INSECTS INJURIOUS TO CLOVER. 



371 



to attack the clover, and nearly or quite as mauy draw their sus- 

 tenance from our grasses. It is not probable tluit all this in- 

 crease is due to more close study and observation. Insects are 

 constantly leaving our wild plants, either from choice or neces- 

 sity, and adopting our cultivated plants as a more acceptable 

 diet. We are constantly introducing species from the old world, 

 some of which are of recent importation, and may well cause 

 solicitude because of the serious damage they do. Both of these 

 causes, change of food, habits and importation will continue to 

 increase these pests, so that constant study and experiment will 

 be necessary to ward off the threatening danger. 



Insects Injurious to Clover. — In the report of the New York 

 Agricultural Society for 1881-82, p. 190, Prof. J. A. Lintner 

 gives a list of insects which infest clover in Europe. There are 

 71 species. Nearly every genus rejiresented by these foreign 

 species is included in our insect fauna. The list is of much in- 

 terest to us, the more so as the noxious insects of Europe are 

 constantly being introduced into America. The following is the 

 list: 



Sitones flavescens Morsham. 



Sitones lineatus Linn. 



Phytonomus nigrorostris Fabr. 



P. meles var. trif olii Herbst. 



Tychius polylineatus Germ. 



ffychius pisirostris Fabr. 



Ceutorhynchus lineatus Payk. 



Apion seniculum Kirby. 



Apion virens Herbst. 



Apion flavipes. Fabr. 



Apion fagi Linn. 



Apion assimile Kirby. 



Apion trif olii Linn. 



Apion gracilipes Dietrich. 



Apion varipes Germ. 



Apion apricans Germ. 



Apion craccee 



Coccinella impuncta 



Hylesinus trif olii MiUl. 



Labidostomis longiniana Linn. 



Lycaena Amyntas Sehiffm. 



Lycsena Alexis Treits. 



Lycaena ^gon Sehiffm. 



Lycaena Cyllarus Fabr. 



Lycaena Dolus Hiibn. 



Lycaena Adonis Hiibn. 



Lycaena Argus. Hiibn. 



Melitaea Athalia Esp. 



Melitaja Cinxia 



Colias Hyale Linn. 



Leucophasis sinapis Linn. 



Zygfena Minos Hiibn, 



