516 



EosEWALL (0. W.). Wood-boring Beetles of Black Locust. — Ca^md. 

 ErUom., Lomlon, Out., lii, no. 9, September 1920, p. 203. 



The boring beetles reared from young black locust {Robinia 

 pseudacacia) in Louisiana include : the Bostrychid, Sinoxylon basilare, 

 Say ; the Buprestid, Agrilusegenus, Gory ; and the Cerambycids, Ecyrus 

 dasycerus, Say, Liopiis alpha, Say, L. fascicularis, Harr., L. variegatus, 

 Hald., Neoclytus erythrocephalus, F., and Pkyton jxillidmn. Say. 



Frost (C. A.) & Weiss (H. B.). A Bibliography of the Literature 

 on the described Transformations and Food Plants of North 

 American Species of Agrilus (Col.). — Canad. Entom., London, Ont., 

 lii, no. 9, September 1920, pp. 204-210. 



This first instalment inckides references to the literature on the 

 life-histories, habits and food-plants of thirty North American species 

 of Agrilus, those of special economic importance including A. rnficolUs, 

 F. (red-necked cane-borer), A. armatus, Say (oak twig-girdler), 

 A. vittaticollis, Rand (apple root borer), A. bilineatus, Web. (two-lined 

 chestnut borer), and A. anxius, Gory (bronze birch borer). • 



Waterston (J.). On a New Polyembryonic Encyrtid (Chalcidoidea) 

 Co'pidosoma tortricis, sp. n., bred from the Strawberry Tortrix 

 Moth. — Ann. App. Biol., Cambridge, vii, no. 1, September 1920, 

 pp. 1-5, 5 figs. 



Copidosoma tortricis, sp. n., here described, was reared in large num- 

 bers from larvae of Oxygrapha comariana. The remarkable appearance 

 of the irregularly swollen, dried skins of the hosts suggests a poly- 

 embryonic method of reproduction on the part of the parasite. It 

 was noted that as many as 35 of the parasites might emerge from one 

 larva. A practically identical form of Copidosoma has been reared 

 from a species of Tortrix in Italy, and found to be polyembryonic. 



Petherbridge (F. R.). The Life History of the Strawberry Tortrix,, 



Oxygrapha comariana (Zeller). — Ann. App. Biol., Cambridge, vii, 

 no. 1, September 1920, pp. 6-10, 1 plate. 



The strawberry tortrix, Oxygrapha comariana, caused serious damage 

 to strawberries from 1913-1917 in certain localities in England. The 

 caterpillars bind the leaflets with threads, so that their attack is easily 

 recognised ; the flowers are also attacked, with the result that the 

 fruit does not form or is distorted. There are two generations a year. 

 In a normal season the caterpillars are found from the beginning of 

 May to the middle of June, and again from mid-July to the beginning 

 of September. The pupal stage lasts from two to three weeks, and the 

 adult stage about four weeks in the first generation, and as late as 

 the third week in November in the second. The winter is passed in 

 the egg-stage. 



In 1918 both broods of caterpillars were severely parasitised by a 

 small Chalcid [Copidosoma tortricis, described above] ; a single pupa 

 was found containing a large Hymenopterous parasite, but this did 

 not mature. 



