, especially ovv 

 notorious cocoanut leaf-roller, that it is well worth the perusal 

 of many of us. Besides, the sugar cane leaf-roller feeds on grasses 

 also. 



In this bulletin the author describes, figures and gives the life 

 histories of all (15) Hawaiian species of the genus OmiodeT. 

 **They are all native to the Hawaiian Islands and' occur nowhere 

 else," he tells us. One of these (O. nicyricki) he descril)es as 

 new to science. The tables for the determination of adults an 1 

 caterpillars and their parasites will prove extremelv useful to the 

 future student of these insects. 



A brief chapter is devoted to remedies, and it is interesting to 

 uote that this is followed by one of 20 pages and 2 plates on 

 natural enemies wherein descriptions, habits and figures of 13 

 species of parasites and predators are given. In the introductory 

 paragraph the author says: (p. 37) "Since so many (of the pests) 

 are killed by parasites, and yet there are enough left to do consider- 

 able injury at times, one can not help but wonder to what extent 

 these pests might increase were there no parasites preying on them, 

 and how many times more serious would be the damage done by 

 them. The extreme difficulty and impracticability of treating 

 sugar cane fields, or large palm trees, artificially, for the destru':- 

 tion of these pests, makes it all the more important that there are 

 so many valuable parasites preying upon them ; and shows the 

 value of introducing natural enemies to control a pest, for the 

 four best parasites of these leaf-rollers are introduced species 

 ", of these 4 species 3 are definitely known to have been 



