1068 



WALTER H. WELLHOUSE 



Curculionidae 



crataegi Walsh, Conotra- 

 chelus (Quince cur- 

 culio) 



The square-shouldered 

 brown beetles of Cono- 

 trachelus crataegi were 

 found puncturing the 

 fruit of Crataegus for 

 feeding and oviposition 

 in July and August, 1918, 

 and in late May and June, 

 1919. The early months 

 of 1919 were much 

 warmer than those of 

 1918 at Ithaca, and this 

 probably is the cause of 

 the great variation in the 

 time of their appearance. 

 The larvae develop within 

 the haws, feeding on the 

 pulp surrounding the 

 large, stony seeds. A 

 larva commonly eats 

 about one-half of the en- 

 tire pulp of the fruit 

 before emerging in the 



autumn, when it leaves the fruit by a large, round, exit hole. It then 

 burrows down two or three inches in the soil and spends the winter as 

 a larva curled in a smooth-walled earthen cell. In June, 1918, the writer 

 found ninety-six larvae in the soil beneath one Crataegus punctata tree. 

 Some of them pupated in June and others in July. They are very common 

 on all the, native hawthorns. 



nebulosus Lee., Anthonomus (Hawthorn blossom weevil) 



One of the most interesting and injurious of the insects found on the 

 hawthorns is Anthonomus nebulosus, a member of a very destructive genus 

 of blossom weevils. Its mode of life resembles in a general way that of 

 the Mexican cotton boll weevil, A. grandis, and is almost identical with 

 that of the European apple-blossom weevil, A. pomorum (Theobald, 1909: 

 104-110). 



The original description of A . nebulosus is to be found in the Proceedings 

 of the American Philosophical Society (Leconte, 1876), and a more com- 

 plete description is given by Dietz (1891). In the present account it is 



FlG. 110. FEEDING PUNCTURES OF XANTHONIA VILLOSULA 

 IN LEAVES OF CRATAEGUS PUNCTATA 



