166 



which one of them attacked a dying larva of a species of Triphhps, 

 but it is thought that this species is usually phytophagous, consuming 

 animal food only in cases of necessity. The enemies of this thrips 

 include Triphleps niger and the larvae of Aeolothrips fasciatus, Hal. 

 There was only one generation of Haplothrips tritici, Kurd]"., in 1912. 

 Oviposition occurs on the ears of both summer and winter sown wheat ; 

 the larvae were also found on oats, but not on barley ; in two cases 

 heads of clover were found containing a great number of these larvae. 

 The development of the nymphs takes place at temperatures not lower 

 than 45-50° F., and not higher than 85° F. The larvae suffered from a 

 fungus disease caused by Botrytis hassiana, Bals., high temperature 

 and increased moisture being necessary for the development of the 

 fungus. The chief enemy of this species is Aeolothrips fasciatus, which, 

 according to Uzel, winters in the larval or egg stage. Both adults and 

 larvae of this predaceous thrips are found on various plants, and 

 the larvae have been found feeding on Aphis crataegi and A. rumicis 

 (euonymi), on Cecidomyid larvae, on eggs of Sciaphobus squalidus, 

 on larvae of Anthonomus pomorum, on larvae and nymphs of 

 Limothrips denticornis, Hal., on eggs of Cicadula sexnotata. Fall, and 

 DeltocepJuilus striatus, L., etc. In one case they were found inside a 

 cocoon of a species of Cionus sucking an egg of Hahrocytus cioni, 

 Thoms., which was deposited on the pupa of the beetle. The 

 larvae are also cannibals and their presence inside flowers of 

 lAnaria vulgaris (toad flax) tends to show that they are omnivorous. 

 The larvae of A. fasciatus were observed to weave cocoons, which 

 has not previously been recorded in the case of thrips, inside which 

 they pass the stages of pronymph and nymph. The duration of the 

 pronymphal and nymphal stages are equal, a fact which distinguishes 

 these insects from other Thysanoptera. A key is given to the 

 nymphal stages of this order, based on certain peculiarities in their 

 structure. Two generations of A. fasciatus occurred, and it is thought 

 that they only winter as larvae, presumably after having prepared 

 a cocoon. 



Trubatchev (V. I.). nprnfl-feHCHie jiMSonfl B-b caflax"b. [The use o: 

 Lysol in orchards.]— « FlporpeCCllBHOe CaAOBOACTBO H OropoAHM- 



HeCTBO.» {Progressive. Horticulture and Market-Gardening], 

 Petrograd, xiii, no. 6, 20th February 1916, pp. 182. 



Lysol has been used with great success in the orchards in charge of 

 the author in Turkestan. A 4 per cent, solution is used in autumn 

 after the leaves have dropped and again in spring. A 2 per cent, 

 solution is effective against the curling of the leaves of pear trees, 

 against Cydia pomonella, and against Aphids. The spraying operations 

 against Cydia are started after the blossoming and repeated every 

 20-25 days up to the end of August. In order to make the solution 

 adherent, molasses may be added (| lb. of black or |- lb. of white to 

 each 3 gallons of the solution). Lysol is also useful when the soil is 

 rammed hard round the roots so that a space is formed by the move- 

 ments of the tree in the wind, down which the insecticide may be 

 poured. 



