THE CANADIAN ENTOMOLOGIST 189 



known to cause considerable commercial loss in onion plantations in the '''dry 

 belt" of the Province. First generation larvae developing from eggs laid by 

 overwintering specimens become first apparent in early June in the Okanagan 

 Valley. This species also occurs on Vancouver Island. 



Haplothrips statices HaU 



This species has been beaten from the branches and foliage of cultivated 

 apple and plum trees, Spircea discolor, and other native shrubs at Victoria on 

 Vancouver Island and at Vernon, B.C. It appears to be the commonest species 

 infesting the flower heads of clover, having been observed in great numbers in 

 such plants, both at Vernon and Penticton, B.C. This insect has been recorded 

 from many widefy separated points, including, on the west, Oregon and Cali- 

 fornia (8). From Montana (9) we receive information that this species has 

 been proven destruction to the set of red-clover seed. Judging from the num- 

 bers that this species occurs in the clover heads, particularfV in the '''dry belts" 

 of the Province of British Columbia, it is possible that some injur>^ not as yet 

 proven, may be caused. 



Leptothrips mali Fitch. 



I am indebted to Mr. J. D. Hood for establishing the correct identit>^ of 

 both a nymph and an adult of this species. With this assistance I am able to 

 offer the following few additional notes on the habits of the species: 



A colony of twelve adults was taken clustering in the empty burrow of 

 some solitary burrowing hymenopteran in a dead twig of an Olivet cherry tree 

 at Okanagan Fails, B.C., on April 10, 1918. It was evident that these insects, 

 which were a few inches from the entrance of the burrow, had hibernated in 

 this position. They were observed first on splitting the twig lengthwise. 



On August 27, 1917, a group of 5 nymphs and 2 females of this species 

 were taken off the gummy exudation caused by the larva of Anarsia lineatella 

 on a peach tree at Penticton, B.C. They were apparently feeding on the 

 exudate. Specimens of individual adults have been taken at various times 

 during May, July and July off the foliage and branches of Acer glabruni, alder, 

 amelanchier, apple, peach and Crataegus, at points in the Okanagan Valley be- 

 tween Vernon and Vaseaux Lake, Lillocet, and near Victoria on Vancouver 

 Island. 



As recorded by Hood (8) this species is widespread in its distribution and 

 common "from early spring to late fall." He states that for the most part this 

 species lives "singly on the leaves of various trees." This agrees entirely with 

 the majority of the records noted above. It is only necessary to add that, 

 apparently, adults cluster for hibernation purposes, and that nymphs may, at 

 times, be found closely assembled at one place. 



Chirothrips manicatus Hal, 



Males and females of this species occur commonly at the Coast, and in the 

 Interior of British Columbia on many roadside grasses. 



I wish in conclusion to thank Mr. J. D. Hood, of the United States Biological 

 Survey, for the assistance he has given me in this group of insects. Further- 

 more, my thanks are due to Mr. Warburton Young, of the Health of Animals 

 Branch, Dominion Experimental Farm, Agassiz, B.C., for his drawings of 

 jE. auricestus and J£. annectans. 



