THE OTTAWA NATURALIST. 



Vol. XIII. OTTAWA, JUNE, 1899. No. 3. 



OTTAWA COLEOPTERxA.— CERAMBYCID^. 



By \V. Ha<-.ue HARRiN-orox, F.R.S.C. 



A list of one thousand Ottawa Coleoptera was published 

 in Transactions, Vol. II, pp. 67-85, 1884, but the number of 

 apecies now known is probably nearly 50 per cent greater. The 

 majority of the additions, however, have been of small or in- 

 conspicuous beetles, or of those belonging to groups which 

 require special methods of collecting. In view of the more 

 extended knowledge of our fauna, it is proposed to offer from 

 time to time lists of the families which appear to be most fully 

 determined. The Cerambycidse have been selected for the first 

 paper of the series, as in the fifteen years which have elapsed 

 but few changes or additions have been made ; the number has 

 only increased from 106 to 113, and but few additional species 

 are likely to be found here. 



The Cerambycida3, or Longicorn Beetles, are always favorites 

 with Coleopterists as they vary remarkably in size, structure 

 and ornamentation, and include many very beautiful insects. 

 Our species do not equal cither in size or decoration those of 

 more tropical climates, nor even such beetles as Ergates spiculatus 

 Lee. and Rosalia fiinebris Mots, which occur in British Columbia, 

 but we have still some large and handsome forms. The 

 Cerambycids are also of special interest from the fact that, in 

 the larval stage, they subsist invariably upon the woody tissues 

 of plants, and that many of the species arc, therefore, included 

 among injurious insects. These, however, arc such as attack the 

 trees and shrubs of which man desires to appropriate to his own 

 uses the fruit or other products, or which he plants for shade or 

 ornament. Apart from such economic considerations, the work 

 performed by these wood-eating insects contributes largely to 





-3' 

 c. 



