Twelfth Report of the State Entomologist 251 



recently issued ones. Their abundance noted by him the latter part of 

 the month is possibly due to the appearance of individuals of the second 

 brood. The beetles feed, like the more common species, on the foliage. 

 They will also feed on the berries, in confinement, at least. This insect 

 is more ready to take to flight and is less apt to hide behind the stems 

 when disturbed, than is its congener. 



Introduction and Distribution. 



This is another addition to the list of insect pests accidentally intro- 

 duced into this country from Europe. It was discovered in i88r in the 

 vicinity of Baltimore, Md., by Dr. Otto Lugger. The insect was quite 

 abundant when found, showing that the date of its introduction was 

 probably several years earlier. 



Assuming Baltimore or its vicinity as the place of introduction, the 

 spread of the insect maybe traced southward across several counties and 

 into the District of Columbia, where it was detected in 1896. Later it 

 invaded Virginia in the vicinity of Washington, and now it has been 

 detected as far south as Westmoreland county of that State. In 1892 

 it was found in Gloucester county, N. J. When spreading from Mary- 

 land to New Jersey, it also established itself in northern Delaware. The 

 next year its presence was announced in the adjoining counties of Cum- 

 berland and Camden, N. J. The progress of the insect over New Jersey 

 has been so rapid that in 1897, Dr. Smith found the insect in Monmouth 

 county, nearly as far north as Staten Island. It has also established 

 itself in parts of Pennsylvania near the southern portion of New Jersey, 

 having been found there in 1894. The same year it was received by me 

 from Monroe county, N. Y. 



The known distribution of this insect is about as follows : The north- 

 eastern portion of Virginia along the Potomac and Chesapeake bay, the 

 District of Columbia, Maryland, the northern portion of Delaware, the 

 southeastern part of Pennsylvania, New Jersey as far north as Monmouth 

 county, at least, and a colony in the vicinity of Rochester, Monroe 

 county, N. Y. It will probably spread over a considerable area in the 

 central portion of the State, and it may be expected to enter both Staten 

 and Long Island in the near future, from its northern extension in New 

 Jersey. 



Distribution of Crioceris asparagi. 



The distribution and spread of the common species will give some 

 idea of what may be expected of the twelve-spotted form. Crioceris 

 asparagi was first detected in this country in Queens county, Long 



