219 



Sacharov (N.). HtCKO/lbKO flaHHblX"b Hl» 6ionoriM Orgyia dubia, 

 Tausch. [Some data on the biology of Orgyia dubia, Tausch.] 

 Reprint from Revue Russe d' Entomologie, Petrograd, xiv, no. 4, 



1914, 7 pp., 2 figs. 



Orgyia dubia is common in the government of Astrachan and 

 in other parts of South-Eastern Russia. The caterpillars breed 

 on wild plants, mostly on wormwood in the steppes and also on Alhagi 

 camelorum, Fisch. [camel thorn] and some other plants. They do not 

 harm cultivated plants, but in case of outbreaks, as in 1911-12, they 

 may be injurious to fodder grasses. The importance of these insects, 

 according to Portchinsky, consists in the fact that in their eggs the 

 larvae of parasites of Cydia ponionella are able to winter. Even in 

 outbreak years, it was difficult to find the imago in the open, the 

 reason being that the number of males is very small and that the 

 females conceal themselves. The marked sexual differences of this 

 moth are described. The females never leave their cocoons, and the 

 young caterpillars, which hatch in 10-12 days, remain inside the 

 cocoons until they have devoured the remains of their parent. 

 Three generations occur in Astrachan and there is some difference 

 in the size and form of the summer and autumn caterpillars. Some 

 parasites of the caterpillars occur, but they have not yet been 

 identified. 



ScHREiBER (A. F.). HeoSxoflMMOCTb yMpewAeHlfl aHTOMonornMecKOM 



CTaHUJM. [The necessity for establishing an Entomological Station 

 in Siberia.]— « Cll6MpCK0e CeJlbCKOe X03flMCTB0.» [Agriculture of 

 Siberia], Tomsk, no. 1, January 1915, pp. 17-18. 

 An Agricultural Congress which took place in Tomsk in the summer 

 of 1914 declared itself in favour of the establishment of an Entomo- 

 logical Station, and it is here pointed out that this question is very 

 urgent, owing to the development of agriculture in Siberia during the 

 last 15 or 20 years. It is urged that the work of the Station 

 should cover both West and East Siberia and that, besides the study 

 and control of various insect pests, it must also deal with other 

 Arthropoda affecting animals. 



Sacharov (N.). BpenHbifl HactKOMbifl, HaOnwAaeMbm Bi* AcipaxaH- 

 CKOM ry6. ci, 1912 no 1914 roA-b. Ktj oTHeiy ciaHuiM 3a 1914 

 rOA"b. [The injurious insects, noticed in the govt, of Astrachan 

 from 1912 to 1914. From the report of the Station for 1914.] 

 Published by the Entomological Station of Astrachan, Astrachan, 



1915, 29 pp. 



A list is given of insect pests observed in Astrachan during the 

 last three years ; many of these have already been dealt with in this 

 Review, they include : — 



Arachnoidea -.—Eriophyes pyri, Pagst., on leaves of pear and 

 apple trees ; E. vitis, Land., on vines ; Tetramjchus telarius, L., on 

 cucumbers, melons, pumpkins, etc., and two species of Tetranychns 

 which injure Crimean quinces, while the local variety does not suffer 

 from them. Tyroglyjjhus (Aleurobius) farinae, Koch, attacks stored 

 mustard. 



(C150) a2 



